The velocity (in m/min) with which the chip flows on the

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Direction: A φ 40 mm job is subjected to orthogonal turning by a + 10° rake angle tool at 500 rev/min. By direct measurement during the cutting operation, the shear angle was found equal to 25°.

The velocity (in m/min) with which the chip flows on the tool face is

1. 32
2. 63
3. 22
4. 27.5

Correct Option: D

D = 40 mm
α = 10°
N = 500 pm
φ = 25°

V =	πDN	=	π × 40 × 500
	1000		1000

V = 62.8 m/min

V_c	=	sinφ
V_s	=	cos(φ - α)

V_c =	62.8 × sin 25
	cos(25 - 10)

V_c = 27.5 m/min