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Computer numerical control machine tool

  • US 4,199,814 A
  • Filed: 10/12/1977
  • Issued: 04/22/1980
  • Est. Priority Date: 10/12/1977
  • Status: Expired due to Term
First Claim
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1. In a computer numerical control for point-to-point positioning and programming of a machine tool on at least two axes, said control being physically adjacent and electrically connected to the machine tool and having programming and control functions for said machine tool, said control comprising:

  • (a) an input terminal having a keyboard with alpha-numeric input plus functional control keys;

    (b) disply means for showing the position of the machine tool at any time in X and Y coordinates, and having a display means which may be selectively used to output position number, tool number, and feed rate information;

    (c) a microprocessor having an arithmetic logic unit, a CPU, RAM and ROM store and data and address handling means;

    (d) a cassette tape input means with control logic therefor to input a computer program into store and to tape a program in store; and

    (e) control means including functional keys for causing the stored program to direct and control the machine tool together with other control means for inputting into store, machine language instructions directly on the terminal, thereby modifying a stored program or building one.

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