Cnc Machines

Cnc Machines
Link ID	3

Title	Cnc Machines
Url	http://www.cnc-machines.org/
Description	Cnc Machines is a complete information of cnc machines, cnc milling machines,cnc plasma cutting, cnc drilling machines,cnc mills and CNC Machining Centers. The abbreviation CNC stands for computer numerical control, and refers specifically to a computer “controller” that reads G-code instructions and drives a machine tool, a powered mechanical device typically used to fabricate components by the selective removal of material. CNC does numerically directed interpolation of a cutting tool in the work envelope of a machine. The operating parameters of the CNC can be altered via a software load program. CNC was preceded by NC (Numerically Controlled) machines, which were hard wired and their operating parameters could not be changed. NC was developed in the late 1940s and early 1950s by John T. Parsons in collaboration with the MIT Servomechanisms Laboratory. The first CNC systems used NC style hardware, and the computer was used for the tool compensation calculations and sometimes for editing.
Category	Cnc Machines
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Date	Sep 7, 2009
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