Re: CAD(ing) gears for later milling

--- In CAD_CAM_EDM_DRO@y..., "Smoke" <smoke@t...> wrote:

> It would appear your saying all those gears the auto industry makes

using

> form cutters are incorrect. And they've made them that way for

many years.

>

Not at all. They use gear hobbers and grinders to make any kind of
quality fitting gear. The hob has the same form as the fitted rack
and the involute teeth are generated by progressively rotating the
gear blank through the teeth. No decent gear manufacturer would be
caught dead trying to mill a gear with an involute form cutting end
mill.

Newer technologies tend to make plastic gears with injection molding
processes,and there have been some successful application of sintered
processes to gear making as well in some metals.


Best Regards,

Fred Smith
IMService