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 v/ I& N* k6 P8 R, p, v
NOTE: CS=1000 ft/min for carbide insert used. , T9 d7 F O9 u9 j _0 g - T- p/ `" a! C7 Jso RPM(1)= ; \: E5 n" v9 o! M4 ^* T9 ~
RPM(2)=* f- {) a9 `# j* V7 j
RPM(3)=6 o3 u2 W/ \0 ^1 ~7 x7 c
RPM(4)= $ K e" M" t. }" r; B% j9 ] N& x- P0 u8 x! v
谢谢指教。