GATE ME 2019 Set 1 — Question 62
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Manufacturing Processes → Machining & Machine Tools → Tool Geometry, Materials & Wear
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Question
In ASA system, the side cutting and end cutting edge angles of a sharp turning tool are and , respectively. The feed during cylindrical turning is mm/rev. The center line average surface roughness (in m, round off to one decimal place) of the generated surface is ______.
Correct answer
3.5 to 3.9
Solution
The center line average (CLA) surface roughness, , for a turning operation is given by the formula:where:
is the feed rate = mm/rev
is the side cutting edge angle (SCEA) =
is the end cutting edge angle (ECEA) = Substitute the given values:We know .
And Convert to m:Rounding off to one decimal place, m.The final answer is .
is the feed rate = mm/rev
is the side cutting edge angle (SCEA) =
is the end cutting edge angle (ECEA) = Substitute the given values:We know .
And Convert to m:Rounding off to one decimal place, m.The final answer is .
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