GATE ME 2016 Set 3 — Question 61
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Manufacturing Processes → Machining & Machine Tools → Tool Life (Taylor's Equation)
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Question
In a single point turning operation with cemented carbide tool and steel work piece, it is found that the Taylor’s exponent is . If the cutting speed is reduced by then the tool life changes by ______ times.
Correct answer
14 to 18
Solution
Taylor's tool life equation is given by:
where:
= cutting speed
= tool life
= Taylor's exponent
= constantGiven:
Let initial speed be and initial tool life be .
New speed, From Taylor's equation:
Thus, the tool life increases by 16 times.
where:
= cutting speed
= tool life
= Taylor's exponent
= constantGiven:
Let initial speed be and initial tool life be .
New speed, From Taylor's equation:
Thus, the tool life increases by 16 times.
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