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.6 z2 F5 j5 h. e {5 m
Note: CS=80% [) ]8 Q; Y( _3 P+ v
3 T5 n9 M2 q5 R D2 ]RPM 1/8= v4 J! s( ~$ n8 ?5 ~+ `6 Z
RPM 3/4=. n5 z4 t) \8 ? K
4 C. W) v: M0 m( \' C" g
Thanks a lot.
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发表于 2007-11-24 20:29
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