Welcome to the Onshape forum! Ask questions and join in the discussions about everything Onshape.
First time visiting? Here are some places to start:- Looking for a certain topic? Check out the categories filter or use Search (upper right).
- Need support? Ask a question to our Community Support category.
- Please submit support tickets for bugs but you can request improvements in the Product Feedback category.
- 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.
Options
Big troubles when assembling parts with tangent mate
félix_balmonet014
Member Posts: 2 EDU
in General
Hi all,
I am currently working on a project for my garage door needing a wheel and a kind of rail for the path of the wheel.
In order to simulate the overall assembly I used (for the first time) the tangent mate relation. However it is a complete failure : the wheel just make weird rotation without even touching the surface path i asked...
Here is a link of a simplified assembly I made where the same problem occurs. After having followed several tutorials i wonder where is my mistake !
https://cad.onshape.com/documents/78a569978145d858f34b2881/w/d9fe6238c4b9a6639786b1d2/e/1f420cd7e15062354ff0e717?renderMode=0&uiState=6159828c89f5071a5166c5df
Have you ever encountered this kind of problem ?
Cheers,
Félix
I am currently working on a project for my garage door needing a wheel and a kind of rail for the path of the wheel.
In order to simulate the overall assembly I used (for the first time) the tangent mate relation. However it is a complete failure : the wheel just make weird rotation without even touching the surface path i asked...
Here is a link of a simplified assembly I made where the same problem occurs. After having followed several tutorials i wonder where is my mistake !
https://cad.onshape.com/documents/78a569978145d858f34b2881/w/d9fe6238c4b9a6639786b1d2/e/1f420cd7e15062354ff0e717?renderMode=0&uiState=6159828c89f5071a5166c5df
Have you ever encountered this kind of problem ?
Cheers,
Félix
0
Comments
I have found the tangent mate a bit of a challenge to figure out and it can also behave strangely at times such as flipping sides when closing and reopening a document. I usually try to avoid using it if possible, however, it can be a powerful tool at times. We are not able to copy your document to play with but I would try adding a parallel or planer mate with a few limits, I think the best way to use tangent is to find ways to mate and limit motion to something close to what you want and then add it at the very end to get your final realistic contact motion. Hope this helps.
They can be a bit tricky, the best way to create something really stable is to use edges and curves. Here is a simple example: https://cad.onshape.com/documents/54c1dfb1caa01459714b8f2c/w/0da851befd6e0c6c5be23c72/e/0dcdbb5e428891b09f1efe86
As you get better with it, there are some awesome things you can do such as this energy chain: https://cad.onshape.com/documents/eb014ae849908dd1567b654c/w/ac8e8094f75706347ddea16d/e/ea97c3a384c30531e46e0a8e
Hope these examples give you insight!