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.0 p. q; W9 B( ?% n$ p
Note: CS=80 ; Z+ K1 L! o6 O) x) X9 \ 6 i, N d* v( e$ @3 o1 U, ]! \RPM 1/8=! J2 P! A3 K6 i; h
RPM 3/4=& d0 n9 i' Z7 w0 {$ x1 e
% q* v' }2 V& Q1 M& B
Thanks a lot.
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发表于 2007-11-24 20:29
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