Helix and Spiral
You can create a helix or spiral curve in a part. The helix can be used
as a path or guide curve for a swept feature, or a guide curve for a lofted
feature.
To create a helix or spiral:
Open a sketch and sketch a circle. The diameter
of this circle controls the diameter of the helix (except in variable
pitch helixes).
Click Helix and
Spiral 
on the Curves toolbar, or click Insert, Curve,
Helix/Spiral.
Set values in the Helix/Spiral PropertyManager.
Click OK 
.
|
|
|
|
The helix and the sweep profile are on the neck of the
bottle. |
A boss-sweep feature (shown in blue) creates the threads
on the neck of the bottle. |
|
|
|
|
Spiral spring |
Spiral spring in the internal mechanism of a clock |
|
|
|
|
Variable pitch helix |
A cut-sweep feature creates the worm gear. |