Re: Brown Sharpe Gear Hobber


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Posted by BillS on November 27, 2006 at 12:37:00:

In Reply to: Re: Brown Sharpe Gear Hobber posted by skinnekid on October 29, 2006 at 17:33:32:

I have had some experience with a B&S gear cutter. There is a change gear chart (which I don't have now) that shows change gears vs teeth to cut. The cart is useful since the change gears supplied originally with the machine are limited in quantity/tooth sizes.

We used to cut ratchets up to 225 teeth. It's particularly useful to cut asymetrical tooth forms as long as you don't need high accuracy and fast production. You do need to have milling cutters ground to create the tooth space needed.

For gears, the tooth form is involute in shape, and ideally would differ for each pitch and number of teeth. However, to limit the number of cutters required in a shop, involute cutters are made to cut a range of teeth in a specific pitch.

If you have specific questions, maybe we can be of help.


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