Electric heating – Metal heating – By arc
Patent
1975-02-26
1977-04-19
Truhe, J. V.
Electric heating
Metal heating
By arc
B23K 1500
Patent
active
040190153
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 position 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 to 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: 3644700 (1972-02-01), Kruppa et al.
patent: 3648048 (1972-03-01), Cahan et al.
patent: 3651303 (1972-03-01), Rehme et al.
patent: 3699334 (1972-10-01), Cohen et al.
patent: 3842236 (1974-10-01), Von Walter
Hassan Javathu K.
Rabstejnek Carl V.
Wutka Anthony D.
Dick William J.
International Business Machines - Corporation
Shaw Clifford C.
Truhe J. V.
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