Tool wear detector

Details Tool wear detector Tool wear detector

1990-03-23

1991-03-19

Raevis, Robert

Measuring and testing

Surface and cutting edge testing

B23Q 1709

Patent

active

050000365

ABSTRACT:
A tool wear detector is formed by applying a resistor, the resistance of which is permanently altered in accordance with a time/temperature relationship (and by change in size e.g. as a result of wear), to a tool in a manner so that the resistor and the portion of the tool to be monitored are subjected to corresponding temperature cycles. Measuring the resistance of the resistor at any time provides an indication of the cutting conditions to which the monitored portion of the tool has been subjected and thereby an indication of the remaining life of the portion of the cutting edge of the tool being monitored.

REFERENCES:
patent: 4757307 (1988-07-01), Keramati et al.
patent: 4818153 (1989-04-01), Strandell et al.
A Study on a Throw Away Tool Equipped with a Sensor to Detect Flank Wear--Aoyama et al., Bul. of Japan Society for Precision Eng., vol. 21, No. 3, Sep. 1987.
Some Observations on the Accelerated Ageing of Thick Film Resistors, Proceedings European Hybrid Microelectronics Conference, 1979--Sinnadurai et al.
A.S.M.E., Journal of Engineering for Industry, vol. 85 (1963), p. 33.

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