Tangent assy. constraint?

[RyanRun]

I have an assembly, which has an o-ring positioned in a c'sing (Cone shape).

How do I assy the o-ring into the c'sink so that it is tangent to the c'sink surface?

 

[DBezaire]

RyanRun,
2 constraints needed. first constrain the axis of the cone shape to the axis of the o-ring. next constraint will be a surface contact constraint from the cone shape to the o-ring

Regards,
Derek

 

[RyanRun]

I was trying that, but the contact constraint does not work. When I select the contact constraint, I can select the c'sink surface, but it does not allow me to select the o'ring (Created with a revolved circle).

 

[jackk]

you might have to create some 'dummy' geometry to get that second constraint. Something like a plane passing through the centercurve of the o-ring, and a plane passing through the center of the groove.

 

[DBezaire]

Are the parts contextually linked?

 

[RyanRun]

No they are not. I was just hoping that there was some type of tangency constraint I was overlooking. The same o-ring could be used in many different Products.

I just wanted the oring to stay tangent to the c'sink if there were dimensional changes to a part.

 

[DBezaire]

Are you using version 14,15 or 16 of catia?

 

[RyanRun]

Version 14

 

[itsmyjob]

Hi,

On the o'ring create a reflect line with the angle value of the cone. create a point on this curve.
Then coincidence between point and cone surface.

Eric N.
indocti discant et ament meminisse periti ​

 

[itsmyjob]

in fact the point cannot be constraint to the face but the reflect line can be in CONTACT with the cone surface.

Eric N.
indocti discant et ament meminisse periti ​