GATE ME 2024 Set 1 — Question 60
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Manufacturing Processes → Machining & Machine Tools → Tool Life (Taylor's Equation)
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Question
A cutting tool provides a tool life of 60 minutes while machining with the cutting speed of 60 m/min. When the same tool is used for machining the same material, it provides a tool life of 10 minutes for a cutting speed of 100 m/min. If the cutting speed is changed to 80 m/min for the same tool and work material combination, the tool life computed using Taylor’s tool life model is____________ minutes (rounded off to 2 decimal places).
Correct answer
21 to 22.5
Solution
1.Determine Taylor's exponent (n):
Taylor's tool life equation is .Given: and .
2.Calculate tool life for V = 80 m/min:
.
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