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Cutting gears on a shaper.

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NeoTech:

 

has any1 tried this.. does it work?!

Lew_Merrick_PE:
Neo,

There is no reason this approach would not work so long as (A) you have enough power to make the cut and (B) you can make the cutter with sufficient rake & clearance.  It is conceptually simple, but the details are likely to be more fun than rational to develop.  There is another approach that someone here posted (relatively) recently where you would use a drive spud that was the pitch diameter of the gear driven by a friction feed such that a single point tool would progressively hob a tooth.  You still have to (manually) increment your blank for each tooth, but the variables of manufacture are much simpler to control.

BillTodd:
Interesting idea, but the bigger the gear, the longer cutter required

Indexing the gear would surely be easier?

shipto:
correct me if I am wrong but wouldnt you only be able to make gears with the same number of teeth as the pattern?

John Hill:
There is a, maybe, better technique which uses a single cutter and the work is rotated by a taut wire that is wound around a wheel of the required pitch circle diameter.
http://neme-s.org/Shaper%20Books/Michael_Moore/shaper%20gear%20cut.pdf

Gear cutting on a shaper is something that might have potential for an electronic solution?

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