The rake angle of a cutting tool is 15°, shear angle 45°

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The rake angle of a cutting tool is 15°, shear angle 45° and cutting velocity 35 m/min. What is the velocity of chip along the tool face?

1. 28.5 m/min
2. 27.3 m/min
3. 25.3 m/min
4. 23.5 m/min

Correct Option: A

α = 15°
φ = 45°
V = 35 m/min

V	=	V_c	=	V_s
cos(φ-α)	=	sinφ	=	cos α

V =	V.sinφ	=	35sin45
	cos(φ-α)		cos(45 - 10)

V_c = 25.58m/min