Question

2. Calculate the shaping time for a workpiece length 600 mm and width 150 mm using a feed rate of 0.5 mm/stroke. The height of the part was 60 mm which was reduced to 50 mm at a maximum depth of 2 mm, the cutting speed was 30 m/min and V:V, was 1:2.

Answer 1

The shaping time required for the workpiece is 45 min.

Given, 2 mm = 600 mm feed rate = 0.5mm/ stroke b = 150 mm depth of cut h = 60 mm height to be reduced = 10mm x=30m/min 30 ml = 0.5mls - 500 mms K 1/2 V = 20 = 1000 mm/s 60 • Time for one stroke e te 600 (too +1 . 1.8 sec • Total number of stroke required width Х height to be reduced feed rate depth of cut 150 ed ) - 0.5 1500 strokes - Shaping time = (time for one stroke) x (total strokes) 1.8X1500 - 2700 sec 45 min