Method of ultrasonic control for lapping and an apparatus theref

Details Method of ultrasonic control for lapping and an apparatus theref Method of ultrasonic control for lapping and an apparatus theref

1980-01-29

1981-06-16

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51118, 511313, 51283R, 73597, B24B 4904

Patent

active

042729246

ABSTRACT:
A novel method and apparatus are provided by the invention for the precision-control of the thickness of thin work pieces under lapping in a lapping machine having an upper and lower lapping surface plates rotatable relative to each other sandwiching the work pieces with continuous supply of a lapping fluid therebetween. In the invention, the upper lapping surface place is provided with an opening in the lapping surface, in which an ultrasonic transducer means is mounted capable of projecting an ultrasonic wave to the work piece and receiving the dual echo waves reflected at the upper and the lower surface of the work piece so as that the delay time of the echo waves is transmitted as electrical signals to a control means of the lapping machine where the signals are computed in terms of the thickness of the work pieces and utilized for controlling the operation of the machine. The space between the ultrasonic transducer means and the work piece is filled with the lapping fluid so that any errors in the propagation of the ultrasonic waves can be minimized.

REFERENCES:
patent: 3063206 (1962-11-01), Meyerhoff
patent: 3097458 (1963-07-01), Richmond
patent: 3579922 (1971-05-01), Mandonns
patent: 3994154 (1976-11-01), Niklas
patent: 4114455 (1978-09-01), Walker
patent: 4123943 (1978-11-01), Roddy
patent: 4197676 (1980-04-01), Sauerland

Affiliated with

Also associated with

Rating

Method of ultrasonic control for lapping and an apparatus theref does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-148920