Working of a CNC Machine

Working of a CNC Machine
A CNC Machine is used for mass production. A CNC machine can be used in industry to create items very fast - like hundreds of articles in a day. Making my hand is not feasible today.

For example you want to make an item out of wood. I would normally take a whole day for a skilled artisan to make that item. But the same can be done in less than a minute using an industrial cnc machine.
CNC machines are of various types. They can work on a wide range of materials - both soft and hard ones.
THe soft materials can be wood, plastics, rubber, etc.
And any hard materials can also be used. There are different machines for different types of materials.

A small cnc machines normally used in small labs and schools is shown above.
The different parts are shown in figure.
Courtesy - technologystudent.com

Laser Engraving Machines

Laser Engraving Machines are widely used in modern Industrial Applications.
Laser engraving is the practice of lasers engrave or mark an object (it is also sometimes incorrectly described as etching, which involves the use of acid or a similar chemical). The technique can be very technical and complex, and often a computer system is used to drive the movements of the laser head. Despite this complexity, very precise and clean engravings can be achieved at a high rate. The technique does not involve tool bits which contact the engraving surface and wear out. This is considered an advantage over alternative engraving technologies where bit heads have to be replaced regularly.
The impact of laser engraving has been more pronounced for specially-designed "laserable" materials. These include polymer and novel metal alloys.
Materials which can be engraved:

Woods
Plastics
Metals
Coated Metals
Stone and Glass

Laser Engraving Machines are widely used in Industrial Applications

Cutting
Printing
Sub Surface Laser Engraving
Direct Laser Imaging

So Laser Engraving Machines are used in a wide range of industries. Some important sites of manufacturers:
http://www.ulsinc.com/
http://www.electrox.com/
http://www.epiloglaser.com/
http://www.trotec.net/
http://www.hglaser.com/
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