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xPR1MUSx10-Marble
10-Marble
October 23, 2025
Question

Concentric/Coincident constraint for Coil Spring Axis?

  • October 23, 2025
  • 3 replies
  • 477 views

I'm putting a captive screw with compression spring in one of my assemblies. The coil spring doesn't have any 'cylindrical' features or surfaces. I made a central axis, but when I try to constrain the Spring Axis to the bolt cylinder surface, it places the axis coincident/tangent to the surface, not concentric.

 

I always have the option to constrain Front & Right planes, but I would like to figure out how to get concentric mates with an axis.

3 replies

tbraxton
22-Sapphire II
tbraxton22-Sapphire II
22-Sapphire II
October 23, 2025

One option is to add a central axis to both components and then align the axes when assembling to get what is needed.

    KenFarley
    KenFarley21-Topaz II
    21-Topaz II
    October 23, 2025

    I do exactly what @tbraxton  recommends - I have an axis concentric with the bolt, hole, or whatever I'm trying to line the spring up with.

    I also have datum planes in the spring model that let me use its ends to position bolts, when the need arises.

    A
    anursinghCommunity Manager
    Community Moderator
    October 27, 2025

    Hi @xPR1MUSx,

     

    I wanted to see if you got the help you needed.

    If so, please mark the appropriate reply as the Accepted Solution. It will help other members who may have the same question.
    Of course, if you have more to share on your issue, please pursue the conversation. 

     

    Thanks,
    Anurag 

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