Controller for automatic tool changer

Details Controller for automatic tool changer Controller for automatic tool changer

1981-12-22

1983-08-09

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Adaptive or optimizing systems including 'bang-bang' servos

318467, 29568, 408 8, G05B 1300

Patent

active

043981364

ABSTRACT:
On a work machine such as a milling machine having a main spindle for chucking a tool and a mobile transfer arm assembly for replacing the tool under control by a numerical control device, a chucking repeat controller including a chucking repeat fixer, which is given in the form of either a counter or a time-limit timer, automatically repeats chucking operation by the main spindle upon detection of any failure in chucking operation, and intercepts all further operation of the main spindle and the transfer arm assembly for maintenance purposes when failure in the chucking operation has been repeated in succession for prescribed number of times, preferably with concurrent generation of some visible and/or audible alarm for operators' attention.

REFERENCES:
patent: 3517286 (1970-06-01), Stobbe
patent: 3733961 (1973-05-01), Reynolds
patent: 3775837 (1973-12-01), Tomita et al.
patent: 4195250 (1980-03-01), Yamamoto
patent: 4214191 (1980-07-01), Watanabe et al.
patent: 4300278 (1981-11-01), Nomura et al.
patent: 4366423 (1982-12-01), Inaba et al.

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