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

Legend
Legend

My main concern is why does NX not support threadmill shape and verify correctly?


Dennis Rathi
Creations Unlimited
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Re: Threadmill double start acme threads.... OD and ID

Legend
Legend

Well thanks to another member of this forum I was able to figure it out. I guess in a double acme thread your normal "pitch" is not what you actually threadmill. You have to look up the "lead" which ended up being 2x the pitch for a double start.

So the thread is a 2.5 major - .200 pitch which means you cut a .400 pitch twice 180* apart.

The same member also helped me figure out how to 3d verify and confirm I was getting correct results with my acme threadmill operation.

 

 

2016-04-25_1529


Dennis Rathi
Creations Unlimited

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

Valued Contributor
Valued Contributor
Looks great! did you use a drive curve or threadmilling?

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

Legend
Legend

Threadmilling with "Tool Assembly" for 3d verification.


Dennis Rathi
Creations Unlimited

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

Valued Contributor
Valued Contributor

That is great! Will have to look that up!

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