Problem with tangent mate

Dmitry_Golovkin

Hello dear community,
In folowing design it does not animate correctly.
For some reason the pin going only by half of the ring.
Any advice wold be appriciated.
https://cad.onshape.com/documents/49687b05001ac414fda4f774/w/93dd33c533a805ec3e93e60b/e/c9d4c909bfe4c023123940b9

andy_morris

Hey Dmitry,
I see the problem is a bug of assembly motion that is jumping to an alternative tangent solution. I tried various alternative mate schemes including deselecting limits and using a Fastened instead of Slider, but I get the same issue.
I will open up a support ticket for this.

andy_morris

Hey Dmitry,
I see the problem is a bug of assembly motion that is jumping to an alternative tangent solution. I tried various alternative mate schemes including deselecting limits and using a Fastened instead of Slider, but I get the same issue.
I will open up a support ticket for this.

Dmitry_Golovkin

Thank you Andy,
Will be wating for the solution.

NeilCooke

I presume that pin is spring-loaded? Onshape cannot simulate a spring force so I believe that there will always be multiple solutions and therefore not solvable.

Dmitry_Golovkin

NeilCooke said:

I presume that pin is spring-loaded? Onshape cannot simulate a spring force so I believe that there will always be multiple solutions and therefore not solvable.

It's not gonna be spring loaded. Actually it must be wheel instead of pin. Two shafts are not parallel so I made a slider mate to pin be able to stick to sliding surface otherwise in higest or lowedt position the pin could be too long or too short.