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.# t* }1 ^# r E! B% R" g# N
Note: CS=80 ; V$ A/ O6 C" c8 @' c3 i; A" {% B3 t) j- n
RPM 1/8=5 [# p6 u7 v* }2 ^& h
RPM 3/4= / E9 `% \/ ?5 s" u5 ? 0 _( k7 m- w# i' E- L; O! kThanks a lot.
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发表于 2007-11-24 20:29
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