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.$ ?( ]2 a( |! }" S9 I2 D) A
Note: CS=80 ! a3 h6 _+ C( B ! [! _* }4 x5 L/ J0 w: K/ dRPM 1/8= # u7 c6 K, z7 g- VRPM 3/4=1 A6 D! k1 L- H1 b
! q0 w# u! p& `5 K2 i6 }
Thanks a lot.
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发表于 2007-11-24 20:29
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