Welcome to the Onshape forum! Ask questions and join in the discussions about everything Onshape.

First time visiting? Here are some places to start:

  1. Looking for a certain topic? Check out the categories filter or use Search (upper right).
  2. Need support? Ask a question to our Community Support category.
  3. Please submit support tickets for bugs but you can request improvements in the Product Feedback category.
  4. Be respectful, on topic and if you see a problem, Flag it.

If you would like to contact our Community Manager personally, feel free to send a private message or an email.

how to make these parts interact with each other in assembly

alan_scottalan_scott Member Posts: 4
im looking for help as to how i can get parts in an assembly to interact with each other, im designing a lock. 

Best Answer


  • philip_thomasphilip_thomas Member, Moderator, Onshape Employees, Developers Posts: 1,376
    @alan_scott - thank you for posting.

    The good news is that the Onshape high level mates and mate relations can define some very complex mechanisms (there are many radial engines for instance in the public documents). That means that for complex lock mechanisms, you will absolutely be able to simulate them.

    What we dont have out-of-box is intermittent contacts. This capability is often associated with a kinematic solution. In the App Store for instance, there are several partners that are likely to perform this type of analysis.

    Sometimes, a very easy workaround is to have several sets of mates (one set active, more or more sets suppressed), to simulate the motion of each component at various stages of the mechanisms operation. That way, the changing contacts are represented by different sets of mates.

    I hope this helps you.
    Philip Thomas - Onshape
  • Paul_J_PremakumarPaul_J_Premakumar Member, Onshape Employees Posts: 151
    If you aren't familiar with assembly mates, here is a starting tutorial : https://www.onshape.com/videos/assembly-mates .
  • alan_scottalan_scott Member Posts: 4
    what mate would be used in the picture above to make the bit that turns in the key hole to move the bolt like when you would open the lock with a key ? 
  • philip_thomasphilip_thomas Member, Moderator, Onshape Employees, Developers Posts: 1,376
    edited April 2018
    @alan_scott - you would have a revolute on the key and a slider on the bolt.
    The last step is a rack_and _pinion mate relation to connect the two.

    To read about Onshape mate relations, google "Onshape relations' and click on the top result :)

    Philip Thomas - Onshape
  • alan_scottalan_scott Member Posts: 4
    excellent im making progress !! i already had the revolute and slider, its just now that rather than the bolt move when the revolute part makes contact with the bolt it turns simultaneous ! ill check out onshape relations as you suggested.
  • alan_scottalan_scott Member Posts: 4
    thanks for your help ive wrote all of this down and will will look into it !
Sign In or Register to comment.