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Help needed with setup/Rigging with Constraints
Posted: 27 December 2012 11:04 AM   [ Ignore ]
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I have a scene with a number of Hydraulic Cylinders on angles, I’m having problem keeping the Rams in line with the Cylinder Barrels. I have tried using the Slider Constraints but they only work on the axis (90 degrees), I need then to be easily changeable because they’re in different positions with the animation/scene.

Thanks,

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Posted: 27 December 2012 11:42 AM   [ Ignore ]   [ # 1 ]
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For this example, I will refer to a base and an arm, and the barrel and ram are interchangeable to meet your needs.
* Parent the arm to the base with a rotation constraint (Move hotspot to the pivot point.)
* Parent the barrel to the base with a rotation constraint (Move hotspot to the pivot point.)
* Parent the piston to the arm with a rotation constraint (Move hotspot to the pivot point.)
* Add the Point At modifier to the barrel, set the target to the ram and adjust the axis options as needed.
* Add the Point At modifier to the ram, set the target to the barrel and adjust the axis options as needed.

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Posted: 27 December 2012 04:02 PM   [ Ignore ]   [ # 2 ]
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Isn’t that just a Shaft constraint? Parent the ram to the barrel, apply a shaft constraint to the ram’s motion, and you should have it.

I think….

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