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., ?+ f$ h' Z4 Y
Note: CS=80 - z2 L9 g: o9 _9 }0 [- z! b- _% W/ r' J1 M# Z f( C
RPM 1/8= H0 s2 {1 [$ \/ G+ A
RPM 3/4=7 g- F3 c/ e8 O2 t! k4 r$ @
. m( R v+ }8 o8 k8 t
Thanks a lot.
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发表于 2007-11-24 20:29
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