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Movement Constraints

Borisw37

New member
I am trying to implement constraints for a ball joint. I was able to "link" two vertices. Is there a way to limit range of motion? (Rotation around the 3 axis if the origin is exactly at the ball joint location)

Longer explanation:
I have two extruded rectangles. One has a hemisphere protrusion in the center the other has a shallower round cavity. The parts pivot in this ball joint. But I do not need for the parts to pivot 360degrees causing interference. Lets say I want one part to pivot +/- 2degrees in x and y and no rotation in the z axis.
 
There may be an easier way but this is howI would do this:


In both of your parts place a point at the center of the ball. Also create an asis thru the point and normal to the vertical to your z axis.


Create a part (call it "Joe" for now) consisting of default datum planesand csys. Create an axis at the intersection of each of the datum planes(3 axis total) and a point on the csys.


Assemble Joe to the base part aligning the points and allowing it to rotate about the axis normal to the z axis. Now assemble your other part to Joe such that the points are aligned and it can rotate about one of the axis not used to assemble Joe to the base.


Create your limits and the assembly should be act as you wish.
 

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