Question

M allu lile uut ylelus a eru um tillkless - U.U ml. Calcule alle sue al palle angle and (b) the shear strain for the operation. In an orthogonal cutting operation, the tool has a rake angle = -5°. The chip thickness before the cut = 0.012 in. and the cut yields a deformed chip thickness = 0.028 in. Calculate (a) the shear plane angle and (b) the shear strain for the operation.

Answer 1

Given that, in an athogenal operation Rake angle (20) = -5° Chip thickness before the cut (to) -0012 in After Deformed chip thickness (c) = 0.028 in (a) To find the stuar plane angle chip thickness (F) - Se cond = 0428 Shear migle is defined as the angle made hy shear plane to the cutting Velocity vetar. COSYO ... Tan (Po) = &- sinto so = shear angle Bo = tom L. & sinto) COSES ) 0.428- sine tam = tan(1-954)

Shear plane angle (Pa) = 6265"} -) To find shear strain are cotat tompe From Mohr circle E- cot Bot tom (Bonyo) € is shear strain e - cot(626) + tom (62.65-6-5) scot (6265) + tom (67.65) = 2.949 li shear strain (E) =2949