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Internal Thread Milling Issue

2 REPLIES 2
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Message 1 of 3
sherriff1990
294 Views, 2 Replies

Internal Thread Milling Issue

We have a job that has quite a few thread mill holes, i run this job regularly on our machine with a heidenhain controller, and it works perfectly as the controller utilities a thread milling cycle definition. however, today i wanted to run the same job on our haas machine as the other was tied up, i changed the post processor and reposted the code, thinking nothing of it, however the thread milling cycle on the haas uses G code, this meant that once it had thread milled the hole (8mm deep, full thread thread mill tool, plunge to depth, 3 passes around then up and out the hole) it came back up and out of the hole without moving back to the center of the hole and so dragged the tool up the side of the thread, scrapping the part.

there are no options i can see to define the lead out radius or a lead to center option when using the thread mill cycle. i don't want to have to thread mill all of the way  up and out of the hole.

is there a way around this?

2 REPLIES 2
Message 2 of 3

Choosing the thread option in the 2D dropdown gives me the option to choose "lead to center"

  Carl

 

Thread mill.JPG

Message 3 of 3
seth.madore
in reply to: sherriff1990

What @hooverwelding  says is correct. Lead To Center will prevent your issue from happening. Are you using that thread cycle or the one buried in the drilling cycle?

The drill cycle thread mill does NOT have that option


Seth Madore
Customer Advocacy Manager - Manufacturing

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