Calculation of Compulsory Approach and Drilling Time
Linked Data:B...
Question
Linked Data:
Blind hole 10mm diameter, 50mm deep are being drilled in steel block, drilling spindle speed is 600rpm, feed 0.2mm/rev, point angle of drill is 120
Machining time (in min) per hole will be
A
0.08
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B
0.31
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C
0.44
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D
0.86
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Solution
The correct option is C0.44 Given data: D=10mm,t=50mm,N=600 f=0.2mm/rev