Computer Aided Manufacturing (CAM) is one of the software automation processes that directly convert...

1. Computers & Technology :: History of Computer Aided
Manufacturing
Computer Aided Manufacturing (CAM) is one of the software automation processes that directly
convert the product drawing or the object into the code design that enables the machine to
manufacture the product. It is used in various machines like lathes and milling machines for the
product manufacturing purposes. It allows the computer work instructions to communicate directly
to the manufacturing machines.
The mechanism of CAM developed from the Computer Numerical Machines (CNC) in the early
1950's. These systems were directed by a set of coded instructions in a punched paper tape. The
proposal to develop the first numerically controlled machine was commissioned to the
Massachusetts Institute of Technology (MIT) from the US Air Force in the year 1949. The entire
proposed idea of developing this machine was demonstrated in the year 1952.
The motivation factor in developing these kinds of numerically automated machines involves the
expensive costs in manufacturing the complex curved geometries in 2D or 3D constraints
mechanically. The development of these machines considers the factors like easier programming in
CAM and easy storage of programs. A program can be changed easily and avoid manual errors.
Numerically controlled machines are safer to operate, and the complex geometry comes at a
reasonable price.
James T. Parsons proposed the concept of the numerical control operations during the year of 1948.
In 1950, the MIT servo mechanism lab developed the Numerical Control (NC) milling project. The
remaining program parts were released in the later period of 1952 along with the first successful
demo version. After 1955, major companies in the industry developed their own machine designs.
IBM's Automatic Tool Changer in the year 1955, G L's first production of the skin-miller in the year
1957, and the machining center developed by K T have all been considered to be major
developments to promote the technology with more benefits. CAD drafting and the sculptured
surfaces were developed in the year 1965; 7,700 NC's were also installed during the same year.
During the year 1967, the concept of developing the CNC machine was proposed. The existence and
the major development of the CAD/CAM machines evolved during the year 1972. 3D CAM/CAD
systems were introduced in 1976. Expert CAM/CAD systems were developed in the year 1989. The
major development of the CAM systems provides you with easier manufacturing of objects with high
efficiency.
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