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IndustryArena Forum > MetalWorking > MetalWork Discussion > Help with using long series endmills

Thread: Help with using long series endmills

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  1. 12-12-2007, 02:28 PM #1
    SteveGT4
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    Help with using long series endmills

    Hi, i have to mill a pocket 80mm deep in aluminium with a 10mm endmill. Is there a general rule of thumb as to how to adjust the speed and feed of a long series cutter compared to a standard lengh? I just managed to snap a brand new reduced shank 3 flute alu geometry endmill using the rpm my cam software gave me which was 6000 rpm (m/c's maximum) and i gradually crept the feed up. It got to probably no more than 100mm per min when the cutter shank broke. I didn't even get a chance to play with the rpm! Any recommendations?
    Thanks
    Steve
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  2. 12-12-2007, 07:35 PM #2
    djr76
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    How about 'Plunge roughing' the cavity out then do the finish pocketing/profiling.
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  3. 12-12-2007, 08:58 PM #3
    dertsap
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    a broken tool wouldn t be caused by the feed or speed ,especially at 6000 rpm . what was the depth of cut and engagement
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