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JeffHoracek1-Visitor
1-Visitor
April 12, 2013
Question

Rectangular helix

  • April 12, 2013
  • 3 replies
  • 1604 views

Guru's


I've a user wanting to create a rectangular helix. I thought the VSS would have been the way to go, and perhaps it still is and I am having tunnel vision and can't think "outside the box" at the moment. Is this possible? I'm think yes, but can't think of how.


WF4 M220


Jeff Horacek

Global CAD Administrator/Design Change Coordinator

STERIS Corporation

5900 Heisley Rd.

Mentor, OH 44060


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3 replies

D
DeanLong1-Visitor
1-Visitor
April 12, 2013

You can make it with a VSS but it's more involved and difficult that just using the helical sweep.


Some of the methods I knowto useVSS for a helical feature are:


1. create the helical drive curve with an equation. Then simply run the VSS thru it.


2. create intersections on a cylindrical solid or surface. Copy the curves using "approximate" instead of "exact" for use as the VSS drive curve.


3. If you have ISDX use "Curve on Surface" thru known points on the center plane(I.E. pitch value of the spring) and then approximate that curve for use as the VSS drive curve.


There are a number of similar variations of the three above. But those above should get you in the gate.

C
cdspk1-Visitor
1-Visitor
April 16, 2013

Helical sweep as surface


Rectangular extrude surface along axis of previous feature


Create intersect curve between the two


Use curve as sweep profile


See attached image



Cheers, Sean

C
cdspk1-Visitor
1-Visitor
April 16, 2013

Whoops! images where in the wrong order in my attachment.

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