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Question

Linked Data:
A ϕ40mm job is subjected to orthogonal turning by +10o rake angle tool at 500rev/min. By direct measurement during the cutting operation, the shear angle was found equal to 25o.

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


A
32
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B
63
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C
22
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D
27.5
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Solution

The correct option is D 27.5
D=40mm,α=10,N=500rpm,ϕ=25o

Cutting velocity:
V=πDN1000=π×40×5001000
=62.8m/min

VcV=sinϕcos(ϕα)

Velocity of the chip:
Vc=27.5m/min

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