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question about end 6 r1. ske(4060)r10

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작성자 Thanasis
댓글 0 조회 322 작성일 22-11-09 23:07

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Hallo. im using the end mills ske for h13 hardened matterial to 48-52 rc and i need a little bit help about speed conditions.
I using mostly 3mm(4flutes) diameters with 6mm sunk diameter for mold cavities(im using step down on z axis) and im really huppy about the results i have(conditions: Vc:76 with fz:0.018, 0.3Z stepdown and 35-40%stepover).
When im using End Mill 6mm with r1 i have the tool damages very fast. I found some recomended speeds and feed for his tool but it gives 1xd with 0.03xD but im using it for cavities with no flat bottoms so im going 0.3mm on Z step down and about 35-40% stepover. the engage is hellical with 50% of the tool helix diameter an 1o ramp angle with 50% Slowdown on feed(the speed is the same) i tryed plenty of thinks to make it work better but im off somewhere for sure. The conditions im using after the test are: Vc:130 wtih fz:0.03, that makes me better results on tool life but far away from the tool life i have with 3mm end mills.