02 A Introduction to CNC Machines & principleses

Fill in the blank: Numerical Control is defined as "The control of Machine Tool movements and various other functions by means of instructions expressed in ________ values via a control unit."

• numerical

• alphabetical

• random

• graphical

What does CNC stand for in the context of Numerical Control Machines?

• Computer Numerical Control

• Central Numerical Control

• Control Numerical Computer

• Computerized Number Control

Refer to the diagram of the 'Typical machine layout'. What is the component labeled as the unit that stores information for the microcomputer?

• Machine tool

• Memory

• Control unit

• Data flow

Refer to the diagram of the 'Typical machine layout'. The ________ is responsible for processing and controlling the machine tool.

• Microcomputer

• Hydraulic Pump

• Coolant Tank

• Spindle Motor

The direction of data flow between the control unit and the machine tool in the 'Typical machine layout' is:

• From the control unit to the machine tool

• From the machine tool to the control unit

• Bidirectional between both units

• No data flow between them

What is the function of the Feedback Device in the system?

• To display information

• To provide position and velocity feedback

• To process data

• To drive the machine tool

Refer to the 'System layout' diagram. The Machine Control Unit consists of which two sub-units?

• Input Device and Display Unit

• Data Processing Unit and Control Loop Unit

• Driving System and Feedback Device

• Machine Tool and Miscellaneous Function

Refer to the 'System layout' diagram. The ________ provides motion data to the Driving System.

• Machine Control Unit

• Power Supply Unit

• Sensor Module

• Display Panel

Refer to the 'System layout' diagram. Match the following components to their functions:

• Display Unit

• Displays information

• Feedback Device

• Provides position and velocity feedback

• Input Device

• Provides part programmes

• Driving System

• Drives the machine tool

According to the passage, what is the main function of the machine control unit in CNC machines?

• To manually operate the machine tool

• To generate and create 3D models from numerical code

• To store physical components

• To provide power to the machine