Unfolded spiral torsion spring

3D Design Volume Model
1

Hello

 

I want to make a spiral torsion spring, also called a constant force spring in the sheet metal module of SolidWorks.

The idea is then to unfold it to be able to remove material from the ends.

 

I have no probl_me to make this piece in volume, but it is impossible to convert to sheet metal and even to create this spiral sheet metal from the base.

 

Help-me!


2014-05-15_16h25_24.png
2

Try clicking on one of the end edges (see image) then Insert/Sheet metal/Folds.


screenshot289.jpg
3

Hello

 

In fact, to create it in sheet metal, you would have to keep one of the legs straight for the first step, otherwise SolidWorks won't want to!

4

@Lucas

 

SolidWorks has only been able to handle fully bent sheet metal (i.e. without flat) for a few versions!

1 Like
5

I found a tutorial on the subject:

 

http://www.javelin-tech.com/blog/2010/08/create-a-rolled-component-that-can-be-unfolded/

 

It uses 2 identical sketches, then the transition fold function:

http://help.solidworks.com/2013/french/SolidWorks/sldworks/c_lofted_bends.htm

1 Like
6

I made a piece that looks pretty much ...

 

In fact the spiral is a succession of arcs, but it does it well

 

All that remains is to adapt the number of turns and the pitch (the middle square is a step/4 in size)

 


spring.sldprt
3 Likes
7

in pictures for those whose versions are < 2013


ressort.png
4 Likes
8

Thank you all for your responsiveness! I'm testing this! Thank you

2 Likes