Hi, I'd like to have a little help if possible. How can I compress a valve spring in a animation.

Werner

Hi, I'd like to have a little help if possible.  How can I compress a valve spring in a animation.  Sorry if this is a silly question but I've only just started cad. many thanks.

fastwayjim

Just add the spring as the last feature in your model, and constrain it's height to a datum plane. Like this:



Here's the model: https://cad.onshape.com/documents/61172f79358c96abcc746e32/w/2fbcb82d13e727a1932e8919/e/89b66bda9719e9442b65c90c

TimRice

Wow @fastwayjim  very elegant! Over this summer I created a live spring that could be animated in an assembly tab but the hit to performance with such complex mate relations is not worth it in production environments. Take a look at the video here: 
https://www.youtube.com/watch?v=lzSXddwwanc

Werner

Thanks all.

Narayan_K

@ Werner you can't animate a spring you need but you can edit to get compressed and uncompressed position using height and turn option in helix as below,
 

fastwayjim

Actually, you can get a "quick and dirty" animation just by clicking the [final] button in the dialog box like this:

Werner

Thanks for the quick response.
The spring must operate in conjunction with valve and camshaft.in cyl head.If pos?

fastwayjim

Just add the spring as the last feature in your model, and constrain it's height to a datum plane. Like this:



Here's the model: https://cad.onshape.com/documents/61172f79358c96abcc746e32/w/2fbcb82d13e727a1932e8919/e/89b66bda9719e9442b65c90c

TimRice

Wow @fastwayjim  very elegant! Over this summer I created a live spring that could be animated in an assembly tab but the hit to performance with such complex mate relations is not worth it in production environments. Take a look at the video here: 
https://www.youtube.com/watch?v=lzSXddwwanc

Werner

Thanks all.