Posted by BillS on February 03, 2014 at 21:15:50:
In Reply to: proportional changes spiral and hypoid gear posted by tom on January 30, 2014 at 01:09:19:
Hi Tom,
I found this general text for bias changes in
no. 16 machine pinion settings affecting contact pattern:
| Tooth Bearing | Pinion Test Roll | Center To Back | Sliding Base | Radial Setting |
| --------------------------------------------------------------------------- | ||||
| too high at | ||||
| large end | Increase | Increase | Decrease | Increase |
| Too low at | ||||
| small end | ||||
For an opposite tooth bearing position, reverse changes (increase or decrease) from those shown above.
This is taken from a Gleason description of Fixed Setting Method, where proportional amounts of changes in settings are calculated as part of the method.
It would be great if this thread continues with photos or examples of tooth contact patterns, etc.