A 1/8 inch pilot hole followed by a 3/4 inch dia hole to be drilled in end of a 3.875 inch dia shaft.Calculate the RPM of each drill. 1 Y" {, e* ^- W: z/ ]& n( M5 mNote: CS=80! i) x9 O; r$ t, u
: V. o5 q, r: }6 LRPM 1/8=5 a5 Y- r& v' f1 n" ~
RPM 3/4= & @4 l" z/ b0 C# N- s7 h $ B" N' O7 g7 nThanks a lot.
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发表于 2007-11-24 20:29
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