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GATE Mechanical Engineering (ME) 2022 Shift 2 Solved Paper

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Question : 54

Total: 65

A straight-teeth horizontal slab milling cutter is shown in the figure. It has 4 teeth and diameter (D) of 200 mm. The rotational speed of the cutter is 100 rpm and the linear feed given to the workpiece is 1000 mm/minute. The width of the workpiece (w) is 100 mm, and the entire width is milled in a single pass of the cutter. The cutting force/tooth is given by F = Kt_cw, where specific cutting force K = 10 N/mm², w is the width of cut, and t_c is the uncut chip thickness.
The depth of cut (d) is D/2, and hence the assumption of ‌

<<1 is invalid. The maximum cutting force required is ______ KN (round off to one decimal place).

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