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 Q& L; {* W% h+ I- @/ S, F% m2 A0 q4 I
Note: CS=80 " D( C- O' {8 a+ b1 u. ` # P+ R; Y9 y% d: I7 C+ v' _RPM 1/8=9 ?( v# \% o6 v/ u, \0 s4 K+ Q8 ?
RPM 3/4=" r8 m; M$ @7 o. S( l) `" y
% k0 k7 A. x- Z% K ], }# E
Thanks a lot.
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发表于 2007-11-24 20:29
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