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Controlling Rotary Direction

Solution Partner Phenom Solution Partner Phenom
Solution Partner Phenom

Hi All,

I am working on a post for a 5 axis D-head, A-table machine.

The program drills many holes at an angle while rotating the table.

I had to use the rotate ude to get it to start with the head tipped to the left the way I want.

When I do this though, the A table does not use the shortest solution for the table when it crosses over A zero.

Setting limits on the fifth axis in PB has no effect.

Using the negative A is the shortest solution. Not sure why it uses the other solution.

Suggestions?

 

This what I want.

N609 X0.1207 Y-2.6452 Z0. A1.2521 D-145.0

N610 X-0.1962 Y-2.643 Z0. A-2.0359 D-145.0

 

This is what I get.

N609 X.1208 Y-2.6452 Z0.0 A1.2542 D-145.0

N610 X-.1963 Y-2.643 Z0.0 A357.9622 D-145.0 <- big unwind

And the big unwind only happens when I use the rotate ude.

 

NX 10.0.2.6

LMGi
www.TLMGi.com
2 REPLIES

Re: Controlling Rotary Direction

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

Just to make sure...

What are your "A" axis limits (not sure if 4th or 5th axis)?

If "0 to 360", then I expect what you got

if "-360 to +360" (or other minus to plus values) then I would expect to get what you want.

 

Note if you are doing IS&V, the machine tool definition limits over-ride the post's limits.

Ken

 

Ken Akerboom Sr CAx Systems Engr, Moog, Inc.
Production: NX10.0.3.5 MP16/TC11.2
I'd rather be e-steamed than e-diseaseled


Re: Controlling Rotary Direction

Solution Partner Phenom Solution Partner Phenom
Solution Partner Phenom

Thanks Ken,

You saved the day.

I have +-360 in PB. A is fifth.

It was the limits in the mcf.

Forgot to re-load my machine after changing the limits in the mcf.

LMGi
www.TLMGi.com

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