lathe and verify

[Bill Henderson]

Good morning,

 

quick question.

 

First of all I am not a lathe programmer.

 

I was wondering about verify and how accurate it is to a stock model.

 

The program was written by our lathe programmer.

 

I took my gage (part with acme thread) and made that the stock model in verify. when i run it the threads never match my stock model. it is supposed to be a 4.233 TPI (single start) I have tried moving the start position back and forth within a range of .236/4 (90 degrees) and it doesn't work.

 

Should it match up?

 

I looked at the code and the feeds and speeds are correct. I changed the start point with out a lead just to see if it was right.

 

Driving me insane.

 

Any help is greatly appreciated.

[Bill Henderson]

got it.

 

make true threads works.

[uncle_dolan]

Hi Bill, The thread pitch should definitely line up, but I have found in general that lathe verify is not as accurate as mill verify for some reason...could just be my settings! Make true threads option is pretty good, but sometimes takes a long while to process the verification on my work computer.

[Bill Henderson]

Same here. about 3-4 minutes