Mechanical Engineering
GATE ME concept:tool-geometry PYQs
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How to practice concept:tool-geometry
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–2 of 2. Imported answers require independent review unless marked reviewed.
Question 43
Open questionMENAT2 marksNeeds review
A cylindrical bar with 200 mm diameter is being turned with a tool having geometry 0° - 9° - 7° - 8° - 15° - 30° - 0.05 inch (Coordinate system, ASA) resulting in a cutting force
. If the tool geometry is changed to 0° - 9° - 7° - 8° - 15° - 0° - 0.05 inch (Coordinate system, ASA) and all other parameters remain unchanged, the cutting force changes to
. Specific cutting energy (in J/mm
) is
, where
is the specific energy coefficient, and
is the uncut thickness in mm. The value of percentage change in cutting force
, i.e.
, is ______ (round off to one decimal place).Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 45
Open questionMENAT2 marksNeeds review
In a turning process using orthogonal tool geometry, a chip length of 100 mm is obtained for an uncut chip length of 250 mm.
The cutting conditions are: cutting speed = 30 m/min, rake angle = 20°.
The shear plane angle is ______ degrees (round off to one decimal place).
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