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pmydur1-Visitor
1-Visitor
June 7, 2017
Question

What is the best way to automate and get cut length/perimeter of sheetmetal part?

  • June 7, 2017
  • 4 replies
  • 5874 views

What i mean is is it possible to use map key or tool kit or create a batch file so that whenever i open a sheet metal part and run a command it gives me perimeter of the part. which is basically cut length which will be used to calculate tonnage. Thanks!

4 replies

KenFarley
KenFarley21-Topaz II
21-Topaz II
June 29, 2017

That would be a pretty complicated geometric program, if you think about it. For one, it would seem you'd need to have a flat pattern state that you would subject to the calculation. Then, if you picked one of the "main" faces, you'd have to somehow sort out which of the perimeters to use (i.e. ignore holes, cutouts, etc). Or maybe you want all of those included, since they will also require time to cut...

On another note, I don't see how perimeter of a flat pattern can be used to calculate tonnage, a mass value. I could see how it can be used to calculate cutting time, but that's not the question, or is it?

P
pmydur1-VisitorAuthor
1-Visitor
July 7, 2017

Thanks for your response. You brought up a good point. When i say cut length it includes all outside perimeter and length of internal features. If it is simple part you could do pick individual edges but if it is complicated part then it takes hours to pick edges one by one and get the length of a part. And it is my everyday job to calculate tonnage which needs cut length. I would like to know what are the option we could use in creo or if there is a mathematical way to find the cut length/perimeter of a sheet metal part. I hope i making sense. thanks for your response!

T
TomD.inPDX17-Peridot
17-Peridot
July 7, 2017

Have you considered a subtractive method to calculate your odd shapes?

Still manual, but I'm thinking using merge(subtract) a simple envelope shape with the more complex refined shape.

The difference is a few simple calculations.

J
jhaston-31-Visitor
1-Visitor
June 29, 2017

You can use the measure tool. Measure the surface area and then look at the summary of results ...

 

MeasureSummary.JPG

    R
    rmcboaty1-Visitor
    1-Visitor
    June 30, 2017

    you need to also account for the excess material for penetrating the thickness (with laser), areas, that can't be used etc.

    check sigmanest, pronest, trunest software, if you want really exact results. 

    if you have simple shapes, you can do the layout in autocad and get satisfactory results.

     

    you can get approx. surface area easily, but with complex shapes it won't help you with estimating raw material for larger orders.

    D
    Dan-Baker6-Contributor
    6-Contributor
    August 26, 2024

     

    This is what we use to calculate the perimeter (including cut extrudes) of formed parts. Running Creo 7.0.7.0 

     

    1. Add relation to Sheetmetal Start Models.

     

    PERIMETER=(PRO_MP_AREA - (2*(PRO_MP_VOLUME/SMT_THICKNESS)))/SMT_THICKNESS

     

    2. Mapkey that saves mass properties and regenerates the model to update the Perimeter Value..

     

    mapkey ww @MAPKEY_LABELMass Prop Calc / Regen;\

    mapkey(continued) ~ Close `main_dlg_cur` `appl_casc`;~ Command `ProCmdMmModelProperties` ;\

    mapkey(continued) ~ Activate `mdlprops_dlg` `MASS_PROPS_lay_Controls.push_Change.lay_instance`;\

    mapkey(continued) ~ Activate `mass_prop_dlg` `CalculateMPPush`;\

    mapkey(continued) ~ Activate `mass_prop_dlg` `OkPush`;\

    mapkey(continued) ~ Activate `mdlprops_dlg` `DlgClose_push`;\

    mapkey(continued) ~ Command `ProCmdEnableAutoRegen` 1;~ Command `ProCmdEnableAutoRegen` 0;\

    mapkey(continued) ~ Command `ProCmdRegenPart`;

     

    DanBaker_0-1724691301974.png

     

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