Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Counting based on number of times machine or apparatus operates
Patent
1988-03-14
1989-12-26
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Counting based on number of times machine or apparatus operates
377 16, 377 20, 409234, 408 6, 408 16, 29568, B23Q 315, B23B 4900, G06M 306
Patent
active
048903060
ABSTRACT:
A tool holder for monitoring the service time of a tool holded on the tool holder is disclosed. A sensor and electric circuit are provided for determining whether or not the machining operation with the tool is executed. Counters are provided for counting time cumulatively during the time when the machining operation is executed, and store the cumulative time as the service time of the tool. The service time is output to a numerical control apparatus via an output device.
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patent: 4389709 (1983-06-01), Knibiehler et al.
patent: 4395624 (1983-07-01), Wartski
patent: 4399548 (1983-08-01), Castleberry
patent: 4501005 (1985-02-01), Miller
patent: 4588339 (1986-05-01), Bilz
patent: 4702650 (1987-10-01), Golwas et al.
patent: 4773800 (1988-09-01), Furuhashi et al.
Heyman John S.
Toyoda Machine Works, Ltd.
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