Electricity: motive power systems – Positional servo systems – Adaptive or optimizing systems including 'bang-bang' servos
Patent
1977-11-28
1980-03-25
Dobeck, B.
Electricity: motive power systems
Positional servo systems
Adaptive or optimizing systems including 'bang-bang' servos
318572, 318626, 318632, 318634, G05B 1300
Patent
active
041952502
ABSTRACT:
In an automatic measuring apparatus and method for a numerically controlled machine tool, the dimension of a stylus secured to a cross slide and a desired dimension between two opposite points on a workpiece to be measured are inputted into an automatic measuring device in advance, the cross slide is moved under numerical control to bring the stylus into contact with the two points and to remove the stylus therefrom, and measurement of the amount of movement of the cross slide is started when the stylus leaves from one of the two points and the measurement is ended when the stylus leaves from the other point. The measurement value thus obtained, the dimension of the stylus and the desired dimension are subjected to addition and subtraction, thereby to automatically measure the actual dimension between the two points, and the difference between this actual dimension and the desired dimension.
REFERENCES:
patent: 3605531 (1971-09-01), Izumi et al.
patent: 3914678 (1975-10-01), Chynoweth et al.
patent: 4061952 (1977-12-01), Dinsdale et al.
patent: 4095377 (1978-06-01), Sugita
Dobeck B.
Ikegai Tekko Kabushiki Kaisha
Indyk Eugene S.
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