UNIT 4 CNC Drives

Analyze: What is the primary function of the drives in a CNC machine?

• To control the speed of the machine
• To control the direction of movement of the machine
• To control the torque of the machine
• To control the temperature of the machine

Evaluate: What are the different types of drives used in CNC machines?

• AC Drives
• DC Drives
• Servo Drives
• Pneumatic Drives

Synthesize: How does a servo drive differ from an AC drive in CNC machines?

• Servo drives are more precise and accurate
• AC drives are more precise and accurate
• Servo drives are less precise and accurate
• AC drives are less precise and accurate

Apply: How does the torque control in a CNC machine help in the precision of machining?

• It increases the precision of machining
• It decreases the precision of machining
• It has no effect on the precision of machining
• It depends on the type of drive used

Understand: What is the function of a DC drive in a CNC machine?

• To control the speed of the machine
• To control the direction of movement of the machine
• To control the torque of the machine
• To control the temperature of the machine

Remember: What is the primary difference between AC and DC drives in a CNC machine?

• AC drives use alternating current and DC drives use direct current
• AC drives use direct current and DC drives use alternating current
• AC drives are more efficient and DC drives are less efficient
• AC drives are less efficient and DC drives are more efficient

Analyze: How does a servo drive enhance the performance of a CNC machine?

• It provides higher speed control
• It provides higher torque control
• It provides higher accuracy
• All of the above

Evaluate: How does the type of drive used in a CNC machine affect the precision of the machining process?

• The type of drive has no effect on the precision of the machining process
• The precision of machining increases with the use of servo drives
• The precision of machining decreases with the use of AC drives
• The precision of machining depends on other factors as well

Synthesize: How does the use of AC drives affect the power consumption in a CNC machine?

• It increases the power consumption
• It decreases the power consumption
• It has no effect on the power consumption
• It depends on the load on the machine

Apply: In a CNC machine, how does the use of servo drives help in reducing the wear and tear of the machine components?

• It increases the wear and tear of the machine components
• It decreases the wear and tear of the machine components
• It has no effect on the wear and tear of the machine components
• It depends on the type of material being machined