copied surfaces

[DavidB]

Hi all,

 

I have a large surfaced modal.

I copied some surfaces to a different Level for a local toolpath.I then trimed some of the copied surfaces on the New Level.The toolpaths that I already did using the surfaces on the origanal level now need a regen

 

Why?

The toolpaths that need regen are using the origanal surfaces on the origanal Level.

 

Thx

[DavidB]

I ended up unblanking the origanal surface and trimiming that no problems.

I still dont see why if I copy a surface to a different Level edit the Copied surface what has that got to do with the origanal Toolpathed suraface. Because even when you copy a trimed surface it also copy's the Parent surface with it.

 

[Jim at Gentex]

I come across something similar alot b/c I have a 4 1/2 axis trunion type table (90 degrees B+ travel but only -5 degrees B- travel)so I sometimes need to split my part into halves to machine them with 2 separate programs. I usually put half the part on one level and the other half on another, then write the toolpaths as you describe. I found that if I regen the left half toolpath with that level turned off, it will regen and backplot OK but the finished nc file goes haywire with the tool going in a series of small arcs when trying to follow a spline. Apparently you need the correct level turned on...but I'm not really sure why.

 

Anybody care to enlighten us?

 

Thanks.

[Teh Bear without Brains kinda idiot]

I second to admit I meet this .

A good before doing this lock your toolpath from regenerating

[Zero]

quote:

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I copied some surfaces to a different Level for a local toolpath.I then trimed some of the copied surfaces on the New Level.The toolpaths that I already did using the surfaces on the origanal level now need a regen

---

I've never run into this problem and I use copied/xformed surfaces all the time....

 

You mentioned something about unblanking the original surface...This might be the problem, perhaps some leftover associativity hiding in the file somewhere screwing things up..I know it used to happen with offset surfaces.

 

What I do is put the complete model on one level, then make copies of it on different levels and start trimming them. I never use blank when trimming, only delete. If I run into problems, I always have a copy of the complete model on a different level to grab things from.

 

 

quote:

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I found that if I regen the left half toolpath with that level turned off, it will regen and backplot OK but the finished nc file goes haywire with the tool going in a series of small arcs when trying to follow a spline. Apparently you need the correct level turned on...but I'm not really sure why.

---

...this sounds strange as well. This is something else I do all the time, regening paths on levels that aren't turned on, and have never had a preoblem with it...?

[cadist]

quote:

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I've never run into this problem and I use copied/xformed surfaces all the time....

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Me too.

[Jim at Gentex]

quote:

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...lock your toolpath from regenerating

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How to do this, Winnie?

 

Thanks.

[cadist]

Select your toolpath and press "L". to lock the toolpath.

Or

You can right click on your toolpath go to option then locking and select on.

Locking protects your toolpath from being currupted if any related objects like geometry or parameters are edited.

[Teh Bear without Brains kinda idiot]

in operaTION MANAGER MARK OPERATIONS Aand right mouse click options->locking->on

 

 

HTH

rr

[Jim at Gentex]

OK...thanks cadist and winnie!

 

I never noticed that option before. I think it will be quite useful instead of regenerating many paths.

 

*************************************************

Jim teh learning more about MC every day!

[Storkman]

Strange. I also copy surfaces to different levels and haven't had any such problems. The associativity of the toolpath should stay with the original surfaces, and does in my MC. What version are you using?