Method and apparatus for checking and monitoring the accuracy of

Details Method and apparatus for checking and monitoring the accuracy of Method and apparatus for checking and monitoring the accuracy of

1974-03-05

1976-03-23

Dobeck, B.

Electricity: motive power systems

Positional servo systems

With protective or reliability increasing features

318568, G05B 1942

Patent

active

039462960

ABSTRACT:
The disclosure relates to a method and apparatus for checking and monitoring the movement of a tool carriage in response to a numerical controlled program. The path of movement of the tool carriage is recorded independently of the program control during the initial run of the carriage, in a manner capable of being subsequently sensed. The recorded path is thereafter sensed during the subsequent runs of the carriage and a signal is produced when the carriage deviates from the recorded path. The recording device includes a stationary supporting member having a surface upon which a drawing or etching may be made. The drawing or etching member is mounted to the movable carriage so as to become jointly movable therewith. The sensing member is mounted in conjunction with the drawing instrument and is interchangeable therewith during the sensing portion of the procedure.

REFERENCES:
patent: 3138750 (1964-06-01), Borger et al.
patent: 3164909 (1965-01-01), Rosenberg
patent: 3727119 (1973-04-01), Stanley et al.

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