Involute

$image\small_vid_cam.gif$ Involute Video Illustration

Click File > Open, then choose Involute from the Files of Type pull-down. Choose an .inv file, such as default.inv, set the dialog values and click OK. SURFCAM creates a NURB spline in the shape of the defined involute.

$image\involuteDlg.gif$

Start Radius

This is the radius of the circle used to create the involute. See the Involute Video Illustration.

Start Angle

This is the angle where the involute meets the circle of the specified Start Radius. The following illustration shows a Start Angle of 45.

$image\StartAngleInvolute.gif$

Wrap Angle

This value determines the number of times the involute wraps around the circle to form the spline. The video illustration shows a Wrap Angle of 720, which is two revolutions.

Direction

Set the Direction to Clockwise (CW) or Counter-Clockwise (CCW).

Center X Position, Y Position, Z Position

These coordinates determine the center of the circle used to create the involute.

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