Machine tool analysis device and method

Details Machine tool analysis device and method Machine tool analysis device and method

2008-01-01

2008-01-01

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C340S680000

Reexamination Certificate

active

07315018

ABSTRACT:
The invention relates to a device and method for analysis of a tool (50) e.g. used on a machine tool. A tool detector (5) includes a light emitter (12) and a light receiver (34). Tool (50) when progressed into a beam (20) of light emitted from the emitter (12) will cause a signal from the receiver to change. Circuitry (32) includes a digital signal processor which processes the signal from the receiver and produces an output only if the signal conforms to a predetermined condition. Preferably this predetermined condition could be e.g. a characteristic shape of the signal from the receiver, a change in a value derived from a succession of such signals or a change in the minimum or maximum values of a succession of signals from the receiver.

REFERENCES:
patent: 4966460 (1990-10-01), Kahley
patent: 5004930 (1991-04-01), Gremaud et al.
patent: 5164995 (1992-11-01), Brooks et al.
patent: 5940787 (1999-08-01), Gelston
patent: 1 050 368 (2000-11-01), None

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