The Calculation button gives you the results of your design. To optimize
your design, you can choose to generate the correct size of the cam based
on the pressure angle and the radius of curvature.
To generate a cam design based on pressure angle and radius of curvature
1
Click the Calculation button.
To optimize the size of the cam, the pressure angle from your design must
be less than or equal to a certain value (automatically calculated and
displayed at the bottom of the cam Design and Calculation dialog box)
while the radius of curvature must be greater than or equal to a certain
value (automatically calculated and displayed at the bottom of the cam
Design and Calculation dialog box).
2
Click the Results button.
3
In the Geometry tab, click the Center of Cam button.
Two hatched open triangles are displayed on the screen.
4
Respond to the prompts as follows:
Press ESC or ENTER to exit, or [Change center of cam]:
Enter
C
, press
ENTER
Specify center of cam <100,100>:
Press
ENTER
5
Snap to the apex of the triangle that produces a maximal pressure angle
less than or equal to the recommended value and a minimal radius of
curvature greater than or equal to the recommended value.
Exporting Cam Data and Viewing Results
To export TXT cam data for an NC machine
1
In the Cam Design and Calculation dialog box, click Export.
On the File tab, specify:
Export Curves: Inner
Precision [mm]:
0.01
Data Type: File: TXT
Data Type: Coordinates: Polar
356 | Chapter 18 Designing and Calculating Cams
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