circular spring

[Israr]

I need to model a spring but instead of axis of revolution for the helical path I want a circle. I mean helix about a circle.

Please help.

Thanks in advance



Israr

 

[proed]

Check the attached file - it's a circular spring, using a VSS Surface as the path for the protrusion...

Ed

 

[Israr]

Thanks proed,



I haven't done work in surfaces. Can you please help me understand the vss surface step in this part generation.



Thanks in advance.



Israr

 

[Israr]

Thanks proed,



Can you please elaborate the 2nd step, vss surface generation.

I am just a beginner in surfacing.



Thanks in advance.



Israr

 

[proed]

The VSS uses a varying cross-section to create the helix.

I added a line with a fixed length & varying angle.



A new relation controls the angle of the line, eg:

sd5 = 360 * 10 * trajpar



where sd5 is the code for the dimension, 10 is the no. of turns & trajpar is the code for Trajectory Parameter. This varies from 0 to 1 along the length of the sweep.



So - the angle goes from 0 deg to 3600 degrees with a continual twist...

Ed

Also see the article on this site, and others elsewhere...