Question 2 1 pts An 8 in. diameter grinding wheel, 1 in. wide, is used in a surf

Question

Question 2 1 pts An 8 in. diameter grinding wheel, 1 in. wide, is used in a surface grinding operation performed on a flat piece of low carbon steel. The wheel is rotating with a surface speed of 5,000 fpm, depth of cut of 0.002 in./pass and cross feed (w) of 0.15 in. The reciprocating speed of the workpiece is 20 ft/min., and the operation is performed dry. Letting C-300 per in2 and the ratio of chip width to average undeformed chip thickness equal to 20, estimate the undeformed chip length. O.1065 in. 0.0265 in 0.1265 in. 0.2265 in 0.0565 in. Question 3 1 pts Using the information in Question 2, estimate the undeformed chip thickness. 2.2 x 10^-5 in. O2.05 x 10-5 in. 2.50 x 104 in. ? 1.90 x 10-4 in. O 2.05 x 10A-4 in.

Explanation / Answer

2) Undeformed chip length, l=sq.rt(Dd), where D= 8 in(Diameter of wheel) and d=0.002 in/pass. Substituting we get l= sq.rt(8×0.002)=sq.rt(0.016)=0.1274 in

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