Preview Questions CNC Operator | Role Specific Skill

Question 1: What is the most critical factor to consider when choosing a cutting tool material for CNC machining?

Which action should you take?

Choose only one option

The brand of the cutting tool

The hardness and toughness of the material being cut

The weight of the tool

The color of the tool material

Question 2: How can you prevent tool deflection during heavy cuts on a CNC machine?

Which action should you take?

Choose only one option

Ignore deflection as long as the machine operates

Increase the cutting depth to improve tool penetration

Increase tool speed to compensate for deflection

Use a rigid tool holder, reduce the cutting depth, and adjust feed rates

Question 3: What is the correct procedure for calibrating a CNC machine's linear scale?

Which action should you take?

Choose only one option

Use a calibrated gauge block or precision scale to check and adjust the machine's accuracy

Only check the travel at one point and assume linearity

Use a standard ruler to measure the machine's travel

Ignore the linear scale and focus on the spindle speed

Question 4: What is the role of M-codes in CNC programming?

Which action should you take?

Choose only one option

They generate the part geometry automatically

They define the workpiece dimensions

They control auxiliary functions such as spindle on/off, tool changes, and coolant flow

They adjust feed rates and spindle speeds

Question 5: What is the proper method to troubleshoot poor part finish quality during CNC machining?

Which action should you take?

Choose only one option

Ignore the poor finish if the part dimensions are correct

Check the cutting parameters, tool condition, and machine setup

Increase the feed rate to reduce tool engagement

Reduce the spindle speed and hope for a better finish

Question 6: How do you ensure the CNC machine remains in calibration throughout its operational life?

Which action should you take?

Choose only one option

By using the machine only for light-duty operations

By only calibrating the machine once during installation

By recalibrating after every material change

By regularly checking the machine's performance and adjusting parameters as needed