CNC Interview Questions
Follow YT video for explanation : https://youtu.be/-9A3wAsfDWw
Q. (1) Who is known as the father of CNC?
Ans.> John T. Parsons
Q. (2) What are the elements of CNC Machines?
Ans.> 1.Input device
2.CPU / Machine Unit
3.M/C Tool
4.Driving System
5.Feedback Device
6.Display Unit
Q. (3) What are the Difference between Milling and Turning?
Ans.>
Q. (4) What type of motors are used in CNC Machines?
Ans.> 1. Servo Motors – used for X and Z axis movement of the turret, Spindle rotation
2. Induction Motors – used for circulating coolant, lubricating oil, hydraulic oil
Q. (5) What is the Mechanism of movement in X and Z axes in CNC Turning.
Ans.> For X and Z axes movement Servo or Ball Lead screw mechanism is used.
Q. (6) What is mehanism of Turret movement in CNC Turning?
Ans.> For the turret Movement any of these mechanisms are used:
1. Servo Mechanism
2. Stepper Motor Mechanism
3. Geneva Drive Mechanism
4. Gear Mechaniam
Q. (7) What abrasives are used in Grinding Machines?
Ans.> Aluminum Oxide, Silicon Carbide, Sandstone
Q. (8) What is formula for Cutting Speed in Milling and Turning?
Ans.> For Milling :
For Turning :
Other articles on CNC Machining :
Introduction to CNC Tecchnology
Mechanism of CNC Milling and Turning
General Terms used in CNC Machining
Elements of CNC Machines/System
 Who is known as the father of CNC? Q. (2) What are the elements of CNC Machines? Q. (3) What are the Difference between Milling and Turning? Q. (4) What type of motors are used in CNC Machines?){kind=link}