GATE ME 2026 Set 1 — Question 32
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Manufacturing Processes → CNC & Work Holding → Jigs & Fixtures
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Question
A work piece is to be firmly held in a fixture. It is to be machined by using a plain slab milling cutter as shown in the figure below.Which one of the following options is the most suitable value of height of the fixture in mm?
Figure not to scale

Correct answer
(A) 200
Solution
The workpiece height is 205 mm. To machine the top surface using a slab milling cutter, the fixture height must be less than the workpiece height to ensure the cutter does not collide with the fixture. To provide maximum stability and support, should be as close to the workpiece height as possible while maintaining clearance.
- mm: Higher than the workpiece, causing collision.
- mm: Provides 5 mm clearance and maximum support.
- mm or mm: Provides clearance but significantly less support.
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