Yet Another G-code Quiz!

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Quizzes Created: 1 | Total Attempts: 2,354
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  • 1/10 Questions

    What is the g-code for "INPUT IN MM"?

    • G56
    • G72
    • G21
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About This Quiz

Mathematicians and lovers of all things that involve calculating the diameter of a circle or radius, this quiz is for you. Get ready for your knowledge to be tested on various places that you can use the G-code.

Yet Another G-code Quiz! - Quiz

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  • 2. 

    What is the g-code for "INPUT IN INCHES"?

    • G20

    • G22

    • G54

    Correct Answer
    A. G20
    Explanation
    The correct answer is G20. In CNC programming, G20 is the g-code used to specify that the input units are in inches. This means that all dimensions and measurements entered into the program will be interpreted as inches, allowing for accurate machining operations in the imperial system of measurement. G22, on the other hand, is the g-code used to specify that the input units are in millimeters. G54 is a g-code used to specify the coordinate system offset, but it is not specifically related to input units.

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  • 3. 

    What is the g-code for "return to reference point"?

    • G27

    • G28

    • G29

    Correct Answer
    A. G28
    Explanation
    The correct answer is G28. G-code is a programming language used in CNC machines to control their movements. G28 is the specific G-code command that instructs the machine to return to its reference point, also known as the home position. This command is commonly used to ensure that the machine is in a known and consistent starting position before starting a new operation.

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  • 4. 

    What is the g-code for "drilling cycle, dwell"?

    • G79

    • G54

    • G82

    Correct Answer
    A. G82
    Explanation
    The correct answer is G82. G82 is the g-code used for a drilling cycle with a dwell. This means that the machine will perform a drilling operation and then pause for a specified amount of time before retracting the tool. This g-code is commonly used in CNC machining to automate the drilling process and ensure consistent and accurate hole drilling.

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  • 5. 

    What is the g-code for "tool length compensation cancel"?

    • G44

    • G47

    • G49

    Correct Answer
    A. G49
    Explanation
    The g-code for "tool length compensation cancel" is G49.

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  • 6. 

    What is the g-code for "boring, spindle stop, rapid out"?

    • G84

    • G86

    • G89

    Correct Answer
    A. G86
    Explanation
    The g-code for "boring, spindle stop, rapid out" is G86.

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  • 7. 

    What is the g-code for "return from reference point"?

    • G27

    • G28

    • G29

    Correct Answer
    A. G29
    Explanation
    The g-code for "return from reference point" is G29.

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  • 8. 

    What is the g-code used to  "measure the diameter and center of a hole"?

    • G27

    • G31

    • G38

    Correct Answer
    A. G38
    Explanation
    G38 is the correct answer because it is the g-code used to measure the diameter and center of a hole. G38 initiates a probing cycle where the machine moves towards the hole until it makes contact, measures the position, and calculates the diameter and center coordinates. This g-code is commonly used in CNC machining to ensure accurate hole dimensions and alignment.

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  • 9. 

    What is the g-code for "scaling off"?

    • G38

    • G41

    • G48

    Correct Answer
    A. G48
    Explanation
    G48 is the correct g-code for "scaling off". G48 is used in CNC programming to cancel the scaling function. Scaling is the process of resizing or adjusting the dimensions of a part or object. By using G48, the scaling function is turned off, meaning that the dimensions of the part will not be changed or adjusted during the machining process.

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  • 10. 

    What is the g-code for "boring, no dwell, feed out"?

    • G84

    • G85

    • G86

    Correct Answer
    A. G85
    Explanation
    The g-code for "boring, no dwell, feed out" is G85.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 02, 2010
    Quiz Created by
    Coxc9
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