Re: Relationship between cutter number and teeth of gear


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Posted by Bill S. on March 29, 2002 at 20:18:17:

In Reply to: Relationship between cutter number and teeth of gear posted by Azher Shahzad on March 26, 2002 at 13:39:09:

Are you asking in reference to a #26 Gleason? Summaries for that machine use the sum of cutter numbers to choose cutters for gear and pinion.

Cutter number is not based on teeth only, but on a series of calculations leading to an ideal sum of cutter numbers.

If the same cutter can be used for gear and pinion (i.e. cutter number is 1/2 the ideal sum) then the shop has one less thing to do in the changeover. If that cutter is not available, then different cutters are selected and the summary concludes with machine settings different from those for a single cutter.

A job shop with a minimal cutter inventory will sooner or later find that some gear combinations require a cutter number not in inventory. For that reason, it's good to do a summary before quoting the job.

This explanation is over simplified, but I hope it helps.


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