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Mates - How to prevent the last link from moving relative to the previous one?
adam_wroblewski066
Member Posts: 4 ✭
Hi everyone,
I've created a manipulator model in Onshape using revolute mates (from left: column- fixed, link1, link2, link3 - all revolute). I want to make sure that the last link (link3) does not move relative to the previous one (link2) when I move the first link (link1) . How can I achieve this?
Before moving first link:
After moving first link (link1), relative angle between last (link3) and previous to last (link2) part changes, i don't want this kind of behavior, i want them to stay fixed relative to each other.
What kind of mate or configuration should I use to solve this?
Thanks in advance for your help!
Answers
Hello Adam.
'i want them to stay fixed relative to each other' suggests A Fasten mate. However, your use of a Revolute mate in that position makes me think that perhaps I am missing your intent. - Scotty
I'm not sure what your ultimate goal is here, but the I think the best way to do it if you're just moving by clicking and dragging would be to create a fixed mate between them, then suppress and unsuppress the mates as needed.
If you're trying to create an animation there's a feature script that gives better animation functionality by Neil Cooke you might be interested in.
I want the last joint to be revolute, but what annoys me is the fact that the last joint doesn't maintain it's angle relative to previous one (joint2 / part ) when i change position of joint1 (first part).
the poster wants to be able to move one joint at a time, and have all joints further out to remain "fixed" relative to the part that is moving. but all joints must be able to be explicitly rotated at any time.