CNC Test Study Questions & Answers 2024/2025

CNC Test Study Questions & Answers
2024/2025

CNC - ANSWERSComputer Numerical control



Numerical Control - ANSWERSa method of automatically operating a manufacturing machine based on a
code of letters, numbers,and special characters.



Machine Control Unit (MCU) - ANSWERSBrain of the NC machine



Data Processing Unit (DPU) - ANSWERSReads the part program



Control Loop Unit (CLU) - ANSWERSControls the Machine tool operation



Two types of control systems - ANSWERS(1) Point-to-point and (2) Continuous-path



Point-to-point controllers - ANSWERSCauses the tool to move to a point on the part and execute an
operation at that point only. The tool is not in continuous contact with the part while it is moving.



Examples of Point-to-point controllers - ANSWERSDrilling, reaming, punching, boring, and tapping



Continuous-path controllers - ANSWERSCauses the tool to maintain continuous contact with the part ad
the tool cuts a contour shape.



Examples of Continuous-path controllers - ANSWERSMilling along any lines at any angle, milling arcs, and
Lathe turning



In a part program a block is equivalent to - ANSWERSa line of codes