CNC Milling Quiz

What does CNC stand for?

• Computerized Numeric Control

• Controlled Numeric Code

• Computer Numerical Control

• Centralized Number Coding

Which axis is typically the vertical axis in a 3-axis CNC milling machine?

• X-axis

• Y-axis

• Z-axis

• A-axis

The main function of the G-code in CNC programming is to:

• Control coolant

• Move the tool to a specific location

• Select spindle speed

• Switch the machine off

Which G-code command is used for rapid traverse?

• G00

• G01

• G02

• G90

G01 command is used for:

• Rapid movement

• Circular interpolation

• Linear interpolation

• Tool change

What is the function of M03 in CNC milling?

• Spindle OFF

• Coolant ON

• Spindle ON clockwise

• Program end

Which coordinate system is most commonly used in CNC programming?

• Polar

• Absolute

• Incremental

• Cartesian

What does M30 represent in a CNC program?

• Start the spindle

• End of the program and rewind

• Cancel current operation

• Return to home position

Which part of the CNC machine holds the cutting tool?

• Chuck

• Tailstock

• Spindle

• Turret

In absolute programming (G90), the coordinates are measured from:

• The last point

• The tool center

• The machine origin

• The work zero