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Exam (elaborations)

CNC Operation Test Questions & Answers 2024/2025

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  • CNC Operation
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  • CNC Operation

CNC Operation Test Questions & Answers 2024/2025 Which command is used for linear tool movement at the feed rate on a lathe? A. G00 B. G01 C. L1 D. G02 - ANSWERSB. G01 For most turning centers, part zero must be set for every tool. These numbers represent: A. The distance between pro...

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  • September 17, 2024
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CNC Operation
  • CNC Operation
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CNC Operation Test Questions &
Answers 2024/2025

Which command is used for linear tool movement at the feed rate on a lathe?

A. G00

B. G01

C. L1

D. G02 - ANSWERSB. G01



For most turning centers, part zero must be set for every tool. These numbers represent:

A. The distance between program zero and the chuck face

B. Distance between part zero and machine zero return position

C. The largest diameter and length the machine can turn

D. The distance from the floor to the spindle center line - ANSWERSB. Distance between part zero and
machine zero return position



A typical CNC milling machine has 4 or more axis it can move on.

A. True

B. False - ANSWERSB. False



The program letter H references Tool Length.

A. True

B. False - ANSWERSA. True



What function will pause a program at key points to allow an operator to measure a workpiece?

A. Block delete

B. Optional stop

C. Machine Overrides

,D. Cycle stop - ANSWERSB. Optional stop



Before running a program, check tool changer to confirm that tools are in correct positions

A. True

B. False - ANSWERSA. True



Select a typical tool change block from the options below:

A. T1 M06

B. G90 G54 X1.0 Y2.3

C. G53 G49 Z0.0 M05

D. G17 G20 G40 G49 G80 G90 - ANSWERSA. T1 M06



Which statement about basic CNC controls is true?

A. Cycle stop automatically shuts down all machine functions.

B. E-stop halts all axis motion without stopping the spindle

C. Cycle start begins or restarts a program that has stopped. - ANSWERSC. Cycle start begins or restarts a
program that has stopped.



The primary difference between horizontal and vertical machining centers is:

A. servomotor size

B. spindle speed

C. servomotor power

D. spindle orientation - ANSWERSD. spindle orientation



Which G code is used for cutter compensation cancel?

A. G40

B. G41

C. G42 - ANSWERSA. G40

, The ___________ defines the thickness of the material being removed from the workpiece.

A. depth of cut

B. spindle speed

C. diameter

D. feed rate - ANSWERSA. depth of cut



Single block mode allows an operator to:

A. Run the program uninterrupted from start to finish

B. Check the first few lines of the program

C. Machine parts much faster

D. Manually move the cutting tool into position - ANSWERSB. Check the first few lines of the program



Select a typical safety block from the options below:

A. T1 M06

B. G90 G54 X1.0 Y 2.3

C. G53 G49 Z0.0 M05

D. G17 G20 G40 G49 G80 G90 - ANSWERSD. G17 G20 G40 G49 G80 G90



If the live center on a lathe does not run true, the work will have diameters that are:

A. Eccentric

B. Concentric

C. Out of round

D. None of the above - ANSWERSC. Out of round



On a Haas control, what button is used to enter Tool Offset values?

A. RESET

B. POSIT

C. OFFSET

D. MDI - ANSWERSC. OFFSET

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