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In a CNC milling operation in xy plane, the tool has to machine the circular arc from point (30, 30) to (20, 20) with feed of 2 inch per minute at sequence number 10 of the CNC part program. The centre of Arc is (20, 30). If the machine has absolute mode of defining position co-ordinates, the correct tool path command is: 
  • a)
    N010 G90 G02 X20 Y20 I10 J0 F2
  • b)
    N010 G91 G02 X20 Y20 I10 J0 F2
  • c)
    N010 G90 G02 X20 Y20 I-10 J0 F2
  • d)
    N010 G91 G02 X20 Y20 I-10 J0 F2
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
In a CNC milling operation in xy plane, the tool has to machine the ci...
Circular interpolation with I, J & K concepts:
G90: Absolute positioning
G91: Incremental positioning
The curvature of motion is determined by the location of its centre point (I, JK or K) which must also be specified in same block (if radius is not used). The I, and J values are distance from the starting point centre point of the curvature of motion.
N010 G90 G02 X20 Y20 I-10 J0 F2
In first quadrant if centre is towards the origin from start point, then I will be negative or if away take it positive (In 1st quadrant and 4th quadrant) and vice versa in 2nd and and 3rd quadrants.
If starting point is in 1st and 2nd quadrant then J will be taken with Negative sign towards centre and J with positive sign in 3rd and 4th quadrant.
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Most Upvoted Answer
In a CNC milling operation in xy plane, the tool has to machine the ci...
Explanation:

To machine the circular arc from point (30, 30) to (20, 20) with the center at (20, 30) in the XY plane, we need to use the G02 command in the CNC part program. Here's a step-by-step explanation of the correct tool path command:

Step 1:
The command starts with the sequence number 10, which is denoted by N010.

Step 2:
Since the machine has an absolute mode of defining position coordinates, we need to use the G90 command. G90 sets the machine to absolute programming mode.

Step 3:
The G02 command is used for circular interpolation in a clockwise direction. In this case, we want to move from point (30, 30) to (20, 20) in a clockwise direction. So, the correct command is G02.

Step 4:
Next, we specify the X and Y coordinates of the end point of the arc. The end point is (20, 20), so the command is X20 Y20.

Step 5:
To define the center of the arc, we use the I and J values. The center is at (20, 30), so the command is I-10 J0. The I value is the distance from the starting point to the center in the X direction, and the J value is the distance from the starting point to the center in the Y direction. In this case, since the center is at (20, 30), the I value is -10 (20 - 30 = -10) and the J value is 0.

Step 6:
Finally, we specify the feed rate of 2 inches per minute using the F command. So, the command is F2.

Therefore, the correct tool path command is N010 G90 G02 X20 Y20 I-10 J0 F2.
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In a CNC milling operation in xy plane, the tool has to machine the circular arc from point (30, 30) to (20, 20) with feed of 2 inch per minute at sequence number 10 of the CNC part program. The centre of Arc is (20, 30). If the machine has absolute mode of defining position co-ordinates, the correct tool path command is:a)N010 G90 G02 X20 Y20 I10 J0 F2b)N010 G91 G02 X20 Y20 I10 J0 F2c)N010 G90 G02 X20 Y20 I-10 J0 F2d)N010 G91 G02 X20 Y20 I-10 J0 F2Correct answer is option 'C'. Can you explain this answer?
Question Description
In a CNC milling operation in xy plane, the tool has to machine the circular arc from point (30, 30) to (20, 20) with feed of 2 inch per minute at sequence number 10 of the CNC part program. The centre of Arc is (20, 30). If the machine has absolute mode of defining position co-ordinates, the correct tool path command is:a)N010 G90 G02 X20 Y20 I10 J0 F2b)N010 G91 G02 X20 Y20 I10 J0 F2c)N010 G90 G02 X20 Y20 I-10 J0 F2d)N010 G91 G02 X20 Y20 I-10 J0 F2Correct answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about In a CNC milling operation in xy plane, the tool has to machine the circular arc from point (30, 30) to (20, 20) with feed of 2 inch per minute at sequence number 10 of the CNC part program. The centre of Arc is (20, 30). If the machine has absolute mode of defining position co-ordinates, the correct tool path command is:a)N010 G90 G02 X20 Y20 I10 J0 F2b)N010 G91 G02 X20 Y20 I10 J0 F2c)N010 G90 G02 X20 Y20 I-10 J0 F2d)N010 G91 G02 X20 Y20 I-10 J0 F2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a CNC milling operation in xy plane, the tool has to machine the circular arc from point (30, 30) to (20, 20) with feed of 2 inch per minute at sequence number 10 of the CNC part program. The centre of Arc is (20, 30). If the machine has absolute mode of defining position co-ordinates, the correct tool path command is:a)N010 G90 G02 X20 Y20 I10 J0 F2b)N010 G91 G02 X20 Y20 I10 J0 F2c)N010 G90 G02 X20 Y20 I-10 J0 F2d)N010 G91 G02 X20 Y20 I-10 J0 F2Correct answer is option 'C'. Can you explain this answer?.
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