A 6.5 inch dia shaft is to be machined on a TURNING CTR to 4.5 inch dia in 4 equal cuts. If CONSTANT CS is selected calculate the RPM at the beginning of each cut. ' \7 `3 u' Q& f4 eNOTE: CS=1000 ft/min for carbide insert used. & k7 u5 U7 s& s! a0 N a" N+ F( k' w3 @) l3 S
so RPM(1)= . s/ s! {1 }# v) D
RPM(2)= & ^( H: a, P, q RPM(3)=& o; l" S9 e* W% {; Q
RPM(4)=/ Z% T* N7 X9 t6 j4 E; \' |- D, F$ j3 `
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发表于 2007-11-23 22:20
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