Q.4 (i) Find the time required for taking a complete cut on a plate 600 × 900 mm², if the .cutting speed is 9m/min. The return time to cutting time is 1:4 and the feed is 3mm cutting speed is 9m/min. The return time to cutting time is 1:4 and the feed is 3mm for the shaper. The clearance at each end is 75 mm. (ii) A hole of 30 mm diameter and 75 mm depth is to be drilled. The feed is 1.3 mm/rev and the cutting speed is 62 m/min. Assuming tool approach and tool over travel as 6 mm. Calculate : (a) Cutting time and (b) Material removal rate

Q.4 (i) Find the time required for taking a complete cut on a plate 600 × 900 mm², if the .cutting speed is 9m/min. The return time to cutting time is 1:4 and the feed is 3mm cutting speed is 9m/min. The return time to cutting time is 1:4 and the feed is 3mm for the shaper. The clearance at each end is 75 mm. (ii) A hole of 30 mm diameter and 75 mm depth is to be drilled. The feed is 1.3 mm/rev and the cutting speed is 62 m/min. Assuming tool approach and tool over travel as 6 mm. Calculate : (a) Cutting time and (b) Material removal rate

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter3: Job Planning, Benchwork, And Layout

Section3.4: Saws And Cutoff Machines

Problem 2RQ: The vertical band saw is particularly useful, as it can be used to make straight cuts as well as...

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