Gear software updates - engineering changes, improvements, and software revision history

CPC Software Updates and Revision History

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The process of updating software has been greatly simplified. Now you can download only the files necessary to update your software.

Start by clicking on your software product's revision history in the list below. There you will find a Download the Update for... link to get the latest update. Don't click the download link for a different software package - each download is different and is specific to one software package.

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CPC update downloads consist only of the files necessary for an update. If you are a first time visitor and would like to download a complete software demo, please go to the Demo Download page.

Your activation key will continue to work on updates of the same software on the same computer. This way you always have immediate access to the latest software. Now that's painless.

The update process is described in How to Update Your Software

CPC Software Revisions Listed By Product:

CPC-24 - Straight Bevel Gear Shaper
CPC-2A/102 - Coniflex Straight Bevel Generator

CPC-26 - Spiral Bevel Generator
CPC-HOB - For All Gear Hobbing Machines

CPC-TMILL - For All Thread Milling Machines
CPC-RATIO - A Versatile Universal Gear Set Finder
CPC-FS - Fixed Setting Method for No. 116 Spiral Bevel Generator

CPC-BV4 - Coniflex Straight Bevel Gear Generator
CPC-BV1 - No. 16, 7A Spiral Bevel Gear Generator
CPC-HYP - Hypoid for Nos. 16, 116, and 26 Hypoid Bevel Gear Generator

Now here's the fine print.
A major product release (e.g., a Windows 32 version) will always require a new activation key, and will be priced according to whether you are upgrading or purchasing for the first time. Any major upgrade to a module can, at the discretion of Community PC, be deemed a new release and priced accordingly. Only simple revisions and corrections to existing products are provided free of charge. Also, charges may apply if software obtained through means other than download from this website. If you have any questions, please visit our FAQ page or

Module CPC-24 - Straight Bevel Gear Shaper

Download Update for CPC-24 How to Update Your Software

This setup module is for Gleason No. 12,14, & 24 Coniflex machines. These machines use two planer-style cutters having specified rack form pressure angle and point width. Setup includes Coniflex A & B dial settings for pattern control.

Change, Revisions and Bug Fix History: Updated 3/21/04

Event/Discovery
Date Description Severity Action Status/Date

8/19/06 Some Index gearsets were not reliably mounting at the machine. All Versions of CPC-24 should be updated with this fix. Index Calculations have been dropped in favor of an internal table. The new table mimics the standard 30/N table to assure workability at machine.
User input Index gear tables for last shaft and missing gear sizes are ignored and thus no longer necessary.
Additions made to F1 Help screens explain the changes and how to interpret the displayed change gears. Revised CPC-24 Module and posted to website
Version 1.21
08/19/06

6/09/05 Two issues were discovered.
(1) The index gear sets were using gears without regard to the list of missing sizes.
(2) The Cradle Roll gears were different for a miter gear set. Versions of CPC-24 prior to 06/28/05 should be updated. Coding changes are made to correct both problems. Revised CPC-24 Module and posted to website
Version 1.2
06/28/05

3/21/04 Calculation of Nc75 Ratio Roll gears sometimes failed to produce a workable gearset at machine. Improvements have been made in the software to more readily assure a good gear set. Versions of CPC-24 prior to 03/21/04 should be considered for this update. Additional validation checks have been added to Ratio Roll gear set finder code. Revised CPC-24 Module and posted to website
Version 1.2
03/21/04

7/01/03 Unable to set cradle roll gear set list or sum of teeth.
Cradle roll sum of teeth for No. 12 machine is 72, while sum of teeth is 90 for No. 24 & No. 14.
Also, machine cradle roll constant for No. 12 is .050, while constant is .032 for No. 24 & No. 14. Versions of CPC-24 prior to 07/01/03 should be considered for this update,
particularly if used for No. 12 machine. Added new machine data field for Sum of Teeth. This field can be edited at the
machine list. Cradle Roll gear set inventory is updated for No. 12 machine. Cradle Roll constant
default value is set to .050 for no. 12 machine. Revised CPC-24 Module and posted to website
Version 1.2
07/01/03

2/10/02 Company name and job Description not adequately handled.
Summary .txt file record should match printed summaries. Versions of CPC-24 prior to 02/10/02 should be considered for this update. Added user screen to input company and job description prior to saving summary.
A .txt file is saved for each summary in SUMMARY subdirectory. Summary .txt files are identified by setup ID number. Revised CPC-24 Module and posted to website
Version 1.2
02/10/02

2/02/02 Some Windows environments experience printing difficulties.
No way to target CPC-24 to either Microsoft Windows (32-bit) or MS-DOS (16-bit) platforms.
Escape key abruptly exits CPC-24 at main menu. Versions of CPC-24 prior to 02/02/02 should be considered for this update if experiencing print problems. Upgraded printing functionality to seamlessly use native Windows print management.
Creates C24SETUP.TXT file in home directory which contains last setup/summary printed.
Added Preference Screen to specify computer's Operating System and printer port selection.
Added "Quit CPC-24" prompt at main menu screen so that user can confirm exit before quitting CPC-24.
Updated Help for new user interface elements. Revised CPC-24 Module and posted to website
Version 1.2
02/02/02

6/13/99 Red screen error "variable Depth_Max cannot be found" when entering Tooling table. New table for tooling is created for each new machine, but field is omitted from table creation code. Occurs only when entering tooling. Tooling is optional for information only and doesn't affect summary creation. Changed tooling table creation code to include table field Depth_Max. Corrected CPC-24 Module and posted to website
Version 1.1
6/16/99

Event/Discovery Date	Description	Severity	Action	Status/Date
8/19/06	Some Index gearsets were not reliably mounting at the machine.	All Versions of CPC-24 should be updated with this fix.	Index Calculations have been dropped in favor of an internal table. The new table mimics the standard 30/N table to assure workability at machine. User input Index gear tables for last shaft and missing gear sizes are ignored and thus no longer necessary. Additions made to F1 Help screens explain the changes and how to interpret the displayed change gears.	Revised CPC-24 Module and posted to website Version 1.21 08/19/06
6/09/05	Two issues were discovered. (1) The index gear sets were using gears without regard to the list of missing sizes. (2) The Cradle Roll gears were different for a miter gear set.	Versions of CPC-24 prior to 06/28/05 should be updated.	Coding changes are made to correct both problems.	Revised CPC-24 Module and posted to website Version 1.2 06/28/05
3/21/04	Calculation of Nc75 Ratio Roll gears sometimes failed to produce a workable gearset at machine. Improvements have been made in the software to more readily assure a good gear set.	Versions of CPC-24 prior to 03/21/04 should be considered for this update.	Additional validation checks have been added to Ratio Roll gear set finder code.	Revised CPC-24 Module and posted to website Version 1.2 03/21/04
7/01/03	Unable to set cradle roll gear set list or sum of teeth. Cradle roll sum of teeth for No. 12 machine is 72, while sum of teeth is 90 for No. 24 & No. 14. Also, machine cradle roll constant for No. 12 is .050, while constant is .032 for No. 24 & No. 14.	Versions of CPC-24 prior to 07/01/03 should be considered for this update, particularly if used for No. 12 machine.	Added new machine data field for Sum of Teeth. This field can be edited at the machine list. Cradle Roll gear set inventory is updated for No. 12 machine. Cradle Roll constant default value is set to .050 for no. 12 machine.	Revised CPC-24 Module and posted to website Version 1.2 07/01/03
2/10/02	Company name and job Description not adequately handled. Summary .txt file record should match printed summaries.	Versions of CPC-24 prior to 02/10/02 should be considered for this update.	Added user screen to input company and job description prior to saving summary. A .txt file is saved for each summary in SUMMARY subdirectory. Summary .txt files are identified by setup ID number.	Revised CPC-24 Module and posted to website Version 1.2 02/10/02
2/02/02	Some Windows environments experience printing difficulties. No way to target CPC-24 to either Microsoft Windows (32-bit) or MS-DOS (16-bit) platforms. Escape key abruptly exits CPC-24 at main menu.	Versions of CPC-24 prior to 02/02/02 should be considered for this update if experiencing print problems.	Upgraded printing functionality to seamlessly use native Windows print management. Creates C24SETUP.TXT file in home directory which contains last setup/summary printed. Added Preference Screen to specify computer's Operating System and printer port selection. Added "Quit CPC-24" prompt at main menu screen so that user can confirm exit before quitting CPC-24. Updated Help for new user interface elements.	Revised CPC-24 Module and posted to website Version 1.2 02/02/02
6/13/99	Red screen error "variable Depth_Max cannot be found" when entering Tooling table. New table for tooling is created for each new machine, but field is omitted from table creation code.	Occurs only when entering tooling. Tooling is optional for information only and doesn't affect summary creation.	Changed tooling table creation code to include table field Depth_Max.	Corrected CPC-24 Module and posted to website Version 1.1 6/16/99

Download Update for CPC-24 How to Update Your Software

Module CPC-2A/102 - Coniflex Straight Bevel Generator

Download Update for CPC-2A/102 How to Update Your Software

This setup module is for Gleason No. 2A & 102 Coniflex machine. These machines use rotary milling-style cutters and are typically used to cut 10NDP or finer gears. Very productive, fast floor-to-floor times.

Change, Revisions and Bug Fix History: Updated 6/28/04

Event/Discovery
Date Description Severity Action Status/Date

07/10/07 (1) Pitch angle was not recalculated when addendum changed.
(2) Finding Profile Factor (Kp) from Swing Angle was hit or miss when matching to an existing summary. Kp should be added to output print and preview.
(3) Added Revised Method to Standard and Formate methods. This is expected to make matching an existing summary easier.
(4) Linkage Setting added to Generating Cam selection screen would make staying under 1.400 easier.
(5) Some settings between members were different in the case of miter sets. Versions of CPC-2A/102 prior to 07/30/07 should be updated. A lot of what was changed here has to do with making matches to existing summaries. Since there are many choices to be made while creating a summary, matching existing summaries is not so simple. Since matching has been expressed often in user comments, it seems a good idea to make matching an easier effort. Just remember that recreating a particular summary is NOT necessary to a successful summary. However matching builds confidence in the software and is a valuable way to learn the software. I regret to say that, until now, matching summaries was considered relatively unimportant.

Besides, while making changes for the purpose of matching, a number of real issues were uncovered.

(1) Pitch angle is recalculated for user changes in addendum or Whole Depth.
Also, maximum dedendum angle before undercut is now displayed.
(2) Standard Method only: Kp is recalculated when Swing Angle(s) are changed. Kp is also printed on the summary.
(3) Rather than incorporating all revisions into the one Standard method presented, changes not appearing in the original Standard (Book) Method have been extracted to the new Revised Method.
Standard Method now strictly follows the original documentation, while the Revised Method incorporates changes made by the OEM to the original method. To my knowledge, the documentation was never updated and distributed for these changes. It's not certain whether the Revised method is superior to the Standard, but it makes hand calculation easier. While not proven, there could be other justification in using the Revised method - but for now let's say it's just different. I would appreciate anyone's comments or experience in this area.
(4) Linkage setting was one of the last calculations made, but directly influences the choice of a generating cam. So linkage has been added to the Generating Cam selection screen.
(5) There's no reason for values and settings to vary between two miter members. It's possible for comparison's sake to force differences, but differences don't occur by default now. This issue has been corrected. Additional comments and hints are added to the Help facility.
Cutter Selections in the Formate Method are now in a separate window. Posted Version 1.1002 to website 07/30/07

12/21/06 New user had a number of questions and, while investigating, the help facility for the FORMATE method was found wanting.
Navigation and some input prompts were confusing as well (e.g. Cutter selection allowed non-tabled values of pressure angles). Versions of CPC-2A/102 prior to 12/30/06 should be updated. Serious improvement to Help, Screen navigation, and User Input selections. No bugs found, but a lot of rework and polish that would benefit any user. Posted Version 1.1001 to website 12/30/06

08/08/05 A number of issues were reported.
A number of additional user inputs were added to cover a wider range of gear specifications. Versions of CPC-2A/102 prior to 08/08/05 should be updated. Bug corrections and enhancements Posted Version 1.1 to website 08/08/05

06/28/04 Printing hangs on Windows XP for some printer configurations, esp. network printing. When printing in Windows XP, CPC-2A/102 can freeze in its window. Not usually a problem for Windows NT 4.0 and earlier versions. enhancement Posted Version 1.1 to website 6/28/04

09/29/03 Addition of user screens to select Generating cam and Profile Mismatch Factor.
List of cutters expanded to include "close" point widths.
Graphical data tables improved for interpolation and higher data point density.
Found and corrected one coding error. To avoid possible machine setup errors, Versions of CPC-2A/102 prior to 10/10/03 should be updated at first opportunity. Corrections and
enhancements Posted Version 1.1 to website 10/10/03

09/14/02 Added machine 102 type and settings
to standard and formate methods.
Added Windows-friendly printing Versions of CPC-2A prior to 09/14/02 should be considered for this update. Moved from Beta test
to Version 1.01 Posted Version 1.01 to website 09/14/02

11/06/99 Tooth angle calculation was in error. Tooth angle display in error. Corrected Posted updated module to website 11/06/99

Event/Discovery Date	Description	Severity	Action	Status/Date
07/10/07	(1) Pitch angle was not recalculated when addendum changed. (2) Finding Profile Factor (Kp) from Swing Angle was hit or miss when matching to an existing summary. Kp should be added to output print and preview. (3) Added Revised Method to Standard and Formate methods. This is expected to make matching an existing summary easier. (4) Linkage Setting added to Generating Cam selection screen would make staying under 1.400 easier. (5) Some settings between members were different in the case of miter sets.	Versions of CPC-2A/102 prior to 07/30/07 should be updated.	A lot of what was changed here has to do with making matches to existing summaries. Since there are many choices to be made while creating a summary, matching existing summaries is not so simple. Since matching has been expressed often in user comments, it seems a good idea to make matching an easier effort. Just remember that recreating a particular summary is NOT necessary to a successful summary. However matching builds confidence in the software and is a valuable way to learn the software. I regret to say that, until now, matching summaries was considered relatively unimportant. Besides, while making changes for the purpose of matching, a number of real issues were uncovered. (1) Pitch angle is recalculated for user changes in addendum or Whole Depth. Also, maximum dedendum angle before undercut is now displayed. (2) Standard Method only: Kp is recalculated when Swing Angle(s) are changed. Kp is also printed on the summary. (3) Rather than incorporating all revisions into the one Standard method presented, changes not appearing in the original Standard (Book) Method have been extracted to the new Revised Method. Standard Method now strictly follows the original documentation, while the Revised Method incorporates changes made by the OEM to the original method. To my knowledge, the documentation was never updated and distributed for these changes. It's not certain whether the Revised method is superior to the Standard, but it makes hand calculation easier. While not proven, there could be other justification in using the Revised method - but for now let's say it's just different. I would appreciate anyone's comments or experience in this area. (4) Linkage setting was one of the last calculations made, but directly influences the choice of a generating cam. So linkage has been added to the Generating Cam selection screen. (5) There's no reason for values and settings to vary between two miter members. It's possible for comparison's sake to force differences, but differences don't occur by default now. This issue has been corrected. Additional comments and hints are added to the Help facility. Cutter Selections in the Formate Method are now in a separate window.	Posted Version 1.1002 to website 07/30/07
12/21/06	New user had a number of questions and, while investigating, the help facility for the FORMATE method was found wanting. Navigation and some input prompts were confusing as well (e.g. Cutter selection allowed non-tabled values of pressure angles).	Versions of CPC-2A/102 prior to 12/30/06 should be updated.	Serious improvement to Help, Screen navigation, and User Input selections. No bugs found, but a lot of rework and polish that would benefit any user.	Posted Version 1.1001 to website 12/30/06
08/08/05	A number of issues were reported. A number of additional user inputs were added to cover a wider range of gear specifications.	Versions of CPC-2A/102 prior to 08/08/05 should be updated.	Bug corrections and enhancements	Posted Version 1.1 to website 08/08/05
06/28/04	Printing hangs on Windows XP for some printer configurations, esp. network printing.	When printing in Windows XP, CPC-2A/102 can freeze in its window. Not usually a problem for Windows NT 4.0 and earlier versions.	enhancement	Posted Version 1.1 to website 6/28/04
09/29/03	Addition of user screens to select Generating cam and Profile Mismatch Factor. List of cutters expanded to include "close" point widths. Graphical data tables improved for interpolation and higher data point density. Found and corrected one coding error.	To avoid possible machine setup errors, Versions of CPC-2A/102 prior to 10/10/03 should be updated at first opportunity.	Corrections and enhancements	Posted Version 1.1 to website 10/10/03
09/14/02	Added machine 102 type and settings to standard and formate methods. Added Windows-friendly printing	Versions of CPC-2A prior to 09/14/02 should be considered for this update.	Moved from Beta test to Version 1.01	Posted Version 1.01 to website 09/14/02
11/06/99	Tooth angle calculation was in error.	Tooth angle display in error.	Corrected	Posted updated module to website 11/06/99

Download Update for CPC-2A/102 How to Update Your Software

Module CPC-26 - Spiral Bevel Generator

Download Update for CPC-26 How to Update Your Software

This setup module is for Gleason No. 26 spiral bevel machine. The basic No. 26 may be used in several processes: roughing, finishing, grinding, production, and in "jobber" (Small Job Fixed Blade) mode. High production requires the fixed-blade setup method which requires special cutters/bodies specific to the job.

Change, Revisions and Bug Fix History: Updated 1/27/04

Event/Discovery
Date Description Severity Action Status/Date

04/28/05 Automatic addendum calculation for Gleason standard systems was not working. This was broken at the last enhancement. Corrected a bug that threw "Error code 12 RA variable not found." Error is not associated to "0" pinion addendum issue. Addendum was "0" for pinion when selecting standard systems. Required using "Spec Tth Proportions" System to enter Pinion addendum. Fixed pinion addendum bug for Gleason standard systems. Changes made to CPC-26.EXE module and posted to website
Version 1.03 04/28/05

03/15/05 Non-standard tooth proportions were not handled. There was a request to enter proportions for a stub tooth design variation. No error produced, but user limited in cases where addendum is not standard. A new option is added to the Systems Menu called "Spec Tth Proportions". Selecting this option enables input for gear and pinion addendums. Changes made to CPC-26 module and Help26 files and posted to website
Version 1.02 03/16/05

01/27/04 Printing hangs on Windows XP for some printer configurations, esp. network printing. When printing in Windows XP, CPC-26 can freeze in its window. Not usually a problem for Windows NT 4.0 and earlier versions. If Windows XP is installed or printer is failing then this upgrade is recommended. Windows print module added and CPC-26 module posted to website
Version 1.02 01/27/04

12/06/02 Spiral Angle input could not accept decimal degrees. No error produced, but user limited in cases where special Spiral Angle is used. Added 5 decimal places to Spiral Angle input. Corrected CPC-26 module and posted to website
Version 1.02 12/06/02

08/03/02 Small (3" or less) diameter cutters were ignored, producing an error when trying to Continue the setup process. Program generates message to say that a cutter can not be found, and restarts setup process. Corrected internal cutter selection process. Corrected CPC-26 module and posted to website
Version 1.02 08/03/02

02/14/00 6T/40T and 7T/50T combinations were "Unresolved for tooth thickness", which prevented completing summaries for teeth greater than 40T and 50T, resp. No error produced, but summary cannot proceed when gear is 40T (or 50T) and pinion is 6T (or 7T). extended cir. tooth thickness values for all gear sizes outside normal table values. Corrected CPC-26 module and posted to website
Version 1.02 02/14/00

07/17/99 When returning to main menu after entering or selecting a cutter in summary, tooling caused "file in use" Red screen error. Menu option tooling would try to open a file already in use. When error occurs, software is shutdown. No error is produced in summary. added code to tooling module to always close file if open, then open it normally. Corrected CPC-26 module and posted to website
07/19/99

06/22/99 A - Listing of cutter diameters limited to 2xCone Distance which is too confining. Opened list to display all diameters.
B - Omega=2xrollgear ratio was incorrect. Omega/2 was approx equal to rollgear ratio.
C - Occasional 80T found for last roll gear driven. Notified by user that 90T is fixed in last driven position. A - Summary required cutter diameters that may not be available to shop.
B - Summary error due to roll gear ratio # omega/1.92 is insignificant.
C -Program occasionally specifies 80T. Summary Instruction table allows 80T in last driven; must be a mistake. A - Full list of cutter diameters presented to user, with recommended sizes indicated in table. Help file updated.
B - Omega calculated from actual rollgear ratio as 1.92 x R/G ratio.
C - Although 80T is in instruction table, program now forces 90T as last driven rollgear. Corrected CPC-26 Module and posted to website
06/22/99

12/12/98 "No cutter qualifies" for specific tooth combinations. THK table had missing data point and program could not find thickness solution. Affects summary for certain tooth combinations; otherwise works correctly. Added data points to THK table & verified continuity of table's data points. Corrected CPC-26 Module and posted to website
12/19/98

Event/Discovery Date	Description	Severity	Action	Status/Date
04/28/05	Automatic addendum calculation for Gleason standard systems was not working. This was broken at the last enhancement. Corrected a bug that threw "Error code 12 RA variable not found." Error is not associated to "0" pinion addendum issue.	Addendum was "0" for pinion when selecting standard systems. Required using "Spec Tth Proportions" System to enter Pinion addendum.	Fixed pinion addendum bug for Gleason standard systems.	Changes made to CPC-26.EXE module and posted to website Version 1.03 04/28/05
03/15/05	Non-standard tooth proportions were not handled. There was a request to enter proportions for a stub tooth design variation.	No error produced, but user limited in cases where addendum is not standard.	A new option is added to the Systems Menu called "Spec Tth Proportions". Selecting this option enables input for gear and pinion addendums.	Changes made to CPC-26 module and Help26 files and posted to website Version 1.02 03/16/05
01/27/04	Printing hangs on Windows XP for some printer configurations, esp. network printing.	When printing in Windows XP, CPC-26 can freeze in its window. Not usually a problem for Windows NT 4.0 and earlier versions.	If Windows XP is installed or printer is failing then this upgrade is recommended.	Windows print module added and CPC-26 module posted to website Version 1.02 01/27/04
12/06/02	Spiral Angle input could not accept decimal degrees.	No error produced, but user limited in cases where special Spiral Angle is used.	Added 5 decimal places to Spiral Angle input.	Corrected CPC-26 module and posted to website Version 1.02 12/06/02
08/03/02	Small (3" or less) diameter cutters were ignored, producing an error when trying to Continue the setup process.	Program generates message to say that a cutter can not be found, and restarts setup process.	Corrected internal cutter selection process.	Corrected CPC-26 module and posted to website Version 1.02 08/03/02
02/14/00	6T/40T and 7T/50T combinations were "Unresolved for tooth thickness", which prevented completing summaries for teeth greater than 40T and 50T, resp.	No error produced, but summary cannot proceed when gear is 40T (or 50T) and pinion is 6T (or 7T).	extended cir. tooth thickness values for all gear sizes outside normal table values.	Corrected CPC-26 module and posted to website Version 1.02 02/14/00
07/17/99	When returning to main menu after entering or selecting a cutter in summary, tooling caused "file in use" Red screen error. Menu option tooling would try to open a file already in use.	When error occurs, software is shutdown. No error is produced in summary.	added code to tooling module to always close file if open, then open it normally.	Corrected CPC-26 module and posted to website 07/19/99
06/22/99	A - Listing of cutter diameters limited to 2xCone Distance which is too confining. Opened list to display all diameters. B - Omega=2xrollgear ratio was incorrect. Omega/2 was approx equal to rollgear ratio. C - Occasional 80T found for last roll gear driven. Notified by user that 90T is fixed in last driven position.	A - Summary required cutter diameters that may not be available to shop. B - Summary error due to roll gear ratio # omega/1.92 is insignificant. C -Program occasionally specifies 80T. Summary Instruction table allows 80T in last driven; must be a mistake.	A - Full list of cutter diameters presented to user, with recommended sizes indicated in table. Help file updated. B - Omega calculated from actual rollgear ratio as 1.92 x R/G ratio. C - Although 80T is in instruction table, program now forces 90T as last driven rollgear.	Corrected CPC-26 Module and posted to website 06/22/99
12/12/98	"No cutter qualifies" for specific tooth combinations. THK table had missing data point and program could not find thickness solution.	Affects summary for certain tooth combinations; otherwise works correctly.	Added data points to THK table & verified continuity of table's data points.	Corrected CPC-26 Module and posted to website 12/19/98

Download Update for CPC-26 How to Update Your Software

Module CPC-HOB - For All Gear Hobbing Machines

Download Update for CPC-HOB How to Update Your Software

CPC-HOB is a simple and painless way to set up all types of gear hobbers. You select a machine, enter gear specs, and CPC-HOB creates a complete set of change gears - for differential or non-differential machines. You easily control table feed. Easily sets up machines without differentials to cut helical gears.

Change, Revisions and Bug Fix History: Updated 4/17/04

Event/Discovery
Date Description Severity Action Status/Date

01/22/06 First screen and edit screen were not sync'ed to stay on selected machine.
Some warning messages were not very helpful explaining a problem.
Speeds & Feeds table and Prime Number table were not easily found. All Versions
of CPC-HOB
prior to 2.416
(01/22/06)
should be considered for this update. Improved screen navigation for more intuitive user feel.
Added new help screens to some warning messages.
Show F2 and F3 links to tables on final setup screen. Modified CPC-HOB and posted to website
Version 2.416
01/22/06

04/18/05 (1) A user suggested that CPC-HOB should have a list of excluded Index Change Gears for each hobbing machine.
(2) Discovered a problem when user modifies a lead change gear set. Upon modifying and exiting the Lead change window, the original unmodified set was displayed. Entering and exiting again would display the correct set as modified, but this was not acceptable.
All Versions
of CPC-HOB
prior to 2.415
(04/17/05)
should be updated. (1) Added a user-created list of excluded Index Change Gears for each hobbing machine. CPC-HOB uses the list to warn user when missing sizes are found in an otherwise good index change gear set. Please review Help (F1) at the warning window for ways to eliminate missing change gear sizes.
(2) Fixed Lead change window to correctly display modified lead change gears upon exit.
Modified CPC-HOB and posted to website
Version 2.415
04/18/05

11/20/04 Strange table feed behavior reported:
Table feed for differential machine sometimes changes uncontrollably. Occurs when Preference is for 2-gear feed gear set, and CPC-HOB automatically changes to 4-gear set when required by size of ratio. All Versions
of CPC-HOB
prior to 2.414
(11/20/04)
should be updated. Corrected table feed problem in CPC-HOB. Modified CPC-HOB and posted to website
Version 2.414
11/20/04

11/11/04 Two errors reported:
(1) Index gear set sometimes includes a gear smaller than minimum index preference. This occurs as a result of a smaller index constant combined with a prime workpiece gear.
(2) Differential gearset for Type B machine and large prime teeth could fail with fatal error. All Versions
of CPC-HOB
prior to 2.413 (11/11/04)
should be updated. Corrected two errors in CPC-HOB. Added new help notes. Modified CPC-HOB module files and posted to website
Version 2.413
11/11/04

09/03/04 Added new option to force Feed Change Gear sets to either 4 or 2 change gears for differential machines (Differential machines with fixed feed sums are unchanged).
Also automated feed gear creation to create 4 gear set when table feed requires it. Versions of CPC-HOB prior to 09/13/04 should be considered for this update. New option added to CPC-HOB to to set preference to 4-gear Feed Gear Sets on differential machines. Modified CPC-HOB module and posted to website
Version 2.412
09/13/04

04/17/04 Change gear pitch looses its decimal portion during setup.
The hob machine list table permits change gear pitch to be expressed with a decimal place (ex. 8.5) but the "Verify Hobbing Machine Data" screen (2nd screen in setup process) drops the decimal place prior to creating a setup. Versions of CPC-HOB prior to 04/17/04 should be considered for this update to improve the fit of change gears at the machine. Corrected CPC-HOB to use decimal portion of change gear pitch. Modified CPC-HOB module and posted to website
Version 2.412
04/17/04

11/08/03 Variation of hobber design discovered.
There are hobbers that use decimal index constants (such as 0.075) in the denominator of the traditional index over teeth (index/teeth) expression for index change gears. Attempting to use the reciprocal (13.333...) as the numerator index value doesn't work since the reciprocal is a repeating decimal which cannot be entered as an exact value. Versions of CPC-HOB prior to 11/08/03 should be considered for this update, esp. if using a hobber as described. Changed CPC-HOB to interpret a machine index value smaller than 1.0 as belonging in the denominator
of the index/teeth expression. Modified CPC-HOB module and posted to website
Version 2.412
11/08/03

01/06/02 Printing problems experienced in some Windows environments.
Menu Options are pushed down from view if machine list exceeds 7 machines.
Machine Index value limited to 99. Some Hobbers have index constants greater than 100. Versions of CPC-HOB prior to 02/02/02 should be considered for this update, esp. if experiencing print problems. Changed to send print jobs to Windows print manager.
Optionally creates either HOBSETUP.TXT or HOB(nnnn).TXT in home directory for each serialized setup printed.
Enhanced "Machine List" screen's utility and appearance. Updated Help screens.
Expanded input for machine Index Constant. Modified CPC-HOB module and posted to website
Version 2.41
02/02/02

08/19/01 Improved (best) change gear sets. New input fields for Transverse Pitch and Fellows Stub tooth systems. Versions of CPC-HOB prior to 08/19/01 should be considered for this update. Replaced faster algorithm with slightly slower, "best" ratio-to-gear set algorithm Modified CPC-HOB module and posted to website
08/19/01

05/01/01 Problem of rounding a decimal index constant occurred in "C" type machine for helical gear under some circumstances.The following example reproduces the error for a non-differential machine with index constant = 7.5 and feed constant = 0.01875, IdxCC=8, IdxP=12 MinFD=30:
For a12NDP 44T 27 Deg 15 min LH gear and table feed = .036 CPC-HOB produced an incorrect index set of 23 x 32 / 45 x 94. The index gear set should be 32 x 42 / 84 x 94. Versions of CPC-HOB prior to 05/01/01 have this bug and should be immediately replaced with this update. Corrected error in code Modified CPC-HOB module and posted to website
05/01/01

03/02/01 Added a simple table of materials to assist choosing a table feed. This table may be viewed at any time by touching the [F3] key.
Added new feature Modified CPC-HOB module and posted to website
03/03/01

03/02/01 Index ratio and index gear set for some setups was using the rounded value of machine index constant. No error occured for integer value of index constant, but occured for some (but not all) setups on machines with decimal values of index constant. The following example reproduces the error for a non-differential machine with index constant = 7.5 and feed constant = 0.01875:
For a 2 Module 76T 9 Deg LH gear and table feed = .028 CPC-HOB produced an incorrect index set of 28 x 32 / 86 x 99. The index gear set should be 28 x 30 / 86 x 99. Versions of CPC-HOB prior to 03/02/01have this bug and should be immediately replaced with this update. Eliminated error due to rounding of index constant. Corrected CPC-HOB module and posted to website
03/03/01

Event/Discovery Date	Description	Severity	Action	Status/Date
01/22/06	First screen and edit screen were not sync'ed to stay on selected machine. Some warning messages were not very helpful explaining a problem. Speeds & Feeds table and Prime Number table were not easily found.	All Versions of CPC-HOB prior to 2.416 (01/22/06) should be considered for this update.	Improved screen navigation for more intuitive user feel. Added new help screens to some warning messages. Show F2 and F3 links to tables on final setup screen.	Modified CPC-HOB and posted to website Version 2.416 01/22/06
04/18/05	(1) A user suggested that CPC-HOB should have a list of excluded Index Change Gears for each hobbing machine. (2) Discovered a problem when user modifies a lead change gear set. Upon modifying and exiting the Lead change window, the original unmodified set was displayed. Entering and exiting again would display the correct set as modified, but this was not acceptable.	All Versions of CPC-HOB prior to 2.415 (04/17/05) should be updated.	(1) Added a user-created list of excluded Index Change Gears for each hobbing machine. CPC-HOB uses the list to warn user when missing sizes are found in an otherwise good index change gear set. Please review Help (F1) at the warning window for ways to eliminate missing change gear sizes. (2) Fixed Lead change window to correctly display modified lead change gears upon exit.	Modified CPC-HOB and posted to website Version 2.415 04/18/05
11/20/04	Strange table feed behavior reported: Table feed for differential machine sometimes changes uncontrollably. Occurs when Preference is for 2-gear feed gear set, and CPC-HOB automatically changes to 4-gear set when required by size of ratio.	All Versions of CPC-HOB prior to 2.414 (11/20/04) should be updated.	Corrected table feed problem in CPC-HOB.	Modified CPC-HOB and posted to website Version 2.414 11/20/04
11/11/04	Two errors reported: (1) Index gear set sometimes includes a gear smaller than minimum index preference. This occurs as a result of a smaller index constant combined with a prime workpiece gear. (2) Differential gearset for Type B machine and large prime teeth could fail with fatal error.	All Versions of CPC-HOB prior to 2.413 (11/11/04) should be updated.	Corrected two errors in CPC-HOB. Added new help notes.	Modified CPC-HOB module files and posted to website Version 2.413 11/11/04
09/03/04	Added new option to force Feed Change Gear sets to either 4 or 2 change gears for differential machines (Differential machines with fixed feed sums are unchanged). Also automated feed gear creation to create 4 gear set when table feed requires it.	Versions of CPC-HOB prior to 09/13/04 should be considered for this update.	New option added to CPC-HOB to to set preference to 4-gear Feed Gear Sets on differential machines.	Modified CPC-HOB module and posted to website Version 2.412 09/13/04
04/17/04	Change gear pitch looses its decimal portion during setup. The hob machine list table permits change gear pitch to be expressed with a decimal place (ex. 8.5) but the "Verify Hobbing Machine Data" screen (2nd screen in setup process) drops the decimal place prior to creating a setup.	Versions of CPC-HOB prior to 04/17/04 should be considered for this update to improve the fit of change gears at the machine.	Corrected CPC-HOB to use decimal portion of change gear pitch.	Modified CPC-HOB module and posted to website Version 2.412 04/17/04
11/08/03	Variation of hobber design discovered. There are hobbers that use decimal index constants (such as 0.075) in the denominator of the traditional index over teeth (index/teeth) expression for index change gears. Attempting to use the reciprocal (13.333...) as the numerator index value doesn't work since the reciprocal is a repeating decimal which cannot be entered as an exact value.	Versions of CPC-HOB prior to 11/08/03 should be considered for this update, esp. if using a hobber as described.	Changed CPC-HOB to interpret a machine index value smaller than 1.0 as belonging in the denominator of the index/teeth expression.	Modified CPC-HOB module and posted to website Version 2.412 11/08/03
01/06/02	Printing problems experienced in some Windows environments. Menu Options are pushed down from view if machine list exceeds 7 machines. Machine Index value limited to 99. Some Hobbers have index constants greater than 100.	Versions of CPC-HOB prior to 02/02/02 should be considered for this update, esp. if experiencing print problems.	Changed to send print jobs to Windows print manager. Optionally creates either HOBSETUP.TXT or HOB(nnnn).TXT in home directory for each serialized setup printed. Enhanced "Machine List" screen's utility and appearance. Updated Help screens. Expanded input for machine Index Constant.	Modified CPC-HOB module and posted to website Version 2.41 02/02/02
08/19/01	Improved (best) change gear sets. New input fields for Transverse Pitch and Fellows Stub tooth systems.	Versions of CPC-HOB prior to 08/19/01 should be considered for this update.	Replaced faster algorithm with slightly slower, "best" ratio-to-gear set algorithm	Modified CPC-HOB module and posted to website 08/19/01
05/01/01	Problem of rounding a decimal index constant occurred in "C" type machine for helical gear under some circumstances.The following example reproduces the error for a non-differential machine with index constant = 7.5 and feed constant = 0.01875, IdxCC=8, IdxP=12 MinFD=30: For a12NDP 44T 27 Deg 15 min LH gear and table feed = .036 CPC-HOB produced an incorrect index set of 23 x 32 / 45 x 94. The index gear set should be 32 x 42 / 84 x 94.	Versions of CPC-HOB prior to 05/01/01 have this bug and should be immediately replaced with this update.	Corrected error in code	Modified CPC-HOB module and posted to website 05/01/01
03/02/01	Added a simple table of materials to assist choosing a table feed. This table may be viewed at any time by touching the [F3] key.		Added new feature	Modified CPC-HOB module and posted to website 03/03/01
03/02/01	Index ratio and index gear set for some setups was using the rounded value of machine index constant. No error occured for integer value of index constant, but occured for some (but not all) setups on machines with decimal values of index constant. The following example reproduces the error for a non-differential machine with index constant = 7.5 and feed constant = 0.01875: For a 2 Module 76T 9 Deg LH gear and table feed = .028 CPC-HOB produced an incorrect index set of 28 x 32 / 86 x 99. The index gear set should be 28 x 30 / 86 x 99.	Versions of CPC-HOB prior to 03/02/01have this bug and should be immediately replaced with this update.	Eliminated error due to rounding of index constant.	Corrected CPC-HOB module and posted to website 03/03/01

Download Update for CPC-HOB How to Update Your Software

Module CPC-TMILL - For All Thread Milling Machines

Download Update for CPC-TMILL How to Update Your Software

CPC-TMILL calculates everything you need to set up any thread mill. Cutter angle, change gears, cutter point width, thread specs, over pin measurement, and more.

Change, Revisions and Bug Fix History: Updated 4/30/05

Event/Discovery
Date Description Severity Action Status/Date

04/23/06 Added Preference screen. Allows choices for 32-bit, 16-bit, and DOS based PC's. Adaption to variation in printing systems will be improved for certain print configurations.

Also added choice of setting sound (beep) on or off.
Updated Help screen to explain new option. Versions of CPC-TMILL prior to 04/23/06 could benefit from this update. Added enhancement. Corrected and enhanced CPC-TMILL module.
Update Version 1.2004
posted to website 04/23/06

04/15/06 Enhanced gear set calculation and warning messages when problem occurs. Automatically expands gear sizes if program determines that gear set will not reach on machine. Gear calculation now uses full range of given change gears to achieve low ratios.

Added separate menu option (SAVE) to save setups to files TMILLi.TXT and TMILLm.TXT.
Updated Help screen to explain new option. Versions of CPC-TMILL prior to 04/15/06 will benefit from this update. Added enhancements and made one bug fix in gear calculation routine. Corrected and enhanced CPC-TMILL module.
Update Version 1.2003
posted to website 04/15/06

04/30/05 Added Axial DP / Module inputs alongside the Normal DP / Module inputs.

Found syntax error when up-arrowing from Entries field after entering American STD Screw Thread.

Found two missing Help screens on two input fields. Versions of CPC-TMILL prior to 04/30/05 will benefit from this update. Added enhancements and made one bug fix.

Added some missing Help screens and added Help for additional inputs mentioned.

Click F1 key while in each field to view help if you have questions. Corrected and enhanced inputs for CPC-TMILL module.
Update Version 1.2002
posted to website 04/30/05

03/24/05 User reported that change gears would not reach on machine.

Found navigation to be unpredictable between the first two screens.

Best ratio method was found to be slow and in need of update.

Added printer update for Windows. Versions of CPC-TMILL prior to 03/26/05 should be replaced with this update. Added (2) machine specs: CC Distance and NDP for Change Gears. These are used by CPC-TMILL to determine change gear sets that will reach on machine.

These machine specs are easily measured at the machine, and should be entered into CPC-TMILL by editing each machine you use. If you enter these specs, you will automatically find change gears that reach.
Select each machine in your Machine List screen, click <Edit>, and enter your measurements into:
Change Gear Pitch
and
Fixed Chg Gear CC Dist
fields. Click F1 key while in each field to view help if you have questions. Corrected CPC-TMILL module and added new modules for printing.
Update Version 1.2
posted to website 03/26/05

Event/Discovery Date	Description	Severity	Action	Status/Date
04/23/06	Added Preference screen. Allows choices for 32-bit, 16-bit, and DOS based PC's. Adaption to variation in printing systems will be improved for certain print configurations. Also added choice of setting sound (beep) on or off. Updated Help screen to explain new option.	Versions of CPC-TMILL prior to 04/23/06 could benefit from this update.	Added enhancement.	Corrected and enhanced CPC-TMILL module. Update Version 1.2004 posted to website 04/23/06
04/15/06	Enhanced gear set calculation and warning messages when problem occurs. Automatically expands gear sizes if program determines that gear set will not reach on machine. Gear calculation now uses full range of given change gears to achieve low ratios. Added separate menu option (SAVE) to save setups to files TMILLi.TXT and TMILLm.TXT. Updated Help screen to explain new option.	Versions of CPC-TMILL prior to 04/15/06 will benefit from this update.	Added enhancements and made one bug fix in gear calculation routine.	Corrected and enhanced CPC-TMILL module. Update Version 1.2003 posted to website 04/15/06
04/30/05	Added Axial DP / Module inputs alongside the Normal DP / Module inputs. Found syntax error when up-arrowing from Entries field after entering American STD Screw Thread. Found two missing Help screens on two input fields.	Versions of CPC-TMILL prior to 04/30/05 will benefit from this update.	Added enhancements and made one bug fix. Added some missing Help screens and added Help for additional inputs mentioned. Click F1 key while in each field to view help if you have questions.	Corrected and enhanced inputs for CPC-TMILL module. Update Version 1.2002 posted to website 04/30/05
03/24/05	User reported that change gears would not reach on machine. Found navigation to be unpredictable between the first two screens. Best ratio method was found to be slow and in need of update. Added printer update for Windows.	Versions of CPC-TMILL prior to 03/26/05 should be replaced with this update.	Added (2) machine specs: CC Distance and NDP for Change Gears. These are used by CPC-TMILL to determine change gear sets that will reach on machine. These machine specs are easily measured at the machine, and should be entered into CPC-TMILL by editing each machine you use. If you enter these specs, you will automatically find change gears that reach. Select each machine in your Machine List screen, click <Edit>, and enter your measurements into: Change Gear Pitch and Fixed Chg Gear CC Dist fields. Click F1 key while in each field to view help if you have questions.	Corrected CPC-TMILL module and added new modules for printing. Update Version 1.2 posted to website 03/26/05

Download Update for CPC-TMILL How to Update Your Software

Module CPC-RATIO - A Handy Gear Set Finder

Download Update for CPC-RATIO How to Update Your Software

Manual machines such as shapers, thread mills, hob grinders, rack machines usually need change gears. CPC-RATIO makes finding accurate change gears quick and easy. CPC-RATIO finds a set based on YOUR gear inventory, too.

Change, Revisions and Bug Fix History: Updated 6/21/07

Event/Discovery
Date Description Severity Action Status/Date

07/13/07
Corrected problems with paper print 07/14/07 Corrected bugs in print that caused fatal error when print to paper was selected. Update highly recommended.
Paper print is unuseable until this update is installed. This update should not require a new Activation key. But if CPC-RATIO runs as the DEMO version after updating, please request a new Activation key. Posted Version 1.22
to website 07/14/07

Began rewrite 05/07/07
Completed rewrite 06/21/07 1- This is a completely new version, therefore the complete software will download and overlay existing software.
Read the README.TXT file to learn about new features and changes.
Please request a new activation key if it runs as the DEMO version after replacement.
2- Unlimited number of machines may be added to CPC-RATIO, each complete with settings and gear inventory.
3- Include and Exclude tables replace the smaller Exclude list. Allows unlimited description of gear inventory for any number of machines.
4- Complete formula may be entered verbatim from machine manual. 1 - Update highly recommended -
New features improve useability and interface for user.
2- Excluded gear size lists are now unlimited. Also an unlimited list of extra gear sizes has been added for each machine. Program is modified and enhanced.

This update should not require a new Activation key. But if CPC-RATIO runs as the DEMO version after updating, please request a new Activation key. Posted Version 1.22
to website 06/21/07

01/26/04 1- When using F10 to exit the configuration screen, window can hang if a field value was invalid.
2- Excluded size list in configuration screen is too limited. 1 - Critical -
Update recommended to prevent window from hanging which requires task manager to quit.
2- Excluded gear sizes are expanded from 15 to 35 possible sizes. Program is corrected and enhanced. Posted to website 01/26/04

12/30/03 A four-gear set including a fixed-center pair, where A+B (or C+D) sum of teeth is constant, is not aware of user's excluded gear list. Critical -
Update recommended if finding gearsets that require a driver/driven pair with fixed sum of teeth.
An example is a Fellows 7A gear shaper. Program is corrected to fully utilize excluded gear list. Posted to website 12/30/03

12/23/03 Update printer driver. Non-critical - Update only if you are having print problems. Added windows printer driver and dialog. Now prints to the default Windows printer. Change to exit config screen with F10 key. Now you can toggle between ratio screen and config screen with F10. Posted to website 12/23/03

11/07/03 Change gears for ratios close to 1.0 were incorrect; that is, CPC-RATIO was not finding the best possible change gear set for ratios in the range from 0.95 to 1.1 approximately. Other ratios appear not to be affected by the error but this is not a certainty for all possible ratios. critical -
you should update
before further use This update corrects the problem with best four gear set, but results in
a slight increase in time to find a gear set. Corrected CPC-RATIO module and posted to website 11/09/03

01/09/00 (1) Added maximum limit size to final driver and driven gears in gearsets. This extends the ability to tailor CPC-RATIO to machines with size restrictions on specific gear positions.
Added confirmation screen to prevent accidental exiting with [Esc] key. Updated help. non-critical These features have been added to CPC-RATIO per suggestion from customer. Corrected CPC-RATIO module and posted to website 01/09/00

10/05/99 (1) Added ability to optionally set fixed teeth total on pair of driver/driven gears.
This makes it easier to find gearsets for Fellows-type shapers which typically use a driver/driven pair on fixed centers.
(2) Added print output of gearset and all conditions and constraints. non-critical These features have been added to CPC-RATIO per suggestion from customer. Other changes were made to improve display. Several issues with algorithms were resolved. 10/17/99. Corrected CPC-RATIO module and posted to website 10/18/99

Event/Discovery Date	Description	Severity	Action	Status/Date
07/13/07 Corrected problems with paper print 07/14/07	Corrected bugs in print that caused fatal error when print to paper was selected.	Update highly recommended. Paper print is unuseable until this update is installed.	This update should not require a new Activation key. But if CPC-RATIO runs as the DEMO version after updating, please request a new Activation key.	Posted Version 1.22 to website 07/14/07
Began rewrite 05/07/07 Completed rewrite 06/21/07	1- This is a completely new version, therefore the complete software will download and overlay existing software. Read the README.TXT file to learn about new features and changes. Please request a new activation key if it runs as the DEMO version after replacement. 2- Unlimited number of machines may be added to CPC-RATIO, each complete with settings and gear inventory. 3- Include and Exclude tables replace the smaller Exclude list. Allows unlimited description of gear inventory for any number of machines. 4- Complete formula may be entered verbatim from machine manual.	1 - Update highly recommended - New features improve useability and interface for user. 2- Excluded gear size lists are now unlimited. Also an unlimited list of extra gear sizes has been added for each machine.	Program is modified and enhanced. This update should not require a new Activation key. But if CPC-RATIO runs as the DEMO version after updating, please request a new Activation key.	Posted Version 1.22 to website 06/21/07
01/26/04	1- When using F10 to exit the configuration screen, window can hang if a field value was invalid. 2- Excluded size list in configuration screen is too limited.	1 - Critical - Update recommended to prevent window from hanging which requires task manager to quit. 2- Excluded gear sizes are expanded from 15 to 35 possible sizes.	Program is corrected and enhanced.	Posted to website 01/26/04
12/30/03	A four-gear set including a fixed-center pair, where A+B (or C+D) sum of teeth is constant, is not aware of user's excluded gear list.	Critical - Update recommended if finding gearsets that require a driver/driven pair with fixed sum of teeth. An example is a Fellows 7A gear shaper.	Program is corrected to fully utilize excluded gear list.	Posted to website 12/30/03
12/23/03	Update printer driver.	Non-critical - Update only if you are having print problems.	Added windows printer driver and dialog. Now prints to the default Windows printer. Change to exit config screen with F10 key. Now you can toggle between ratio screen and config screen with F10.	Posted to website 12/23/03
11/07/03	Change gears for ratios close to 1.0 were incorrect; that is, CPC-RATIO was not finding the best possible change gear set for ratios in the range from 0.95 to 1.1 approximately. Other ratios appear not to be affected by the error but this is not a certainty for all possible ratios.	critical - you should update before further use	This update corrects the problem with best four gear set, but results in a slight increase in time to find a gear set.	Corrected CPC-RATIO module and posted to website 11/09/03
01/09/00	(1) Added maximum limit size to final driver and driven gears in gearsets. This extends the ability to tailor CPC-RATIO to machines with size restrictions on specific gear positions. Added confirmation screen to prevent accidental exiting with [Esc] key. Updated help.	non-critical	These features have been added to CPC-RATIO per suggestion from customer.	Corrected CPC-RATIO module and posted to website 01/09/00
10/05/99	(1) Added ability to optionally set fixed teeth total on pair of driver/driven gears. This makes it easier to find gearsets for Fellows-type shapers which typically use a driver/driven pair on fixed centers. (2) Added print output of gearset and all conditions and constraints.	non-critical	These features have been added to CPC-RATIO per suggestion from customer. Other changes were made to improve display. Several issues with algorithms were resolved. 10/17/99.	Corrected CPC-RATIO module and posted to website 10/18/99

Download Update for CPC-RATIO How to Update Your Software

Module CPC-BV4 - Coniflex Straight Bevel Gear Generator

Download Update for CPC-BV4 How to Update Your Software

This software module is for Gleason No. 104 & 114 Coniflex machine summaries. These machines use two rotary milling style cutters. Cutters control tooth bearing pattern. Often a range of cutters will be useable for a particular summary. CPC-BV4 provides all dimensional input based on industry standards and suggests tooling. These default input values may be changed, but CPC-BV4 informs you of questionable choices. Choices that won't work are prevented and explained.

Change, Revisions and Bug Fix History: Updated 3/23/04

Event/Discovery
Date Description Severity Action Status/Date

02/25/08 Index and Ratio Roll change gears
were missing from screen.
Sliding base limits were too restrictive for
No. 114 machine.
Confusing demo messages showing up
in activated version. Versions of CPC-BV4 prior to 02/25/08 should be updated. Added change gear sets to screen and printout.
Changed cutter tables to include all standard cutter letters and blade widths.
Allow user to add custom cutter to inventory "on the fly".
Fixed Sliding Base limit problem with No. 114. Was using same
limits as 104 sliding base setting. Modified CPC-BV4 module and posted to website
Version 1.1
05/25/08

03/23/04 Printing problems experienced in some Windows environments. Versions of CPC-BV4 prior to 03/23/04 should be considered for this update, esp. if experiencing print problems. Changed to send print jobs to Windows print manager.
Creates (nnnnnnnn).TXT in SUMMARY directory for each serialized setup printed where (nnnnnnnn) is the summary serial number. Modified CPC-BV4 module and posted to website
Version 1.1
03/23/04

01/08/00
Runtime error caused by cutter menu mbar not initially declared.
Error Code 12 - variable mbar not found. Entering a FW less than minimum tooth bearing prevents cutter selection. Error halts program. A workaround is to keep FW larger than .215 for 104, .295 for 114. Fix code to prevent error and add user warning & help text CPC-BV4 modified and posted to website 01/08/00

11/06/99
enhancements, two corrections. (1) Added user input to specify cutter point width and view cutter inventory list while making a choice. Added new topics to on-line help.
(2) Fixed observed error in display of cutter letters. Gear and pinion were switched. Printout was correct.
(3) Tooth angle calculation was in error. (1)non-critical

(2)misleading display, printout OK
(3)incorrect tooth angle displayed Corrections and features have been added to CPC-BV4 module. 11/06/99. CPC-BV4 modified and posted to website 11/06/99

11/03/99
enhancements per user suggestion. (1) Added user input to specify cutter letters (A-F) independent of tooth bearing.
(2) Zero input for profile now generates a "traditional" summary that may be compared number-for-number to older summaries.
(3) Rearranged process steps (cutter selection first, then profile input) to streamline process.
(4) Added new on-line F1 help detail to explain wait windows that "pop-up" to identify problem areas. non-critical These features have been added to CPC-BV4 module. 11/03/99. CPC-BV4 modified and posted to website 11/03/99

10/31/99
enhancements to cutter selection per user suggestion. (1) Added table list for cutter inventory. Full user input (%life, serial no., PA, PW, etc).
Now easier to find and identify available cutters when choosing a tooth bearing.
(2) Expanded number of possible tooth bearings beyond recommended range (1/2-2/3 FW). Color coded displayed tooth bearing list to easily identify best tooth bearing choices. Added new on-line help text.
(3) added optional automatic set-up of "net use" network command for printers shared on NT workstations. non-critical These features have been added to CPC-BV4 module. 10/31/99. CPC-BV4 modified and posted to website 10/31/99

10/30/99
while testing profile inputs, triggered a red screen error. ASIN() function out of range in calculations following very large profile input. Program failure point for large user input value. test ASIN() argument, warn user, and loop back when out of +/-1 range. 10/30/99. Corrected and tested CPC-BV4

Event/Discovery Date	Description	Severity	Action	Status/Date
02/25/08	Index and Ratio Roll change gears were missing from screen. Sliding base limits were too restrictive for No. 114 machine. Confusing demo messages showing up in activated version.	Versions of CPC-BV4 prior to 02/25/08 should be updated.	Added change gear sets to screen and printout. Changed cutter tables to include all standard cutter letters and blade widths. Allow user to add custom cutter to inventory "on the fly". Fixed Sliding Base limit problem with No. 114. Was using same limits as 104 sliding base setting.	Modified CPC-BV4 module and posted to website Version 1.1 05/25/08
03/23/04	Printing problems experienced in some Windows environments.	Versions of CPC-BV4 prior to 03/23/04 should be considered for this update, esp. if experiencing print problems.	Changed to send print jobs to Windows print manager. Creates (nnnnnnnn).TXT in SUMMARY directory for each serialized setup printed where (nnnnnnnn) is the summary serial number.	Modified CPC-BV4 module and posted to website Version 1.1 03/23/04
01/08/00 Runtime error caused by cutter menu mbar not initially declared. Error Code 12 - variable mbar not found.	Entering a FW less than minimum tooth bearing prevents cutter selection.	Error halts program. A workaround is to keep FW larger than .215 for 104, .295 for 114.	Fix code to prevent error and add user warning & help text	CPC-BV4 modified and posted to website 01/08/00
11/06/99 enhancements, two corrections.	(1) Added user input to specify cutter point width and view cutter inventory list while making a choice. Added new topics to on-line help. (2) Fixed observed error in display of cutter letters. Gear and pinion were switched. Printout was correct. (3) Tooth angle calculation was in error.	(1)non-critical (2)misleading display, printout OK (3)incorrect tooth angle displayed	Corrections and features have been added to CPC-BV4 module. 11/06/99.	CPC-BV4 modified and posted to website 11/06/99
11/03/99 enhancements per user suggestion.	(1) Added user input to specify cutter letters (A-F) independent of tooth bearing. (2) Zero input for profile now generates a "traditional" summary that may be compared number-for-number to older summaries. (3) Rearranged process steps (cutter selection first, then profile input) to streamline process. (4) Added new on-line F1 help detail to explain wait windows that "pop-up" to identify problem areas.	non-critical	These features have been added to CPC-BV4 module. 11/03/99.	CPC-BV4 modified and posted to website 11/03/99
10/31/99 enhancements to cutter selection per user suggestion.	(1) Added table list for cutter inventory. Full user input (%life, serial no., PA, PW, etc). Now easier to find and identify available cutters when choosing a tooth bearing. (2) Expanded number of possible tooth bearings beyond recommended range (1/2-2/3 FW). Color coded displayed tooth bearing list to easily identify best tooth bearing choices. Added new on-line help text. (3) added optional automatic set-up of "net use" network command for printers shared on NT workstations.	non-critical	These features have been added to CPC-BV4 module. 10/31/99.	CPC-BV4 modified and posted to website 10/31/99
10/30/99 while testing profile inputs, triggered a red screen error.	ASIN() function out of range in calculations following very large profile input.	Program failure point for large user input value.	test ASIN() argument, warn user, and loop back when out of +/-1 range. 10/30/99.	Corrected and tested CPC-BV4

Download Update for CPC-BV4 How to Update Your Software

Module CPC-BV1 - For Gleason No. 16, 7, and 7A Spiral Bevel Gear Generators

Download Update for CPC-BV1 How to Update Your Software

This setup module is for Gleason Spiral Generators with tilt mechanism using the Special Jobbing Method (SJM). This machine uses a rotary face milling style cutter. Cutters control tooth bearing pattern. Often a range of cutters will be useable for a particular summary. CPC-BV1 provides all dimensional input based on industry standards and suggests tooling. These default input values may be changed, but CPC-BV1 informs you of questionable choices. Choices that won't work are prevented and explained.

Change, Revisions and Bug Fix History: Updated 10/17/04

Event/Discovery
Date Description Severity Action Status/Date

12/18/06
Cutter Numbers - limited to standard sizes in some internal areas of code.
While numeric input allowed decimal cutter sizes program could not use these custom sizes.

Syntax error (12) could occur on WldMax if no cutter diameter matched.

PLEASE NOTE:
Beta code is included for jobbing method on machine 116. This method has not been field tested on No. 116 machines, so
USE AT YOUR OWN RISK
No. 116 machine can be selected from Machine List.

FYI - This Beta program code for 116 converts No. 16 machine settings to No. 116 settings. While this conversion has reportedly worked well when converting 2-step production settings, jobbing has not been demonstrated as necessary or practical for No. 116. This is based on our limited experience so far. Update is suggested in all cases.

No. 116 summaries are approved for field testing only.

If you run No. 116 machine trials using this software,
Please your results. Custom cutter sizes permitted from 3" to 16" dia.

WldMax initialized to avoid syntax error.

All comments welcome, especially if beta testing on 116 machine.
Posted to website 12/20/06

10/13/04
Cutter Number Decimals Allowed
Cutter numbers were limited to integer values.
Update is suggested in all cases.

Cutter numbers may be entered as
decimal number to 3 places.
Help files have been updated.
Posted to website 10/17/04

09/14/04
Tilt and Swivel angle corrections
Errors can occur with tilt and swivel angles especially when right hand pinion is entered. Also, angles did not respect machine limits.
Update is recommended in all cases.

Software corrections
have been made.
Posted to website 09/19/04

03/27/04
Improve printer functionality, especially
for Windows XP. Update Printer module
to use Windows default printer and print option
dialog.
Update is recommended in all cases,
especially if experiencing
printer problems.
New printer module
has been added.
Posted to website 03/27/04

11/20/03
Begin enhancements and corrections. Update to include (2)additional Gleason machines.

Correct some software bugs. Needs a better user interface. Update recommended in all cases, especially if you have a Gleason 7 or 7A machine.

Creates summaries for Gleason Nos. 7 and 7A Generators in addition to Gleason No. 16.

Cutter number selection and tooling list added to simplify selections. Several software bugs have been corrected. Posted to website 12/18/03

08/04/99 Report print was not consistent with displayed summary. Printed summary was incorrect for some items; machine summary setup values were OK. Corrected printout. Corrected CPC-BV1 Module and posted to website 08/04/99

Event/Discovery Date	Description	Severity	Action	Status/Date
12/18/06	Cutter Numbers - limited to standard sizes in some internal areas of code. While numeric input allowed decimal cutter sizes program could not use these custom sizes. Syntax error (12) could occur on WldMax if no cutter diameter matched. PLEASE NOTE: Beta code is included for jobbing method on machine 116. This method has not been field tested on No. 116 machines, so USE AT YOUR OWN RISK No. 116 machine can be selected from Machine List. FYI - This Beta program code for 116 converts No. 16 machine settings to No. 116 settings. While this conversion has reportedly worked well when converting 2-step production settings, jobbing has not been demonstrated as necessary or practical for No. 116. This is based on our limited experience so far.	Update is suggested in all cases. No. 116 summaries are approved for field testing only. If you run No. 116 machine trials using this software, Please your results.	Custom cutter sizes permitted from 3" to 16" dia. WldMax initialized to avoid syntax error. All comments welcome, especially if beta testing on 116 machine.	Posted to website 12/20/06
10/13/04 Cutter Number Decimals Allowed	Cutter numbers were limited to integer values.	Update is suggested in all cases.	Cutter numbers may be entered as decimal number to 3 places. Help files have been updated.	Posted to website 10/17/04
09/14/04 Tilt and Swivel angle corrections	Errors can occur with tilt and swivel angles especially when right hand pinion is entered. Also, angles did not respect machine limits.	Update is recommended in all cases.	Software corrections have been made.	Posted to website 09/19/04
03/27/04 Improve printer functionality, especially for Windows XP.	Update Printer module to use Windows default printer and print option dialog.	Update is recommended in all cases, especially if experiencing printer problems.	New printer module has been added.	Posted to website 03/27/04
11/20/03 Begin enhancements and corrections.	Update to include (2)additional Gleason machines. Correct some software bugs. Needs a better user interface.	Update recommended in all cases, especially if you have a Gleason 7 or 7A machine.	Creates summaries for Gleason Nos. 7 and 7A Generators in addition to Gleason No. 16. Cutter number selection and tooling list added to simplify selections. Several software bugs have been corrected.	Posted to website 12/18/03
08/04/99	Report print was not consistent with displayed summary.	Printed summary was incorrect for some items; machine summary setup values were OK.	Corrected printout.	Corrected CPC-BV1 Module and posted to website 08/04/99

Download Update for CPC-BV1 How to Update Your Software

Module CPC-FS - Fixed Setting Method For Gleason No. 116 Spiral Bevel Gear Generators

Download Update for CPC-FS How to Update Your Software

This setup module is for Gleason Hypoid Spiral Generators. This machine uses a rotary face milling style cutter. Cutters control tooth bearing pattern. Often a range of cutters will be useable for a particular summary. CPC-FS provides all dimensional input based on industry standards and suggests tooling. These default input values may be changed, but CPC-FS informs you of questionable choices. Choices that won't work are prevented and explained.

Change, Revisions and Bug Fix History: Updated 05/14/08

Event/Discovery
Date Description Severity Action Status/Date

05/14/08
This is the Beta version of CPC-FS
which is still in field testing.

PLEASE NOTE:

FYI - Inclusion of comments, corrections, and in-house testing are continuing. It is important for testers to check this page often for updates. If you are a beta tester for this software,
please report your comments and findings to group. All comments are welcome. Posted to website 05/14/08

Event/Discovery Date	Description	Severity	Action	Status/Date
05/14/08	This is the Beta version of CPC-FS which is still in field testing. PLEASE NOTE: FYI - Inclusion of comments, corrections, and in-house testing are continuing. It is important for testers to check this page often for updates.	If you are a beta tester for this software, please report your comments and findings to group.	All comments are welcome.	Posted to website 05/14/08

Module CPC-HYP - For Gleason No. 16, 116, and 26 Hypoid Bevel Gear Generators

Download Update for CPC-HYP How to Update Your Software

This setup module is for Gleason Hypoid Spiral Generators. This machine uses a rotary face milling style cutter. Cutters control tooth bearing pattern. Often a range of cutters will be useable for a particular summary. CPC-HYP provides all dimensional input based on industry standards and suggests tooling. These default input values may be changed, but CPC-HYP informs you of questionable choices. Choices that won't work are prevented and explained.

Change, Revisions and Bug Fix History: Updated 10/17/04

Event/Discovery
Date Description Severity Action Status/Date

11/24/07
This is the Beta version of CPC-HYP
which is still in field testing.

PLEASE NOTE:

FYI - Inclusion of comments, corrections, and in-house testing are continuing. It is important for testers to check this page often for updates. If you are a beta tester for this software,
please report your comments and findings to group. All comments are welcome. Posted to website 11/24/07

Event/Discovery Date	Description	Severity	Action	Status/Date
11/24/07	This is the Beta version of CPC-HYP which is still in field testing. PLEASE NOTE: FYI - Inclusion of comments, corrections, and in-house testing are continuing. It is important for testers to check this page often for updates.	If you are a beta tester for this software, please report your comments and findings to group.	All comments are welcome.	Posted to website 11/24/07

Important notes about updating your software:

These instructions on print-friendly page

CPC software updates are not complete stand-alone programs. If you want to download a complete software program, then you must download from the "demo" page.

Updating your licensed software will not require a new activation key. Your activation key is guaranteed to work as long as you install the updated software on the originally installed computer.

If you are installing on a new computer, please go to the demo download page for complete packages. The software packages listed there at at the same version level as the updates shown here.

If you have any difficulty or questions please your company name, phone number of someone we may contact, and the computer ID displayed by the software when you try to activate it. Please include your Email address.

Make a backup copy of your CPC software. This is not a requirement to accomplish an update, but having a backup copy before performing any changes is always a good idea.

Updates are always compressed into a single self-extracting downloadable file ending with .EXE file extension.

Step 1. When downloading a new update, save the new file into the same directory as your existing CPC software. If you are asked whether to overwrite an earlier file, answer "yes".

Step 2. Right click Start and select Explore to open up your Windows File Explorer. Find your CPC software directory which now contains the update file you just downloaded. The update file is a self-extracting compressed file with .EXE extension. If your original demo download file is in this directory, don't confuse it with the update file. The update file name will end with "...UPD.EXE" or "UP.EXE".

Begin the extraction and replacement by double-clicking the ...UPD.EXE file. As each file is extracted, answer "Y" or "A" to allow all replacements. This will accomplish the update.

Congratulations! You have just completed the update for your CPC software.

What if you downloaded the wrong update file for your software and performed the update anyway? Don't worry - no damage was done, but your software was not updated either. Just go back to Step 1 to find the correct update to download and repeat the process.

Return to top of page

CPC-24 - Straight Bevel Gear Shaper	CPC-2A/102 - Coniflex Straight Bevel Generator
CPC-26 - Spiral Bevel Generator	CPC-HOB - For All Gear Hobbing Machines
CPC-TMILL - For All Thread Milling Machines	CPC-RATIO - A Versatile Universal Gear Set Finder	CPC-FS - Fixed Setting Method for No. 116 Spiral Bevel Generator
CPC-BV4 - Coniflex Straight Bevel Gear Generator	CPC-BV1 - No. 16, 7A Spiral Bevel Gear Generator	CPC-HYP - Hypoid for Nos. 16, 116, and 26 Hypoid Bevel Gear Generator