Step 6A.8: Get the 2D-Cam Coordinate Data

The Cam-Data FB is larger than other Function-Blocks.

It has five output-connectors.

We must link it to a 2D-Cam.

The Cam-Coordinates dialog opens.

The image shows the open Cam-Coordinates dialog.

The name of the 2D-Cam shows in the Selected Cam-Track box

STEP 3:

Click to close the Cam-Coordinated dialog-box.

To open the Cam-Coordinates dialog later:

Double-click the Cam-Data FB again,

- or -

See 'How to open a dialog-box'

There are five output-connectors from the Cam-Data FB (R14+) - see image to see the output from each output-connector.

A Profile/Extrusion element is one way we can add mass to a Part. However, the only Profile in the model is the Cam-Follower Roller, which will not have a large mass. Also, it does not represent the distribution of the Mass in the Cam-Follower System. Thus, in this tutorial we will not analyse the Contact-Force or Contact-Stress between the Cam and the Cam-Follower.

We can however, analyse its Pressure Angle and Radius-of-Curvature and Entrainment Velocity

The Pressure-Angle of a Cam is an important parameter analyse. A high Pressure-Angle, means that the force is not transferred from the cam to cam-follower very efficiently. The Pressure-Angle imposes extra forces on the machine elements in the cam and cam-follower systems. The forces increase rapidly once the Pressure-Angle becomes greater than 40° (an arbitrary angle as it depends on what is being driven by the cam). Many designers aim to keep the Pressure-Angle to less than 30°.

See: Cam Analysis and Checklist for further information.

See Tutorial Forces 13 for force analysis.