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Revision control for injection molded part with inserts

CAD3D_designCAD3D_design Member Posts: 4 ✭
in Using Onshape

Hi all,

I'm new to onshape. How are you revision controlling an injection molded part with inserts? The part will never not have its inserts as the inserts are molded into the plastic in the tool. In solidworks i would do this as a multibody part with a single part number and revision.

In onshape, do you do it as a part and an assembly each with a revision?

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Comments

  • jelte_steur814jelte_steur814 Member Posts: 474 PRO

    This could be done either way. You could include the inserts in a multi-part part-studio.

    adding the inserts in an assembly is perhaps cleaner and neater wow.
    If you or your supplier change some details on the inserts (material, a groove, tolerance or whatever), the IM part wouldn't need updating but a revision on the assembly would be required.

  • EvanReeseEvanReese Member, Mentor Posts: 2,403 ✭✭✭✭✭

    You might also consider using a Composite Part with the plastics and inserts together. Composites let you "group" parts in a part studio and treat them as one thing, without having to make a full blown assembly for them. Perfect for parts made of inseparable components, like overmolds, inserts, weldments etc. If you can get away with it though, I'd consider just a representation of the inserts, not a full-detail model of them (with threads and knurl etc). It'll perform better.

    Evan Reese
    The Onsherpa | Reach peak Onshape productivity
    www.theonsherpa.com
  • S1monS1mon Member Posts: 3,331 PRO

    I would generally prefer a composite part for something like this where it's an inseparable assembly, but a few things which might drive the use of a real assembly:

    1. Do you need to have an exploded view on a drawing to show how they inserts are added?
    2. Do you need to track the number (and type) of inserts per part or overall project in an automated way?
    3. How will the inserts be ordered and tracked? Does your company manage inventory of the inserts or is that a subsupplier issue?
    4. How likely are you to change the inserts (different material, threads, supplier, etc) independently from the molding?
  • CAD3D_designCAD3D_design Member Posts: 4 ✭

    • 1) Currently I have an assembly drawing with a BOM table. It shows the manufacturers part numbers for the inserts. The drawing has an exploded view, although its not strictly needed.
    • 2) Yes, the qty and type of insert needs tracking.
    • 3) The IM part with inserts is purchased from a sub supplier under a single part number.
    • 4) Its not likely the inserts will be changed not I don't want to rule out the option.

    The approach I'm using at the moment is:

    Make the parts and inserts 'not revision controlled' in the properties. Then make an assembly with the IM part and inserts and revision control the assembly only.

    If this is bad idea, let me know!

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