HOW TO DRAW THE WAVE SPRING/WASHER IN ONSHAPE?

Mavis_Ma

HOW TO DRAW THE WAVE SPRING/WASHER IN ONSHAPE?

NeilCooke

https://cad.onshape.com/documents/5720a838e4b0c6d25c8c1ff1

SethF

This is my first time really looking at a wave spring, pretty cool concept. I don't know how accurate you need to be, but here's my approach:
https://cad.onshape.com/documents/0b4cd4f6d4cc19b700a24ccf/v/5bb761fefd308aa0863bd7c2/e/f76461877ad3eae398f7874f

I haven't made it truly parametric, but if you just make way more iterations of the pattern than you'd ever need before you boolean, then as long as you never go over that number of iterations, you'll be good.

The general idea:

1 - Make a representative cylinder with the correct height/dimension
2 - Make a profile of the wire as if it was unwrapped but still wavy (I used a sketch, an Offset surface, and a pattern)
3 - Use the wrap tool
4 - Thicken that face inward.

I didn't really build in the math for the #iterations_per_rotation variable, so if you change that, it at least breaks the #Gap variable.

SethF

NeilCooke said:

https://cad.onshape.com/documents/5720a838e4b0c6d25c8c1ff1

  
Whoops. Already got a custom feature for it! And only since 2016! I thought I refreshed the page before commenting but alas, I must not have.

Mavis_Ma

SethF said:

This is my first time really looking at a wave spring, pretty cool concept. I don't know how accurate you need to be, but here's my approach:
https://cad.onshape.com/documents/0b4cd4f6d4cc19b700a24ccf/v/5bb761fefd308aa0863bd7c2/e/f76461877ad3eae398f7874f

I haven't made it truly parametric, but if you just make way more iterations of the pattern than you'd ever need before you boolean, then as long as you never go over that number of iterations, you'll be good.

The general idea:

1 - Make a representative cylinder with the correct height/dimension
2 - Make a profile of the wire as if it was unwrapped but still wavy (I used a sketch, an Offset surface, and a pattern)
3 - Use the wrap tool
4 - Thicken that face inward.

I didn't really build in the math for the #iterations_per_rotation variable, so if you change that, it at least breaks the #Gap variable.

 Why can't I open your link?

Mavis_Ma

NeilCooke said:

https://cad.onshape.com/documents/5720a838e4b0c6d25c8c1ff1

 Why can't I open your link?

SethF

Because I see you're a Pro user, my guess is that its a similar issue to the one @NeilCooke helped me with just the other day at the bottom of this post here.

Mavis_Ma

SethF said:

Because I see you're a Pro user, my guess is that its a similar issue to the one @NeilCooke helped me with just the other day at the bottom of this post here.

I see. Thank you!