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drCircus
Posts: 1
Registered: ‎01-22-2014
Message 1 of 3 (289 Views)
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sweep error with spiral like 2d Equation curve

289 Views, 2 Replies
01-22-2014 11:20 PM

hi,

 

I made a spiral using the 2D equation curve. The sweep command works with small profiles using the curve as path. However, the required width of profile fails with an intersection error. The attached file demonstrates the problem, it should be possible to use at least a 6.1 mm diameter profile.

 

For simple spirals, i have success with the helix command, but we need to apply a wave pattern along the path. I'm new to inventor.

 

thank you,

daniel

*Expert Elite*
JDMather
Posts: 26,350
Registered: ‎04-20-2006
Message 2 of 3 (273 Views)

Re: sweep error with spiral like 2d Equation curve

01-23-2014 03:46 AM in reply to: drCircus

First,

If your sketch plane isn't perpendicular to the beginning of the sweep path - you don't really know the dimensions of the cross-section of the result.  Think of cutting a cylinder at a slight angle - the profile isn't circular.

 

See if attached gives you some ideas to solve the problem.

Please mark this response as "Accept as Solution" if it answers your question.
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GlennChun
Posts: 115
Registered: ‎06-10-2004
Message 3 of 3 (241 Views)

Re: sweep error with spiral like 2d Equation curve

01-23-2014 10:38 PM in reply to: drCircus

Hi Daniel,

 

See the attached sweep_problem_GC.ipt.  All I did was replace your full-circle profile with two 180-degree arcs.

 

Original (a full circle):

 

orig_full_circ.png

 

Two 180-degree arcs:

 

two_semi_circ_4_9.png

 

Now you can increase the diameter:

 

two_semi_circ_10.png

 

Glenn

ASM Development

 

Related post:  Demystifying Self-intersecting Sweep

Autodesk T-Splines Component Development

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