i need to machine a true oval / eclipse thread insert to be used in a mold to allow for the part shrinking when it cools.
example size 80 x 80.5mm with 2.35mm pitch
it needs to have blind start / finish ends.
ie; position tool to center at depth-feed out to dia-cut thread-feed back to center-retract
how do i go about this in mc x3? (mill level 3, solids)
i can do a 80mm dia single point thread no problem, but i cannot figure out how to do an oval. or wont mc do it?
and no i cannot just do a circle thread and move my centers a bit each way to achieve a butchered oval.
we presently thread mill these on a lathe with a tracing attachment following a saw tooth like profile, lot of stuffing around with setting up.
any ideas? contour with ramp maybe!
thanks