CNC machining is an innovation that has been in use since the 1950s when John T. Parsons collaborated with the MIT Servomechanisms Laboratory to develop it. Numerically Controlled (NC) technology preceded Computer Numerically Controlled (CNC) technology. NC machines utilized hardwired operating parameters so that the millers could only use one machine for one specific type of cut. This meant that if a miller wanted to use three different cuts, that miller had to have three different machines. Since CNC machining became available to millers, milling technology has advanced from having the ability to cut straight lines only to being able to cut curves as simply and easily as straight lines. Furthermore, CNC automation has enabled manufactures to duplicate products countless times with great accuracy. CNC automation also allows for more flexibility in the way machines hold parts in the manufacturing process as well as the time required to change the machine to produce different components.
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