Dimension GD&T of a complex nylon / plastic parts.
Dimension GD&T of a complex nylon / plastic parts.
(OP)
I have a highly complex design that twist, curves, etc.
Let's say its similar to this PC fan http://www.newegg.com/Product/Product.aspx?Item=N8... but on a much larger scale.
Obviously you would want the blade to twist because that would effect airflow.
You would also not want it to lose the radius of the blade or go flat.
You'd want it to fit in the shroud without hitting the motor.
The problem is plastic flexes, relaxes, twists, etc.
We want the shape to be as close as possible to the CAD file.
Any one out there have any suggestions on how to dimension it?
Let's say its similar to this PC fan http://www.newegg.com/Product/Product.aspx?Item=N8... but on a much larger scale.
Obviously you would want the blade to twist because that would effect airflow.
You would also not want it to lose the radius of the blade or go flat.
You'd want it to fit in the shroud without hitting the motor.
The problem is plastic flexes, relaxes, twists, etc.
We want the shape to be as close as possible to the CAD file.
Any one out there have any suggestions on how to dimension it?





RE: Dimension GD&T of a complex nylon / plastic parts.
The mold designer will design for shrinkage.
Chris, CSWA
SolidWorks 14
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RE: Dimension GD&T of a complex nylon / plastic parts.
RE: Dimension GD&T of a complex nylon / plastic parts.
RE: Dimension GD&T of a complex nylon / plastic parts.
A surface profile to the 'blade' portion may well be appropriate.
As to allowing enough clearance you need to work this out, and take into account process capability as to what tolerance you can meaningfully apply and then make sure this still meets function.
Function first, but it still needs to be manufacturable at acceptable cost.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Dimension GD&T of a complex nylon / plastic parts.
http://www.youtube.com/watch?v=YpS5Sxcl4i0
RE: Dimension GD&T of a complex nylon / plastic parts.