Got a bad one. Cast Inconel 625, shitty pickling/annealing? from the customer. Has 5 ribs 40mm by 6mm, 45 mm tall, at odd angles and distances, on a 125mm square surface. Need to remove 5mm from each, and all have to be flat to each other within .05mm and 1.6 surface finish. Got the easy part working. parallel and smooth. Roughing sucks. Of course, cycle time is the most important thing, you know the beancounters. Got 10,000 of the buggers. Leaving .01 for finish, to remove the majority of the burr left by the rougher, and keep the finisher living for a while. Using 7 flute coated carbide endmills made by Helical. 80 sfm, .0015"/flute chip load, .19" d.o.c.. Climb milling, with .100" overhang through the rib. Any better ideas, suggestions? Can't let the tool get too dull, as deburring becomes problematic,as they require
- posted
11 years ago