NUMERICAL CONTROL M/C (NC)

INTRODUCTION

•  Numerical control is a system which the actions are controlled by direct insertion of numerical data at some point. 

• NC (Numerical control) can be defined as a form of programmable automation in which the machine or machine tool action is controlled by a program. Program is containing coded numeric data.

 Basic Components of NC (Numerical control) System

 1. Program of instructions

2. Machine control unit or controller unit (MCU)

3. Machine tool.

  Program of instructions :-

·      It is a detailed step by step Set of directions to the machine tool for doing particular work.

                                                    OR

·      It is detailed step by step set of directions which tell the machine tool what to be done and in what sequence.

·      The part programme is written in coded form.

·      The part programme is fed to the machine control unit through some input media.

Such as

1. Punched card

2. Magnetic tapes and floppy disks.

3.  Paper tapes.

 Machine control unit or controller unit (MCU):-

·      The second basic component of numerical control system is the controller unit

·      It consists of electronics and hardware component.

·      The main function of MCU is the convert the program of instructions into mechanical action of the machine tool

 Machine tool:

·       It is the third component of numerical control system to perform the useful actual work.

·       It is the tool which converts the raw material into finished or required part

·       It is control by MCU (machine control unit)

·       Machine tool consists of workable, spindle, cutting tool, and soon.