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Can i constrain assemblys to certain values?

stefan_nilssonstefan_nilsson Member Posts: 13 ✭✭

I’m working on a articulated dummy/mannequin that i want to use for sizing other designs so that they will be somewhat ergonomic. I found a model of a dummy, but when making the assembly everything moves uncontrollable. There are a lot of ball mates that all seem to influence each other so its very hard to set a desired body position. Is there a way that i can control the movement of the joints other than fixing them? Like a variable table would be nice

Answers

  • glen_dewsburyglen_dewsbury Member Posts: 941 ✭✭✭✭

    You can fix Body Type with a configuration table. Use that to set discrete mate positions.

  • stefan_nilssonstefan_nilsson Member Posts: 13 ✭✭

    A little more detalj would be helpful. But thank you, this seems lika valuable knowledge so i will have to learn this

  • Matt_ShieldsMatt_Shields Member, Onshape Employees Posts: 553

    Ball joints can have limits.

    Also, you can lock subassemblies.

  • stefan_nilssonstefan_nilsson Member Posts: 13 ✭✭

    Neither of this answers my question. A limit in a ball joint mate limit limits the conical angle, not a single degree of freedom and is og nu use whatsoever. Dividing the whole body into subassemblies would make the workflow even more awkward than fixing one limb at the time. Maybe i was unclear in my post

  • glen_dewsburyglen_dewsbury Member Posts: 941 ✭✭✭✭

    Would you post a link to your document? That may simplify the description of what you're doing.

  • martin_kopplowmartin_kopplow Member Posts: 691 PRO

    Glen's proposal of using a config table isn't a bad one. If you want to seperately configure angle and rotation of a limb, a ball joint is, though.

  • eric_pestyeric_pesty Member Posts: 2,070 PRO

    If you split things up into sub-assemblies, you could also leverage "named positions" together with the "lock/follow position" function.

  • stefan_nilssonstefan_nilsson Member Posts: 13 ✭✭

    I will have to spend some days on learning assembly configurations.

    Here is a link to the document, its work in progress:

    https://cad.onshape.com/documents/25dc075efed784c74c114f72/w/a8c381463c2bed26ca8f65ef/e/555a41925956211a048d2493?renderMode=0&uiState=67c2d849db1820773d7a2ce9

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