description John T. Parsons Overview
John T. Parsons was an American engineer and inventor whose work helped establish numerical control for machine tools, a foundation of modern computer numerical control manufacturing. In the late 1940s, he developed a method that used punched-card data and calculated coordinates to guide machining of helicopter rotor blades. His concepts were subsequently developed with the Massachusetts Institute of Technology into an automated milling system.
help John T. Parsons FAQ
What did John T. Parsons help invent?
John T. Parsons helped establish numerical control for machine tools. Numerical control was a foundation for the computer numerical control systems used in modern manufacturing.
When did John T. Parsons develop his machine-tool method?
His important development work took place in the late 1940s. The method used calculated coordinates to guide machine-tool operations.
How did punched cards fit into Parsons' numerical-control system?
Punched-card data provided the machine with coordinate information for a tool path. This turned calculated instructions into repeatable movements for a machine tool.
Is Parsons' numerical control the same as modern CNC?
No, the original numerical-control approach was an early foundation rather than the same thing as later computer numerical control. Parsons' late-1940s work helped establish the coordinate-based method that CNC later developed.
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