Apparatus for automatic lapping control

Details Apparatus for automatic lapping control Apparatus for automatic lapping control

1979-02-09

1980-04-29

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51118, 318607, B24B 4904

Patent

active

041999029

ABSTRACT:
Apparatus for automatic lapping control, based on imbedding an electrode of special construction in a lapping plate of a lapping machine, including at least one piezoelectric wafer in the lapping load, sensing the resonance frequency of the piezoelectric wafers as they pass by the electrode, and automatically terminating the lapping when the resonance frequency equals or exceeds a target frequency; the special electrode construction comprising a facing of a dielectric material with a high dielectric constant and surrounded by an insulator having a low dielectric constant and an average wall thickness larger than its wall thickness at the surface of the lapping plate.

REFERENCES:
patent: 2340843 (1944-02-01), Bailey
patent: 2794951 (1957-06-01), Broding
patent: 3063206 (1962-11-01), Meyerhoff
patent: 3097458 (1963-07-01), Richmond
patent: 3579922 (1971-05-01), Madonas

Affiliated with

Also associated with

Rating

Apparatus for automatic lapping control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for automatic lapping control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for automatic lapping control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1678680