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Machining Economy Part - III

If the Taylor...

Question

If the Taylor's tool life exponent n is 0.4 and the tooling cost is $₹$ 50 per replacement, machining cost is $₹$ 7 per min. If number of replacement by operator is given by 2. The optimum tool life for minimum cost is ________min.
10

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Solution

The correct option is A 10
10.714

n=0.4
Machining cost, $C_{m} = ₹ 7$ per min
Number of replacement = 2
Tooling cost, $C_{t} = 50 = ₹ 50$
Optimum tool life for minimum cost,

$T_{0} = \frac{C_{1}}{C_{m}} (\frac{1 - n}{n}) = \frac{50}{7} (\frac{1 - 0.4}{0.4})$
= 10.714 min

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