Controlling device for grinding piezo-electric element

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

1977-09-07

1979-12-25

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

324 56, B24B 4910

Patent

active

041798538

ABSTRACT:
A controlling device which takes out an electrical signal including, as its component, a natural frequency that is produced with grinding of a piezo-electric element, and makes the signal pass through two filters possessing equivalent damping amount at a desired natural frequency so as to bring the grinding operation to a stop when the dc conversion outputs of both filters coincide with each other.

REFERENCES:
patent: 2023494 (1935-12-01), Strieby
patent: 2476954 (1949-07-01), Blackburn
patent: 3395494 (1968-08-01), Sogn
patent: 3521166 (1970-07-01), Grayzel

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