US3699719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic machining
Assignee: Individual
•
Filing: 1971-01-25
•
Granted: 1972-10-24
•
Expires: 1991-01-25
Abstract
Abstract The speed of ultrasonic abrasive slurry machining is improved by providing alternate periods during which the vibrating tool while urged against the workpiece is active and inactive.
Inventors
- 👤 Nicholas Rozdilsky
- 👤 Hans J Wilkens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:30
CPC Classifications
B; B24; B24B; B24B57/00; B24B57/02; B24B1/00; B24B1/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
88 words
A method of ultrasonic machining comprising: positioning an ultrasonic tool adjacent a workpiece; urging contact between said tool and workpiece; supplying an abrasive slurry between the tool and workpiece to cause abrading machining of said workpiece by said tool, and periodically vibrating the tool at its resonant frequency for predetermined spaced intervals of time while said tool is urged into contact with the workpiece to provide successive periods in which the tool is rendered alternately active and inactive thereby to substantially increase the cutting speed of the tool.
Claim 2
Independent Claim
88 words
A method of ultrasonic machining comprising: positioning an ultrasonic tool adjacent a workpiece; urging contact between said tool and workpiece; supplying an abrasive slurry between the tool and workpiece to cause abrading machining of said workpiece by said tool, and periodically vibrating the tool at its resonant frequency for predetermined spaced intervals of time while said tool is urged into contact with the workpiece to provide successive periods in which the tool is rendered alternately active and inactive thereby to substantially increase the cutting speed of the tool.
Claim 3
Dependent Claim
18 words
The method claimed in claim 1 wherein the active periods of the tool are of equal time duration.
Claim 4
Dependent Claim
19 words
The method claimed in claim 2 wherein the inactive periods of the tool are also of equal time duration.
Claim 5
Dependent Claim
23 words
The method claimed in claim 1 wherein the active periods of the tool are of longer time duration than the inactive periods thereof.
Claim 6
Dependent Claim
23 words
The method claimed in claim 3 wherein the active periods of the tool are of longer time duration than the inactive periods thereof.
Claim 7
Dependent Claim
118 words
An ultrasonic machining apparatus comprising: electro-acoustic means to receive electrical energy and provide vibrations in the ultrasonic frequency range; a tool coupled to said electro-acoustic means to receive said vibrations; means urging said tool into mechanical contact with a workpiece; means for providing an abrasive slurry between said tool and workpiece for abrading machining of said workpiece by said tool, and control means coupled to said electro-acoustic means operable to periodically vibrate the tool at its resonant frequency for predetermined spaced intervals of time while said tool is urged into contact with the workpiece to provide successive periods in which the tool is rendered alternately active and inactive thereby to substantially increase the cutting speed of the tool.
Claim 8
Dependent Claim
118 words
An ultrasonic machining apparatus comprising: electro-acoustic means to receive electrical energy and provide vibrations in the ultrasonic frequency range; a tool coupled to said electro-acoustic means to receive said vibrations; means urging said tool into mechanical contact with a workpiece; means for providing an abrasive slurry between said tool and workpiece for abrading machining of said workpiece by said tool, and control means coupled to said electro-acoustic means operable to periodically vibrate the tool at its resonant frequency for predetermined spaced intervals of time while said tool is urged into contact with the workpiece to provide successive periods in which the tool is rendered alternately active and inactive thereby to substantially increase the cutting speed of the tool.
Claim 9
Dependent Claim
31 words
Apparatus as claimed in claim 6 wherein the control means includes timing mechanism operable to provide active tool periods of equal time duration and inactive tool periods of equal time duration.
Claim 10
Dependent Claim
28 words
Apparatus as claimed in claim 7 wherein the timing mechanism is operable to selectively vary the time durations of the active and inactive periods of the tool respectively.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |