Controlling device for grinding piezo-electric element

Details Controlling device for grinding piezo-electric element Controlling device for grinding piezo-electric element

1977-07-22

1979-02-06

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

B24B 4904

Patent

active

041376765

ABSTRACT:
A device for controlling the grinding of a piezo-electric element is designed to convert the frequency of an electric signal produced with grinding of a piezo-electric element into a lower frequency, using frequency converters and a local oscillator and then to select, by means of filters, a frequency generated from the frequency converters at the time when a desired grinding of a piezo-electric element has been obtained so as to bring the grinding operation to a stop in response to the selected signal.

REFERENCES:
patent: 2340843 (1944-02-01), Bailey
patent: 3097458 (1963-07-01), Richmond
patent: 3579922 (1971-05-01), Mandonas
patent: 3691695 (1972-09-01), Green
patent: 4063910 (1977-12-01), Huguenin

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