Need Help with Coaxial Constraints

[mcdesign334]

Hi guys,

I'm new to alibre. Is there a reason why I am unable to have to have multiple coaxial constraints. I want to constrain the center hole of the flange bearing with the block hole and the little holes for the fastener to prevent rotation. I keep getting overconstrained errors whenever I try to constrain any other way. I have tried axis and plane constraints as well off the reference geometry.

 

[HaroldL]

If you want to constrain the block hole and a fastener hole with coaxial constraint on each hole they need to be exactly the same distance apart in each component.
However, you can apply a limit to one of the constraints, likely the fastener hole constraint, and that may give you acceptable results.

 

[mcdesign334]

Thank you HaroldL! I ended applying the limits and it gave me good results.

 

[pottersfriend]

Just adding my 2 cents guess/comment. If you downloaded the bearing block, and looks like you may have gotten if from grainger, the file may not be exactly the same dimensions as the holes in your plate. I'm guessing it's probably off by a minute amount. Also, possibly different modeling units, metric vs inch could be causing it to be off as well. Again, just guessing.

 

[NateLiquidGravity]

Keep in mind when using limits that the more limits you add the more they increase the computational time for the models.