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

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THE INDEXING MECHANISM OF GEAR HOBBING MACHINE

presented by:-

Waleed Munir 07-IME-14
Faizan Javed 07-IME-28
Shahbaz Malik 07-IME-32
Ahsan Tahir 07-IME-43
Osama Afzal 07-IME-18



abstract

A gear hobbing machine having a gear train interconnecting a hob and a workpiece to be machined by the hob, the gear train being disconnectable to permit of cutting a stationary workpiece by a milling cutter substituted for the hob, a subsidiary motor operable to impart an increment of indexing rotation to th ....etc

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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

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to get information about the topic hobbing machine full report ppt and related topic refer the page link bellow

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to get information about the topic hobbing machine full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-the-indexing-mechanism-of-gear-hobbing-machine

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I am subi s of S7 EE of MOHANDAS COLLEGE OF ENGG AND TECH.KINDLY HELP ME ON MY SEMINAR TOPIC 'ENERGY AUDITING AND REDUCTION OF LOSSES IN ELECTRICAL MACHINES.' ....etc

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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

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