PRESENTED BY
SUBHENDU KUMAR BEHERA


INTRODUCTION
BHEL was established more than 50 years ago when its first plant was setup in Bhopal ushering in the indigenous Heavy Electrical Equipment Industry in India. A dream which has been more than realized with a well recognized track record of performance it has been earning profits continuously since 1971-72 and achieved a turnover of Rs 2,658 crore for the year 2007-08, showing a growth of 17 per cent over the previous year. Bharat Heavy Electricals Limited is c ....etc

[:=Read Full Message Here=:]

Theory of machines is very popular book among all book published by R.S. Khurmi. He is very popular author in India as well as Abroad such as South African, USA, and Canada.
Theory of Machines is basically a science of Mechanisms and its Dynamics Analysis. this subject is divided in basically two parts first one is Kinematics of Machinery and Second one is Dynamics of Machinery. A Mechanical Designer need should have very strong command in whole subject.

Here we are posting a very popular book of Theory of machines. Users can download whole ....etc

[:=Read Full Message Here=:]

constructional aspects of gas insulated substation

It is very much required to establish an electrical substation at load center. Since, establishing a substation at load center is quite economical and profitable in many aspects. As it reduces length of feeders and due to short length feeders, the quality of voltage regulation improves. But the main obstruction of establishing a substation at load center is space. Generally main load center of any place is situated at very congested place where, sufficient land for establishing conventional el ....etc

[:=Read Full Message Here=:]

NC and CNC machines and Control Programming

History of CNC

1949
US Air Force asks MIT to develop a numerically controlled machine.

1952
Prototype NC machine demonstrated (punched tape input)

1980-
CNC machines (computer used to page link directly to controller)

1990-
DNC: external computer drip feeds control programmer to machine tool controller ....etc

[:=Read Full Message Here=:]

NC and CNC machines and Control Programming



Motivation and uses

To manufacture complex curved geometries in 2D or 3D was extremely expensive by mechanical means (which usually would require complex jigs to control the cutter motions)

Machining components with repeatable accuracy

Advantages of CNC

Easier to program;
- Easy storage of existing programs;
- Easy to change a program
- Avoids human errors
- NC machines are safer to operate
- Complex geometry is ....etc

[:=Read Full Message Here=:]

please, give me ppt of cnc contructional feature in 12 slide of power point presantation. ....etc

[:=Read Full Message Here=:]

Numerical control has caused a virtual revolution in the discrete metal parts manufacturing industry. The success of NC has led to number of extensions of Numeric Control concepts and technology. Four of the important developments are the following:

Direct numerical control (DNC).
Computer numerical control (CNC).
Adaptive Control.
Industrial robots.
Direct Numerical Control(DNC)
There are number of problems inherent in conventional machiningwhich are motivated machine tool builders to seek imprivements in the basic NC system. Among the diffi ....etc

[:=Read Full Message Here=:]

To get full information or details of robotic trolley for material handling please have a look on the pages

http://seminarsprojects.net/Thread-robotic-trolley-for-material-handling?pid=47552&mode=threaded

if you again feel trouble on robotic trolley for material handling please reply in that page and ask specific fields in robotic trolley for material handling ....etc

[:=Read Full Message Here=:]

To get full information or details of bhel haridwar summer training report ppt on cnc machines please have a look on the pages

http://slidesharedikshagangwar/bhel-ppt-37807392

http://slideshareArunGupta13/bhel-haridwar-summer-training

if you again feel trouble on bhel haridwar summer training report ppt on cnc machines please reply in that page and ask specific fields in bhel haridwar summer training report ppt on cnc machines ....etc

[:=Read Full Message Here=:]

Presented by
Mr. Prateek Singh
(Vocational Trainee-BHEL Bhopal)



INDEX

DEVELOPMENT OF CNC MACHINES

CNC SYSTEM

PROGRAMMABLE LOGIC CONTROLER

SERVO DRIVES

CNC RETROFITTING

MAINTENANCE MANAGEMENT

DEVELOPMENT OF CNC MACHINES
EVOLUTION OF THE CNC MACHINES

CNC MACHINES DEVELOPMENTS

BENEFITS OF CNC MACHINES

EVOLUTION OF THE CNC MACHINES

The first CNC Machine was built in 1949 at MIT ,USA for manufacturing of the Air Craft components having intricate profiles using ....etc

[:=Read Full Message Here=:]