DMV30203 CHAPTER 6

What is CNC machining?

• A manual machining process using hand-operated tools.

• A process where pre-programmed computer software controls tool movements.

• A programming language used for writing computer software.

• A method to control machine tools using levers and buttons.

What is a part program in CNC machining?

• A manual instruction to move the CNC machine tool.

• A sequence of coded instructions that control the movement of the CNC machine.

• A mechanical drawing of the part being produced.

• A software for simulating CNC machining.

What is the function of the M06 code in CNC programming?

• To start the spindle.

• To change the tool in the spindle.

• To stop the spindle.

• To activate the coolant.

What does the M30 code do in CNC programming?

• It stops the spindle.

• It activates the spindle to turn counterclockwise.

• It marks the end of the program and rewinds it to the beginning.

• It pauses the program and waits for the operator's input.

Which of the following CNC programs drills a hole at X=15, Y=20 with a depth of 22mm at a feed rate of 110 mm/min?

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X15 Y20 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G81 Z-22 R1 F110 N7 G80 N8 G00 Z1 M09 N9 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X0 Y0 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G81 Z-5 R1 F75 N7 G80 N8 G00 Z1 M09 N9 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X15 Y11 N4 S800 M03 N5 G43 H01 Z5 M08 N6 G84 Z-9 R1 F121 N7 G80 N8 G00 Z1 M09 N9 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X21 Y21 N4 S800 M03 N5 G43 H01 Z5 M08 N6 G84 Z-9 R1 F71 N7 G80 N8 G00 Z1 M09 N9 M30

Which program drills a hole at X=0, Y=0 with a depth of 5mm at a feed rate of 75 mm/min?

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X15 Y20 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G81 Z-22 R1 F110 N7 G80 N8 G00 Z1 M09 N9 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X0 Y0 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G81 Z-5 R1 F75 N7 G80 N8 G00 Z1 M09 N9 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X15 Y11 N4 S800 M03 N5 G43 H01 Z5 M08 N6 G84 Z-9 R1 F121 N7 G80 N8 G00 Z1 M09 N9 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X21 Y21 N4 S800 M03 N5 G43 H01 Z5 M08 N6 G84 Z-9 R1 F71 N7 G80 N8 G00 Z1 M09 N9 M30

What CNC program performs a tapping cycle at X=15, Y=11 with a depth of 9mm at a feed rate of 121 mm/min?

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X15 Y20 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G81 Z-22 R1 F110 N7 G80 N8 G00 Z1 M09 N9 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X0 Y0 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G81 Z-5 R1 F75 N7 G80 N8 G00 Z1 M09 N9 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X15 Y11 N4 S800 M03 N5 G43 H01 Z5 M08 N6 G84 Z-9 R1 F121 N7 G80 N8 G00 Z1 M09 N9 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X21 Y21 N4 S800 M03 N5 G43 H01 Z5 M08 N6 G84 Z-9 R1 F71 N7 G80 N8 G00 Z1 M09 N9 M30

Which CNC program includes a rapid traverse to X=9, Y=9, followed by a circular interpolation clockwise to X=19, Y=19 with a radius of 10?

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X9 Y9 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G02 X19 Y19 R10 F100 N7 G00 Z1 M09 N8 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X10 Y15 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G02 X15 Y20 R5 F100 N7 G00 Z1 M09 N8 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X10 Y20 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G03 X30 Y40 R15 F100 N7 G00 Z1 M09 N8 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X20 Y20 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G03 X30 Y30 R10 F100 N7 G00 Z1 M09 N8 M30

Which CNC program includes a rapid traverse to X=10, Y=15, followed by a circular interpolation clockwise to X=15, Y=20 with a radius of 5?

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X9 Y9 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G02 X19 Y19 R10 F100 N7 G00 Z1 M09 N8 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X10 Y15 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G02 X15 Y20 R5 F100 N7 G00 Z1 M09 N8 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X10 Y20 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G03 X30 Y40 R15 F100 N7 G00 Z1 M09 N8 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X20 Y20 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G03 X30 Y30 R10 F100 N7 G00 Z1 M09 N8 M30

What CNC program includes a rapid traverse to X=10, Y=20, followed by a circular interpolation counterclockwise to X=30, Y=40 with a radius of 15?

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X9 Y9 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G02 X19 Y19 R10 F100 N7 G00 Z1 M09 N8 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X10 Y15 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G02 X15 Y20 R5 F100 N7 G00 Z1 M09 N8 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X10 Y20 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G03 X30 Y40 R15 F100 N7 G00 Z1 M09 N8 M30

• N1 O00001 N2 T1 M06 N3 G90 G54 G00 X20 Y20 N4 S1200 M03 N5 G43 H01 Z5 M08 N6 G03 X30 Y30 R10 F100 N7 G00 Z1 M09 N8 M30