1. Bharath Institute of Higher Education and Research
Department of Mechatronics
U18PCMT502 – CNC Technology
ASSIGNMENT QUESTIONS
Unit – I
Part-B (Marks: 6)
1) Briefly explain the elements of CNC machine.
2) Explain the different types of interpolation used in CNC machine.
Part-C (Marks: 10)
3) Explain the different types of CNC machines.
Unit – II
Part –B (Marks: 6)
1) Draw the flow diagram of drive system used in CNC machine
2) Explain the working procedure of Automatic Pallet Changer (APC)
Part- C (Marks: 10)
3) What is a Gearbox? Explain its operation with suitable diagram.
Unit – III
Part – B (Mark: 6)
1) Explain the working principle of synchro resolver with neat sketch
2) Write short notes on laser interferometer.
Part – C (Marks: 10)
3) Explain the open loop and closed loop control system with neat diagram
Unit – IV
Part – B ( Marks : 6)
1) Write a short notes on Tool nose radius compensation
2) Write a program for the following circular interpolation operation and explain
each G-codes and M-Codes used in it.
2. Part – C (Marks: 10)
3) Write a program for the following milling operation and explain each G-Code
and M-Code that is used.
Unit – V
Part-B( Marks : 6)
1) Briefly explain the three level of training in CNC machines
2) Explain the maintenance features of CNC machine
Part- C (Marks: 10)
3) Discuss the preventive maintenance procedure followed in CNC machines.
