Precision tool and workpiece positioning apparatus

Details Precision tool and workpiece positioning apparatus Precision tool and workpiece positioning apparatus

1975-04-24

1977-04-05

Dobeck, B.

Electric heating

Metal heating

By arc

318573, 318617, 318601, G05B 1118

Patent

active

040163962

ABSTRACT:
Apparatus for positioning a workpiece and tool in a precise location relative to each other by positioning in a predetermined site the workpiece, and then positioning the tool in a precise predetermined positon relative to the site in minimum total time. The apparatus comprises a closed loop position and velocity sensitive servo system connected to the workpiece, the servo system including positioning apparatus for positioning the workpiece in a predetermined site. A position indicator determines the actual position of the workpiece relative to a fixed reference and emits a signal output which is compared, in an error generator, with the desired position of the workpiece relative to the reference. The difference signal, from the error generator, is applied to the positioner and is used to bring the workpiece into the site. The positioner is provided with velocity feedback which cooperates with the positioning signal from the error generator to drive the workpiece into the predetermined site. Thereafter the error between the actual position address and the desired position address, although very small, is fed to second apparatus for positioning the tool a very small amount to precisely position the tool relative to the workpiece.

REFERENCES:
patent: 2674708 (1954-04-01), Husted
patent: 3142018 (1964-07-01), Eisengrein
patent: 3323030 (1967-05-01), Inaba et al.
patent: 3449754 (1969-06-01), Stutz
patent: 3651303 (1972-03-01), Rehme
patent: 3719879 (1973-03-01), Marcy
patent: 3733484 (1973-05-01), Bayard
patent: 3904945 (1975-09-01), Hassan et al.

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