GATE ME 2015 Set 3 — Question 45
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Manufacturing Processes → CNC & Work Holding → CNC Programming (G & M Codes)
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Question
In a CNC milling operation, the tool has to machine the circular arc from point to at sequence number of the CNC part program. If the center of the arc is at and the machine has incremental mode of defining position coordinates, the correct tool path command is
Correct answer
(B) N 05 G91 G03 X-10 Y-10 R10
Solution
To determine the correct CNC command:
1.Sequence Number: The sequence number is , so the command starts with
N 05.2.Coordinate Mode: The machine uses incremental mode, which is specified by
G91.3.Interpolation Direction:
- Start point:
- End point:
- Center:
- The vector from the center to the start point is .
- The vector from the center to the end point is .
- Moving from to along a circular path is a counter-clockwise (CCW) motion.
- CCW circular interpolation is specified by
G03.
- Incremental
- Incremental
N 05 G91 G03 X-10 Y-10 R10. Correct option is (B).Continue learning with Success Tracker
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