how to draw involute in unigraphics nx 8.5 ?

i want this for to draw involute casing.

2 Answer

To create a involute curve in NX, you need to use the Law Curve function. But before creating the law curve, you need to define the expressions that control the curve.

Answered with a tutorial: https://grabcad.com/tutorials/how-to-draw-involute-in-unigraphics-nx-8-5

When creating the expressions, set the number type to "constant". This will prevent a units mismatch in the formulas.