Direction: In Orthogonal turning of a bar of 100 mm diameter with a feed of 0.25 mm/rev, depth of cut of 4 mm and cutting velocity of 90m/min. it is observed that the main (tangential) cutting force is perpendicular to the friction force acting at the chip-tool interface. The main(tangential) cutting force is 1500 N.
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The orthogonal rake angle of the cutting tool in degree is
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- zero
- 3.58
- 5
- 7.16
- zero
Correct Option: A
D = 100 mm feed, f = 0.25 mm/rev d = 4 mm, V = 90m/min, Fc = 1500 N
α = 0 
