This document provides an overview of CNC programming and operation skills training at the Government Tool Room and Training Centre in Hassan. It introduces the GTTC and its facilities for CAD/CAM and advanced manufacturing techniques. It then covers the basics of CNC machines, including their typical elements, how they work through G and M codes, the start procedure, programming fundamentals, and format of blocks. The document also discusses advantages like easier programming and complex geometry production, and disadvantages such as high costs and needing skilled operators.

1. CNC
PROGRAMMING
AND OPERATION
SKILLS
TRAINING AT GTTC HASSAN.
BY SHIVARAJ K

2. CONTENTS
 1.INTRODUCTION ABOUT GTTC
 2.CNC INTRODUCTION
 3.ELEMENTS OF CNC MACHINE
 4.HOW CNC WORKS
 5.START PROCEDURE
 6.CNC PROGRAMMING BASICS
 7.METHOD OF INSERTION OF NEW PROGRAM
 8.COMMON FORMAT OF BLOCK
 9.ADVANTAGES AND DISADVANTAGES OF CNC
 10.SELF EVALUATION

3. 1. INTRODUCTION
• Government tool room and training centre is modern tool room and training centre with state
of art CAD/CAM equipment, machinery and inspection facilities to meet the needs of customers.
• GTTC is committed to achieve customer satisfaction in quality and delivery of tool engineering
education, services as precision machining.
• GTTC has acquired mastery in tool engineering and vast experience in conducting well
structured , practical oriented training programmes leading to post graduation, diploma and
certificates.
• GTTC conducts a number of short term programmes in tool design, advanced manufacturing
techniques, design analysis and CNC programming.
• It also gives a training on some software's used for design and manufacturing products such as
Uni-Graphics, Pro-E, Master cam etc.,

4. 2. CNC INTODUCTION
 A numerical control system in which the data handling, control sequences ,
and response to input is determined by on board computer system at the
machine tool.

5. 3.ELEMENT OF CNC MACHINE
 A CNC MACHINE CONSISTS FOLLOWING 6 MAJOR ELEMENTS
1. Input Device
2. Machine Control Unit
3. Machine Tool
4. Driving System
5. Feedback Devices
6. Display Unit

6. 4.HOW CNC WORKS?
 Controlled by G and M codes
 These are number values and coordinates.
 Each number or code is assigned to particular operation
 Typed in manually to cad by machine operators
 G and M codes are automatically generated by the computer

7. 5.START PROCEDURE

8. 6.CNC PROGRAMMING
 Important things to know :
1. coordinate system
2. Units, incremental or absolute positioning
3. Feed rate and spindle speed
4. Tool codes
5. G codes and M codes

9. 7.METHOD OF INSERTION OF NEW PROGRAM

10. 8.COMMON FORMAT OF BLOCK

11. 9.ADVANTAGES AND DISADVANTAGES OF
CNC
ADVANTAGES
 Easier to program
 Easy to change a program
 Safe to operate
 Complex geometry models can be
produced
DISADVANTAGES
 Costly setup
 Skilled operators required
 Maintenance is difficult

12. 10.SELF EVALUATION
 Hence I have successfully studied about the CNC machine tool and their
function. With their G & M codes and operation performed on these type
of machine tool. The importance of lathes and milling machines even if
they are conventional cannot be undetermined. These machines have
played a vital role in bringing about industrial revolution and have laid the
foundations. But the bringing about of the new technology in the present
era is very important. The conventional machines are required in small
quantities whereas the CNC machines must be increased to improve the
quantity and quality of production.

13. “
”
IT IS A PRECISION THAT MAKES
THE WORLD GO ROUND
THANK YOU