G92 or G76 thread gave Step at End any solution

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aamir
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G92 or G76 thread gave Step at End any solution

Post by aamir »

Hello Guys
My part didn't have a under cut at Z-10mm when thread End it made a round step which not required .
Also we didn't want any undercut all
IMG-20221119-WA0053.jpg
IMG-20221119-WA0054.jpg
Any possible solution?
Thanks
Aamir
tblough
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Re: G92 or G76 thread gave Step at End any solution

Post by tblough »

If you are using Intercon, reduce the chamfer amount. See page 98 in the Lathe User's Manual.
Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
aamir
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Re: G92 or G76 thread gave Step at End any solution

Post by aamir »

Person use G code only .
cncsnw
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Re: G92 or G76 thread gave Step at End any solution

Post by cncsnw »

See Parameters 240 and 241 in the lathe operator's manual.

Try something between 0.2mm and 0.4mm for P240.

Optionally, change P242 to 60 degrees, and include a chamfer out of the thread at a 45 degree angle (see Parameter 49, and/or the 'P' value on the first line of a 2-line G76 cycle).
aamir
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Re: G92 or G76 thread gave Step at End any solution

Post by aamir »

Ok i will try But in G92 has any possibility for chamfer at end ?
cncsnw
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Re: G92 or G76 thread gave Step at End any solution

Post by cncsnw »

See G92, on page 183 of the v4.20 lathe operator's manual.

G92 uses Parameter 49, just like G76 does.

Set Parameter 49 = 1.0 for a one-turn chamfer out at the end of the thread.
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