A carbide insert tool is used to turn a steel workpart that is 300 mm long and 8

Question

A carbide insert tool is used to turn a steel workpart that is 300 mm long and 80 mm in diameter. The parameters in the Taylor equation are: n = 0.13 and C = 75 (m/min) for a feed of 0.4 mm/rev. The combined operator and machine rate are $45.60/hr, and the insert has six usable sides, costs $24.00 and cannot be resold when used up. It takes 2.0 min to load the workpiece and 3.50 min to change the tool and 3.00 min to index the tool.

a)What is the cutting speed for maximum production rate?

b)What is the cutting speed for minimum cost?

c)How long would it take to make 150 parts at each speed?

d)How much would it cost to make 150 parts at each speed?

Explanation / Answer

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