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ptc-43929501-Visitor
1-Visitor
April 10, 2014
Question

multiple workpieces

  • April 10, 2014
  • 2 replies
  • 3088 views

Hi,

we started using more than one workpiece in NC-complete, to program multiple operations in one cam file. but the material removals sometimes cannot handle this correct, but for example after a restart everything is back ok. but the more sequences there are, the more these material removals go in error.

does anyone have any experience with using multiple workpieces?

Greetings,

Arno

    2 replies

    P
    ptc-43929501-VisitorAuthor
    1-Visitor
    April 10, 2014

    I am talking about Turning operations.

    K
    KenFarley21-Topaz II
    21-Topaz II
    April 10, 2014

    I am currently working with a file that has 6 reference models and a corresponding 6 workpieces. I set them up in an array. I do them all in the same file because they are all part of the same fixture, and the speeds, feeds, filenaming conventions, etc. are the same for each.

    I space the parts far enough apart that any material removal simulation on one of them does not affect the others. Are your workpieces overlapping so that an operation that should only affect one is cutting into another?

    The price I pay for spacing my parts far enough apart to avoid strange "operation on part 1 cuts part 2" stuff is that when I reset the view scale (or when Creo does it itself), things are pretty small. I also have to have a bunch of coordinate systems, at least one, but usually more for each part.

    P
    ptc-43929501-VisitorAuthor
    1-Visitor
    April 10, 2014

    Are you also talking about Turning NC sequences? or milling... because mine are all overlapping, with the same Zero point.

    in the meantime I got an answer from PTC and it seems this is not realy supported to get correct material removals in this situation.

    but Material Removals in general is a feature that needs to be enhanced!

    G
    gkoch1-Visitor
    1-Visitor
    April 11, 2014

    Hello Arno,

    I read the email you received from PTC Support (no I am not from the NSA, but from PTC Support, though not the one who worked on this) and it says that "if you can assemble multiple workpieces, it should be supported".

    Further it asked you to check whether the boundaries of the workpieces overlap, as this could potentially cause material removals to be applied to workpieces other than intended.

    If you observe such failures in MFGs where the boundaries of the workpieces do not overlap, you should attach one of these models for further investigation to the support case.

    If the boundaries overlap in the model, it might still be interesting to further investigate, unless it becomes obvious, how this overlapping relates to wrong material to be removed.

    Currently the TS engineer is waiting for your feedback to the case.

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