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circular helical sweep?

circular helical sweep?

circular helical sweep?

(OP)
I was asked to model a part made b y Bal Seal engineering. The part is a spring that is wrapped into a circle with ends welded together. This has acctually completely puzzled me in terms of how to model. I have no idea where to start. I know it is going to have something to do with modifying the profile of a helical sweep i think but any help would be greatly apprietiated.

Kevin
Alcoa Fujikura lmt

RE: circular helical sweep?

You can also create a Datum Curve from Equation and use cylindrical co-ordinates and a sin cos function to create a sweep path.

N=# number of loops in spring
Rmean=# Radius at center of wrapped spring
Rspr=# Radius of spring

theta=360*t
R=Rmean+Rspr*sin(360*t*N)
Z=Rrad*cos(360*t*N)

Use the curve as your sweep path and do an advanced sweep Swp Blend, VSS

Michael

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