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The design of a cam-system must make sure the Follower-Profile (usually a Follower-Roller) in one kinematic-chain is in continuous contact with the Cam-Profile in a different kinematic-chain, at all machine-speeds. There are two(2) designs you can use to make sure a Follower-Profile and a Cam-Profile remain in contact: A.Force-Closed Cam - an external force pushes or pulls th Follower-Profile against the Cam-Profile. For example, a Spring, Air-Cylinder, Gravity, Magnet, ... B.Body-Closed (Conjugate) Cam - a minimum of two(2) Follower-Profiles are in continuous contact with two(2) Cam-Profiles. The design makes sure that the Follower-Profiles cannot move away from the Cam-Profiles. |
Typically, to analyze the Contact-Force and Contact Shear-Stress of a 2D-Cam, you select a 2D-Cam as the Power Source in the Configure Power-Source dialog. However, if two Cams (called Conjugate-Cams) drive one kinematic-chain, you must add and configure a Conjugate Cam FB. Then select you can select it as the Power-Source in the Configure Power-Source dialog. If you do not use and configure a Conjugate Cam FB, the results will not be correct. |
Terminology:
2D-Cam: Work-flow
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You need a Conjugate Cam FB only to do the correct Force-Analysis when a two Cams drive one kinematic-chain.
Preparation: The elements in the model before you do Add Conjugate-Cam FB:
See also Shape of the Follower-Profile. |
STEP 1:Add the Conjugate-Cam FB
The Conjugate-Cam-FB is now in the graphic-area.
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STEP 2:Edit the Conjugate-Cam FB
The Conjugate-Cam dialog is now open. STEP 3:See Conjugate-Cam dialog |