Sweep a "curve" that defines the centerline of the ball-mill. This will create a sheet body. Thicken the sheet (both directions), using a value matching the radius of the ball-mill. Now, blend the edges of the resulting solid.
The drawing file given by eex23 is very closed to what i want.
However, what happens when i want to stop half way and not mill through the whole cylinder. It would have a spherical indentation on the end of the ball milling operation. The question now is how can i achieve that?
You could manually do that by using two diffirent operations. Do the original operation and stop it halfway. Then where you ended the cut create a plane and sketch the ball end again and revolve it to get the spherical indentation.
Well, this is not related to NX program but i wish to know what's the best practice.
Should we leave the ball end indentation and let the CAM part handle it, or should we model it so that the CAM will follow the part?
Anyone has similar situation as here? The parts i try to model can be accomplish with some simple NC milling moves (4th axis helical moves and some tilted straight line moves) and not Splines curves to mill.
Should we simplify the modelling process, create some helical lines for CAM to follow (tool path) and then use CAM to cut the parts?