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Threadmill double start acme threads.... OD and ID

Legend
Legend

Never cut any acme threads in my life. Any trick to this? thread is 2 starts...how does NX support this?

 

NX11.0.1
14 REPLIES

Re: Threadmill double start acme threads.... OD and ID

Legend
Legend
Bump. Anyone done this?
NX11.0.1

Re: Threadmill double start acme threads.... OD and ID

Esteemed Contributor
Esteemed Contributor

Just define the tool correctly, and you get acme threads.

I don't know if the depth per pass settings would change for Acme vs. "standard" (60 deg) threads.

 

I'm currently in NX7.5, so I see "number of starts" right on the lathe thread dialog.

Note NX offsets the start point for each pass - visible when you generate/replay the path.

If you want to use a cycle that supports multiple lead threads (e.g. Siemens CYCLE97) then you may have to use a UDE or ??? so NX doesn't do that offset.

Ken Akerboom Sr CAx Systems Engr, Moog, Inc.
Production: NX10.0.3.5 MP5 + patch/TC11.2
I'd rather be e-steemed than e-diseaseled


Re: Threadmill double start acme threads.... OD and ID

Legend
Legend
I was messing around with threadmillin in nx10 and did not see anything about multiple starts. Maybe I missed it as it was like 1am. I will try again today.
NX11.0.1

Re: Threadmill double start acme threads.... OD and ID

Esteemed Contributor
Esteemed Contributor

oops... I saw "thread" and missed "mill"

I was describing turning threads...Doh!

 

 

Ken Akerboom Sr CAx Systems Engr, Moog, Inc.
Production: NX10.0.3.5 MP5 + patch/TC11.2
I'd rather be e-steemed than e-diseaseled


Re: Threadmill double start acme threads.... OD and ID

Valued Contributor
Valued Contributor

It may not be the ideal solution but you could program two identical threamilling operations and then transform one by 180 and 1/2 pitch to do thejob.

Re: Threadmill double start acme threads.... OD and ID

The good news is that Multiple Starts is in Thread Milling in NX 11:

thread_mill_multi_start.jpg

To do it now with a single tooth tool, you need 2 operations. You could transform as described above, or make 2 operations, and clock the CSYS for one 180 degrees.

With a multiple tooth tool, I think you could do it with one operation, with the lead at 2x the pitch on the threading tool. 

 

Mark Rief
Retired Siemens

Re: Threadmill double start acme threads.... OD and ID

Valued Contributor
Valued Contributor
Looks good!

Re: Threadmill double start acme threads.... OD and ID

Legend
Legend

This is what I was trying to get across in my first post..

 

There is no way to really know the results of the operation until you cut one because NX doesn't use the threadmill shape...

2016-04-22_0935.pngtool.jpg

NX11.0.1

Re: Threadmill double start acme threads.... OD and ID

Valued Contributor
Valued Contributor

NX11?  That's too bad.  We've been manufacturing double and triple lead threads (milling internal threads) for over 10 years now.  Planning on switching to NX10 soon.

 

Can NX10 thread mill tapered thread?  Not pipe thread, but user defined tapered thread?

 

I have to use my home-made excel spreadsheet or knock on another programmer's door who uses SolidCAM for a tapered thread output and paste it in my NX operations.

 

Jerry M.

NX8.5 - hoping to update to NX10 soon!

 

 

 

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