Electricity: motive power systems – Positional servo systems – Multiple mode systems
Patent
1980-10-03
1982-09-21
Truhe, J. V.
Electricity: motive power systems
Positional servo systems
Multiple mode systems
318594, 318631, G05B 1118
Patent
active
043509398
ABSTRACT:
A signal generating means including a half-round magnet attached to the spindle of a machine tool and mounted relative to a first reference indicator and a pair of opposingly mounted magnetic switches magnetically coupled to the magnet and mounted to a stationary portion of the machine tool and aligned relative to a second reference indicator for generating a first signal when the first magnetic switch is activated by the magnet, a second signal when the second magnetic switch is activated by the magnet; gating means, responsive to the first and second signals for generating an orient signal to orient the spindle to a reference position and a controller means for supplying to the spindle driving signals during the normal mode of operation and for supplying to the spindle during the orientation mode orient signals to cause the spindle to become aligned to the reference position.
REFERENCES:
patent: 3020459 (1962-02-01), Feigleson
patent: 3395323 (1968-07-01), Peters
patent: 3487283 (1969-12-01), Cook
patent: 3636425 (1972-01-01), Dickinson et al.
patent: 3721882 (1973-03-01), Helms
patent: 3757232 (1973-09-01), Matsuda
patent: 3777125 (1973-12-01), Whetham
patent: 3839664 (1974-10-01), Dirks et al.
patent: 4207504 (1980-06-01), Kawada et al.
Moose Richard M.
Seitzman Markell
The Bendix Corporation
Truhe J. V.
Wells Russel C.
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