Why can't I create a mate connector in between these entities?

dawen_cheng

I want to put a mate connector in between these entities in order to make a revolute mate with the center of the cylindrical axle. I was previously using a slider mate in conjunction with a planar mate (mate connector between the angled bar), but the rack and pinion relation doesn't allow me to select slider mates (despite the degrees of freedom being the same as if I had created a revolute mate). I know a similar question has been asked before but that was back in March 2016, I was wondering if a solution had been found to this yet?

dawen_cheng

Never mind I can select a degree of freedom from the slider mate.

But my question about making a mate connector between those entities still stands

Prachi

Interesting. Could have sworn I'd used exactly that in the past but unable to make work today.
Can be done in the part studio but will not work between separate parts in assembly.
Looks like a malfunction that should go through OS support.
https://cad.onshape.com/documents/3eaf3e626a7a392b69bfffc7/w/5dca553846afdb7920f2356c/e/c94ef4e529d2ce1fb31f21d2

romeograham

I just came across this today as well. When using the "Between entities" option for creating a mate connector at the midpoint between two selections, the two selections must be on the same body.
It looks like your selections are on different bodies - which may be why the feature will not complete.

The feature works below because the two selected faces are on the same part.


In your assembly above, could you achieve the same functionality with a Mate Connector at the center of the rods instead of the faces of the green parts at the ends of the rods?

dawen_cheng

romeograham said:

I just came across this today as well. When using the "Between entities" option for creating a mate connector at the midpoint between two selections, the two selections must be on the same body.
It looks like your selections are on different bodies - which may be why the feature will not complete.

The feature works below because the two selected faces are on the same part.


In your assembly above, could you achieve the same functionality with a Mate Connector at the center of the rods instead of the faces of the green parts at the ends of the rods?

No, the mate connector in the middle of the cylindrical rod is already being used. The only other mate connector that is coplanar would be the center of the angle bar, which would not allow for a revolute mate. It's not a huge deal because the rack and pinion relation allows me to select the rotational degree of freedom from a cylindrical mate, but nevertheless allowing mate connectors to be created between two different parts would be extremely useful.

Also, sorry for the plug but is anybody able to answer my related question?
https://forum.onshape.com/discussion/15561/how-do-i-use-mates-relations-to-simulate-rolling-down-a-curved-ramp#latest