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Title: CNC MACHINES
Page Link: CNC MACHINES -
Posted By: seminar surveyer
Created at: Tuesday 04th of January 2011 03:49:33 PM
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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 ....etc

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Title: NC and CNC machines and Control Programming ppt
Page Link: NC and CNC machines and Control Programming ppt -
Posted By: seminar details
Created at: Friday 08th of June 2012 03:23:34 PM
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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 s ....etc

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Title: Automatic Bell For Schools and Colleges
Page Link: Automatic Bell For Schools and Colleges -
Posted By: project topics
Created at: Wednesday 22nd of December 2010 06:33:07 PM
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Abstract:
in this project we set the interval time and buzzer time through keypad. An internal clock will run inside the controller which will turn on the buzzer at the desired time periods. PC interface is provided so as to send the data to the computer and viz versa

....etc

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Title: STUDY ON PRINCIPLE AND OPERATIONS OF CNC MACHINES IN VARIOUS FABRICATION PROCESSES
Page Link: STUDY ON PRINCIPLE AND OPERATIONS OF CNC MACHINES IN VARIOUS FABRICATION PROCESSES -
Posted By: smart paper boy
Created at: Friday 29th of July 2011 11:55:07 AM
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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 ....etc

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Title: difference between nc cnc and dnc machines pdf
Page Link: difference between nc cnc and dnc machines pdf -
Posted By:
Created at: Sunday 01st of May 2016 04:17:03 AM
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The difference between NC and CNC is one of age andcapability.

The earliest NC machines performed limited functionsand movements controlled by punched tape or punch.

As the technology evolved, the machines were equiped with increasingly powerful microprocessors (computers) with the addition of these computers, NC machinesbecome CNC machines.

CNC machines have far more capability than theirpredecessor. ....etc

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Title: constructional features of cnc machines ppt
Page Link: constructional features of cnc machines ppt -
Posted By:
Created at: Saturday 02nd of March 2013 04:53:54 PM
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Title: bhel haridwar summer training report ppt on cnc machines
Page Link: bhel haridwar summer training report ppt on cnc machines -
Posted By:
Created at: Thursday 04th of October 2012 04:08:13 AM
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Title: difference between nc cnc and dnc machines pdf
Page Link: difference between nc cnc and dnc machines pdf -
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Title: difference between nc cnc and dnc machines pdf
Page Link: difference between nc cnc and dnc machines pdf -
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Title: NC and CNC machines and Control Programming
Page Link: NC and CNC machines and Control Programming -
Posted By: project report helper
Created at: Wednesday 20th of October 2010 12:58:38 PM
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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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