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Custom Gear Involute Cutter

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md0501

md0501

Mechanical
Joined
Aug 4, 2021
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5
Location
US
Hello,

I am looking to get a custom involute gear cutter made for a 0.4 module, 20PA tooth profile. I have a local shop that can do tool grinding, but needs exact geometry for the cutter in order to make it. Is there a way to find/calculate what this geometry would be for the cutter? Or if anybody knows a good source to buy 20PA 0.4 module cutters that would also be appreciated.

Thank you in advance!
 
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md0501,

Go to Google and look for "gear hobs 0.4 module". Is there any reason you cannot subcontract this to someone who has the tooling?

--
JHG
 
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I have looked for the hobs online quite a bit but they are difficult to find except on ebay, which I question the quality a little bit.

I would prefer to subcontract but with the lead times I have received so far it is much faster to do with my company in house machine shop if we can get the tooling quick
 
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You can make them from a straight-sided tooth. I assume you are looking for a form tool that is suitable for some small range of teeth in a circular gear and used with an indexing head. It's more complicated with a straight sided tooth; one coordinates the rotation of the blank with side motion of the straight-sided tooth.
 
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What sort of lead times? A hob has quite a few steps - rough cut blank, harden, finish grind and optional coating.
 
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for cutting tools go to broach masters, Gleason cutting tools, koepfer , do search for custom made hobs and shaper cutters. ask for expedited charge
 
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