GATE ME 2015 Set 3 — Question 30
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Manufacturing Processes → CNC & Work Holding → CNC Programming (G & M Codes)
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Question
A drill is positioned at point P and it has to proceed to point Q. The coordinates of point Q in the incremental system of defining position of a point in CNC part program will be
Correct answer
(D) (4, 7)
Solution
In an incremental coordinate system (G91 in CNC), the coordinates of a target point are defined relative to the current position.Current position (P): , .
Target position (Q): , .Incremental coordinates from P to Q:So, the incremental coordinates are .
Target position (Q): , .Incremental coordinates from P to Q:So, the incremental coordinates are .
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