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.+ s1 _# t$ b0 i- f( z0 b
Note: CS=80; t$ `3 N% V2 V6 D, R- X" [2 c
9 X0 N/ \6 ^+ Z& t: ?
RPM 1/8= $ D+ C T( A9 ORPM 3/4= % s% d" m% G* u% k2 S: }. b9 ]- T4 D! J
Thanks a lot.
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发表于 2007-11-24 20:29
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