Parametric Toolpath Help

[gxp131]

I am trying to create one model with maybe 3-4 variables to alter the size and shape of the part. Then insert this part into a machining assembly and when the variables change then the tool paths will regenerate to the new geometry. The problem I am having now is the associativity of the face/planes does not seem to be following the part once the sizes are changed. The tool paths either get missing geometry errors or are not at the correct depths. The initial model that was created has associated CSYSs attached to various point on the model and I have my machining MCSs tied to those CSYSs but NX does not like to maintain the floor offsets when machining the depths. When I pick the floor plane I select the Associative tab and also pick a feature that moves with the part update.

Any assistance would be greatly appreciated. Thanks!!

Glenn

 

[markrief]

Glenn,
I'm not sure exactly what you are picking, or what operatins you are using, but in general this should work. It really depends on what geometry you pick. If you pick things that don't come and go, but are just parametric, it should be fine. For example, pick solids and faces that only move or change shape. If you pick an edge, and the face has fewer edges in the next variant, that edge ID may be gone.

When dealing with planes, you might try creating datum planes and picking those in CAM.

Another idea is to link the whole solid body in the CAM assembly, and then pick geometry on the linked body.

Regarding the depths, id you pick a plane to establish the cut range bottoms, then the cut levels should stay associative. If you just enter a Z, they will not.

If you get stuck, you might let GTAC look at it.




Mark Rief
Product Manager
Siemens PLM