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Mechanism cam liftoff with follow

matthew.tyler
Newbie

Mechanism cam liftoff with follow

I have an assembly involving a cam constrant. I have a cam constraint set which allows two parts which are not initially in contact to follow a predescribed motion once they come into contact during convergence.


NOW


When I move the cam features away from each other I cannot get them to stay in contact during the motion seen in convergence. Instead the "follower" stay completly depressed while the cam rebounds. I do have allow liftoff set since I am not trying to keep them in contact through the whole motion an I do need separation after the follower returns to its initial position.


Any takers?


Mechanisms, WF4


Thanks,


Matt


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2 REPLIES 2

Mechanism cam liftoff with follow

I have a colleague with the following Mechanism problem.

I have an assembly involving a cam constrant. I have a cam constraint set which allows two parts which are not initially in contact to follow a predescribed motion once they come into contact during convergence.

NOW

When I move the cam features away from each other I cannot get them to stay in contact during the motion seen in convergence. Instead the "follower" stay completly depressed while the cam rebounds. I do have allow liftoff set since I am not trying to keep them in contact through the whole motion an I do need separation after the follower returns to its initial position.

Mechanisms, WF4

Thanks,

Matt

Matthew.Tyler@Emerson.com


Mechanism cam liftoff with follow

Without being familiar with the Pro/E cam feature...

Is there any reason for the follower to return? Some spring or
something?
And did you check the timescale? I.e. inertia may be the cause.

Best regards,
Patrick Asselman

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