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Author Topic: Lathe Threading With Backlash  (Read 5531 times)

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Re: Lathe Threading With Backlash
« Reply #10 on: August 07, 2007, 09:33:21 PM »
Backlash doesn't get applied until the X axis move is completed, then after a time period has elapsed(Shuttle accel default 1 second) then the backlash is applied.
so editing G76 won't help.  G32 would need a small move of x(.0001)prior to the start of the camfer, then the timer would start(shuttle accel would have to be small 0.0001 sec) then the x move for the taper.   

Wes

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Offline DAlgie

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Re: Lathe Threading With Backlash
« Reply #11 on: August 07, 2007, 09:59:18 PM »
True, and I do that if time permits it (often doesen't!) but the groove is no weaker than the thread that the same tool cut, only difference is that the thread is a helix so has one pitch of the thread higher than the root, but the root is still the stress riser anyway. Main point here is still, not a lot of major advantages to the CNC tool pullout as far as strength, but it is really cool and has a neat appearance.