The
highly sophisticated CNC machine tools of today, in the vast and diverse range
found throughout the field of manufacturing processing, started from very
humble beginnings in a number of the major industrialized countries. Some of
the earliest research and development work in this field was completed in the
USA and a mention will be made of the UK's contribution to this numerical
control development.
A major problem occurred just after the Second World War, in that progress in all areas of military and commercial development had been so rapid that the levels of automation and accuracy required by the modern industrialized world could not be attained from the labour intensive machines in use at that time. The question was how to overcome the disadvantages of conventional plant and current manning levels.
It is generally acknowledged
that the earliest work into numerical control was the study commissioned in
1947 by the US government. The study's conclusion was that the metal cutting
industry throughout the entire country could not cope with the demands of the
American Air Force, let alone the rest of industry! As a direct result of the
survey, the US Air Force contracted the Parsons Corporation to see if they
could develop a flexible, dynamic, manufacturing system which would maximise
productivity.
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