Need Help!- TL-2 threading code

[Greg Benedict]

Somewhat unrelated to the topic, but if I want to shift all my Z offsets 1/2" closer to the spindle face I would enter -.500 in the G54 Z offset column, correct? Right now X & Z are set to 0.0.
Also if I were to enter .002 in the X wear of tool 3, would it change the dia. of the part by .002 or .004?
Thanks, Greg B.

[Geof]

Yes, -0.5 in G54 moves everything toward the chuck 0.5.

Does wear apply to radius or diameter? I think it is probably diameter because the X offset values are diameter.

[Greg Benedict]

Thanks, Geof,
I was pretty sure about the G54 bit.
I'll try tweaking the X wear on tool 3 a little at a time and see how it turns out tomorrow.
Greg B.

[Geof]

Originally Posted by Greg Benedict .....I'll try tweaking the X wear on tool 3 a little at a time and see how it turns out tomorrow. Greg B.

I have a thought here: Are you using tool compensation? Does the X wear do anything on a lathe when you are not using compensation?

I know on a mill that compensation has to be active for wear to work but on a lathe I so rarely use either compensation or wear I don't know if it is the same. And I am too lazy to pick up my manual and try to find it.

[Greg Benedict]

Looks like you don't need comp turned on to use the wear column. I changed the X wear by .010 and got a part that was .010 bigger on the dia. Entered a -.004 and got the part - .004.
Anyway, thanks to all the help I've gotten, I was able to accomplish this on Saturday morning.




So, I'm pretty happy. But I know this is just the tip of the iceberg, so to speak.
These are relatively simple parts, I know. But for the first thing I've done on a CNC lathe.....well you know.
Greg B.