Ngk Insulators, Inc.

Lasson Technologies, Inc.

Jerome Eichenberger

Chris Keller

Shuhei Toyoda

Yasunori Iwasaki

Marvin E Klein

Bruno F Pouet

Dynamic vibration monitoring of a cutting tool or workpiece is provided by propagating an ultrasonic carrier beam in a stream of fluid flowing from a probe chamber, which includes a transducer, to the cutting tool or workpiece target area. The modulated ultrasonic beam reflected from the target is detected via a transducer in the chamber, and is demodulated to provide measurements of vibrational surface displacement and velocity. The method is insensitive to the target surface roughness and can be used for dynamic characterization prior to machining, and for monitoring during the machining operation. The device is inexpensive and robust to the machining environment, and can be applied to small cutting tools.

Method and device for ultrasonic vibration detection during high-performance machining

Three alternate fiber ribbon interconnections are described for optically interfacing two 4-channel optoelectronic transceiver modules, each module having separate, spaced apart transmitter and receiver diode arrays. In each instance the optical interconnection is made by either an 8 fiber or a 12 fiber ribbon and associated fiber end connectors.

Optical interface for 4-channel opto-electronic transmitter-receiver

Optoelectronic transceiver modules having photoemitter and photodetector arrays spaced from each other are interfaced to a single optical fiber ribbon having evenly spaced optical fibers.

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Los Angeles, CA, United States of America

Jerome Eichenberger