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Thread: Specifying tolerances for multiple features in press fit

  1. #1
    Associate Engineer
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    Nov 2020
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    Specifying tolerances for multiple features in press fit

    I have been Googling on how to specify this, but have not been able to find anything - hope someone can help

    A plastic-piece needs to be molded to make a press-fit into a stainless steel tube (handle).
    The tube is oval and asymmetric.

    The press fit is made with stripes that are deformed in the press-process - see the picture, showing the lower shell of te part.

    How do I specify that the outer points of the stripes must be within a specific tolerance?

    Other tolerances in the part are much more relaxed.

    I have some basic knowledge of GD&T, but not enough for this one

    Tank you.

    Best regards,

    Carsten
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  2. #2
    Principle Engineer Cragyon's Avatar
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    Probably using Profile of a Surface/line.

    See: https://www.engineersedge.com/catalo...oducts_id/656/

  3. #3
    Associate Engineer
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    Nov 2020
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    Thank you very much for the suggestion, Cragyon.

    I did look at the profile, but was unsure if it was right.

    If using the profile, how can I call out multiple features together with a sigle annotation?

    It looks like Solidworks has a feature for this, but I'm using Fusion 360 - and again, I haven't been able to find a standardized way.

    Thank you.
    Last edited by carsten_olsen; 11-12-2020 at 09:16 AM. Reason: Messed up copy-paste

  4. #4
    Administrator Kelly Bramble's Avatar
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    Breakout a detail view and indicate the number of occurrences that geometry occurs. Using the same datum order of precedence indicates a simultaneous requirement.
    Tell me and I forget. Teach me and I remember. Involve me and I learn.

  5. #5
    Associate Engineer
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    Nov 2020
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    Thank you very much, Kelly, for your suggestion.

    That was exactly the kind of input I was hoping for.

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