US3635108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser-guided boring tool for deep hole boring
Assignee: United States Department of the Navy
•
Filing: 1970-03-09
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Granted: 1972-01-18
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Expires: 1990-03-09
Abstract
Abstract A boring tool is provided with a centering detector onto which a laser beam is directed. Deviation of the boring tool is detected and fed to a control unit and servo device which operates a pair of pusher pads to direct the boring tool back onto center. The boring tool is particularly adaptable for boring deep holes such as in large gun barrels.
Inventors
- 👤 Thomas E Prince
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:25
CPC Classifications
B; B23; B23Q; B23Q17/00; B23Q17/24; B23B; B23B41/00; B23B41/02; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/175; Y10T408/44; Y10T408/45; Y10T408/455; Y10T408/57; Y10T82/00; Y10T82/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
133 words
A guided boring device for deep hole boring comprising, a tubular boring bar having a cutter heaD on the forward end thereof, a centering detector having a quadrature array of detectors attached to the aft side of said cutter head, said centering detector providing an electrical output proportional to the direction and amount of movement of said cutter head from a centered position, a laser for projecting a laser beam onto said centering detector, pusher pad means attached to said tubular boring bar adjacent said cutter head and engageable with the surface of a hole being bored, and means connected to said electrical output of said centering detector for actuating said pusher pad means whereby said cutter head is returned to a centered position to provide a null condition on said centering detector.
Claim 2
Dependent Claim
133 words
A guided boring device for deep hole boring comprising, a tubular boring bar having a cutter heaD on the forward end thereof, a centering detector having a quadrature array of detectors attached to the aft side of said cutter head, said centering detector providing an electrical output proportional to the direction and amount of movement of said cutter head from a centered position, a laser for projecting a laser beam onto said centering detector, pusher pad means attached to said tubular boring bar adjacent said cutter head and engageable with the surface of a hole being bored, and means connected to said electrical output of said centering detector for actuating said pusher pad means whereby said cutter head is returned to a centered position to provide a null condition on said centering detector.
Claim 3
Dependent Claim
42 words
A guided boring device for deep hole boring as set forth in claim 1 wherein said tubular boring bar has a plurality of guidance rings thereon, said guidance rings being slightly smaller in diameter than the diameter of a hole being bored.
Claim 4
Dependent Claim
33 words
A guided boring device for deep hole boring as set forth in claim 1 wherein said means comprises a control unit for operating a hydraulic valve adaptable for actuating said pusher pad means.
References Cited (Backward Citations)
US3287998A
Cited
US3517966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |