VIDEO of cutting a thread on 4th axis of my Bridgeport Interact CNC mill with LinuxCNC

Ignoramus3931 · 2013-03-22T00:45:47+00:00

My guy asked me to cut a 1mm pitch thread on a custom shaft. I could not do it on my lathe, so I finally bit the bullet and wrote a subroutine to do threading with my 4th axis rotary table. I use a 60 degree chamfering end mill. Now I can cut any thread, any pitch, right or left handed, and if the thread is very coarse, the subroutine does it in several passes. I am afraid that it does not create a 100% correct thread geometry, but I hope that I can do enough things with it to be useful with some adjustments to diameter. i

Mar 22, 2013 21 Replies

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Ignoramus7568 13 years ago

Sure, it could not care less if the step is 1 revolition per 9 inch or

0.09 inch. It does the same thing. By default, it calculates depth based on 60 degree thread profile, but you can specify your desired depth. i

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pyotr filipivich 13 years ago

Yep, heard of a guy who was buying stuff for a dollar and selling it for two dollars, sometimes three. He said it was amazing how that one to two percent markup really added up. I decided not to enlighten him...

-- pyotr filipivich "With Age comes Wisdom. Although more often, Age travels alone."

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