Trochoidal motion in narrow corner

[raysapp]

I've been using trochoidal cut pattern in cavity mill for a few years now and been generally satisfied with the results. Recently though I had to mill out a corner with a narrow included angle and wasn't too happy with how it cut. Rather than gradually reduce the trochoidal width at each pass, it would reduce to a fixed width a cluster of passes (8-20). This meant for the majority of passes the width was unnecessarily narrow, embedding the tool. It may not sound like much but it made a difference at the machine and I had to manually reduce feed. Anyone else have an issue with this?

Ray S
NX 7.0

http://www.appliedprecisionproducts.com

 

[markrief]

The loops should fit better than what is shown in your picture. My picture shows the latest behavior - I assume this is more like what you expected :*)


Mark Rief
Product Manager
Siemens PLM

 

[raysapp]

Mark
That's exactly what I'm looking for. Am I doing something wrong or is that from 7.5?
For what it's worth, I'm attaching the file I sent GTAC the other day.
Thanks

Ray S
NX 7.0
www.appliedprecisionproducts.com

 

[markrief]

That's exactly what I'm looking for. Am I doing something wrong or is that from 7.5?
For what it's worth, I'm attaching the file I sent GTAC the other day.

You're not doing anything wrong - it's fixed in the future. Have GTAC contact me for the PR number - it will save them some work.

Mark Rief
Product Manager
Siemens PLM

 

[raysapp]

Actually, (much to my aggravation) GTAC didn't think it worthy of a PR. But here's the IR# 6270363.

Ray S
NX 7.0

http://www.appliedprecisionproducts.com