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SHASHI INTERNSHIP PPT.pptx
1. Department of Mechanical Engineering
Internship seminar on:
“CNC OPERATION AND PROGRAMMING ”
Submitted for the partial fulfillment of degree under:
Visvesvaraya Technological University
Jnana Sangama, VTU Main Road, Macche, Belagavi, Karnataka
– 590018
Internal Guidance of:
Dr. Vinod kumar Biradar
Assistant Professor
Mechanical Engineering Department
External Guidance of:
Mr. Raghu
Technician, Trimurthi CNC Machining
Peenya 1st stage
SHASHIDHARA J S
1AR21ME406
2. INTRODUCTION
The Trimurthi CNC Machining Pvt Ltd established in 2006 at Peenya 1st stage, Banglore.
It is one-stop solution for Precision components using computerized machine tools..
Company products are manufactured & assembled locally with a customer centric approach.
Company commitment to using advanced technology and manufacturing techniques ensure
supreme quality of our products.
Company also provide the below services -
Design, prototyping, metal work, tooling, production.
Manufacture die and mold.
Tooling for composite parts.
Manufacturing of Jigs/fixtures.
3. Mission and vision of the training centre
Vision
To be looked upon as not only a company that provides high quality products and services, but
also a vital business and community leader-maintaining high standards and ethical conduct in the
daily performance of its business.
Mission
To be committed to delivering high quality products and services at a fair and reasonable price and
in a timely manner as required by our valued customers. This mission calls for a commitment to
excellence by our company and all of our employees. It is our mission to be dedicated to
maintaining a high degree of performance while utilizing high ethical standards.
4. What is CNC ?
CNC is a technology used in manufacturing processes that involves use of computer software
to control the movement of machinery and tools.
A CNC machine is programmed with instructions for how to shape and cut raw materials into
finished product.
These instructions are fed into the machines computer system ,which then translates them
into movements of the machine tools.
5. Elements of CNC machine
1. Input Device
2. Machine control unit
3. Machine tool
4. Driving system
5. Feedback devices
6. Display unit
6. Block Diagram of CNC machine
Input Devices
Data processing
Unit
Control loop
unit
MCU
Driving system Machine tool Feedback system
Display unit
Part Programs
Motion data
Miscellaneous
function
Velocity
Feedback
Position
Feedback
7. CNC Machine start procedure
Servo stabilizer ON by green push
button
Door close (CNC M/C)
Emergency press
CNC ON by green push button
Emergency release
Check Alarm, press Reset if not then
rectify
Step:1
Step:2
Step:3
Step:4
Step:5
Step:6
Continue….
8. Check Hydraulic pressure (40-45 bar)
Check Chuck pressure (8-25 bar) &
Tail stock pressure (8-16 bar)
Check M/C Home Position
M/C is Ready for operation
Check lubrication level &
Pressure(Should be at Green level)
Step:7
Step:8
Step:9
Step:11
Step:10
9. Method Of inserting new program
Select Edit mode
Programme protect key (PPK) ON
Select programme function key
Open Directory (DIR) by using soft key
in CRT
Type programme no.(which program
no not use in directory)
Then Insert
Step:2
Step:3
Step:4
Step:5
Step:6
Step:1
End of Block (EOB) insert
Insert program sequencly in block
Program protect key (PPK) off
Step:7
Step:8
Step:9
10. Important things to know :
1. Co-ordinate systems.
2. Units,Incrimental or absolute positioning.
3. Feed rate and spindle speed.
4. Tool codes.
5. G codes and M codes.
11. Program format
X10 Y10
G01
N10 F30 S1200 T01 M3
SEQUENCE
NO.
PREPARATOTY
FUNCTION
X-COORDINATE
Y COORDINATE
FEED FUNCTION
SPEED FUNCTION
TOOL FUNCTION
MISCLLANEOUS
FUNCTION
