Quote:
Originally Posted by billbo911
OK, next rookie question.
When milling this part, the wall thickness is approximately/ideally .125".
The pocket comes out as expected. The problem is the bearing holes. They will usually have what amounts to a layer of aluminum foil at the bottom.
Here is what I am thinking should be done to prevent this, so please feel free to correct me.
1) Mill this in two separate processes. One for the pocket, one for the holes.
2) On the process for the holes, offset the Z zero by a few thousandths.
What process, or steps would you perform to prevent this?
(Just in case you are wondering, this part is literally just for the sake of learning and has no other purpose.) |
Bore to a slightly deeper depth, if that's possible. or just take the film out with a deburring tool.
It might be due to the wall thickness being slightly larger, like 0.127", or the metal flexing out of the way.