End mills break when making a dog clutch
Pete C. wrote:
Rich Grise wrote:
Pete C. wrote:
So, say I'm making a rectangular hole. Would I cut it with, say, a 1/4"
side mill, and finish up with a broach?
You would certainly need to finish with a broach if you need square
inside corners. If you can live with rounded inside corners of a small
diameter end mill you can certainly do a finish pass with a small end
mill, but it would be insane to try to mill say a 2"x3" pocket with an
1/8" end mill just because you need 1/8" for the finish pass.
At any rate, that is not relevant to Iggy's machining issue, since his
part does not have any inside corners. For his part he should be using a
3/16" end mill or slightly larger, milling the outside diameter, the
inside circular pocket, the radial bulk material removal cuts between
each section of the "crown", and then finishing by milling the exterior
of each "crown" island wedge. The limitation on the end mill diameter is
the spacing between the inner points of the "crown" islands which is
around .2".
Thanks! :-)
Rich
|