US4983797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing a composite camshaft
Assignee: Dana Inc
•
Filing: 1989-12-29
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Granted: 1991-01-08
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Expires: 2009-12-29
Abstract
Abstract An improved method for manufacturing a camshaft. A robot positions a drive gear on a shaft and the gear is laser welded to the shaft. The cam lobes are axially and rotatively positioned on the shaft utilizing a robot and are laser welded to the shaft. Bearing journal sleeves also may be axially positioned on the shaft by a robot and may be laser welded to the shaft. Preferably, the gear, the cam lobes and any bearing journal sleeves are welded utilizing a robot mounted laser welder to achieve fully automated production.
Inventors
- 👤 David K. McAllister
- 👤 Russell E. Hite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/08; B23K26/0869; B23K26/0876; B23K26/0884; B23K26/0823; F; F01; F01L; F01L1/00; F01L1/02; F01L1/04; F01L1/047; F16; F16H; F16H53/00; F16H53/02; F16H53/025; F01L2303/00; F01L2303/01; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49293; Y10T29/49462; Y10T29/49465; Y10T74/00; Y10T74/21; Y10T74/2101
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
42 words
A method for manufacturing a camshaft comprising the steps of: (a) utilizing a robot to position a cam lobe at a selected axial and rotative position on a cylindrical shaft; and (b) securing said cam lobe to said shaft by laser welding.
Claim 2
Independent Claim
42 words
A method for manufacturing a camshaft comprising the steps of: (a) utilizing a robot to position a cam lobe at a selected axial and rotative position on a cylindrical shaft; and (b) securing said cam lobe to said shaft by laser welding.
Claim 3
Dependent Claim
53 words
A method for manufacturing a camshaft, as set forth in claim 1, and further including the steps of (c) utilizing said robot to position at least one additional cam lobe at a selected axial and rotative position on said shaft; and (d) securing said additional cam lobe to said shaft by laser welding.
Claim 4
Dependent Claim
26 words
A method for manufacturing a camshaft, as set forth in claim 2, wherein each of said cam lobes is welded to said shaft by laser welding.
Claim 5
Dependent Claim
29 words
A method for manufacturing a camshaft, as set forth in claim 2, wherein said cam lobes are secured to said shaft by welding with a robot mounted laser welder.
Claim 6
Dependent Claim
42 words
A method for manufacturing a camshaft, as set forth in claim 4, and further including the steps of utilizing a robot to position,a gear on said shaft, and securing said gear to said shaft by welding with a robot mounted laser welder.
Claim 7
Dependent Claim
46 words
A method for manufacturing a camshaft, as set forth in claim 5, wherein said gear is positioned on and secured to said shaft prior to positioning and securing a cam lobe on said shaft, and wherein said cam lobes are rotatively positioned relative to said gear.
Claim 8
Dependent Claim
53 words
A method for manufacturing a camshaft, as set forth in claim 6, and further including the steps of utilizing a robot to axially position at least one bearing journal sleeve on said shaft and securing said at least one bearing journal sleeve to said shaft by welding with a robot mounted laser welder.
Claim 9
Dependent Claim
48 words
A method for manufacturing a camshaft, as set forth in claim 1, and further including the steps of utilizing a robot to axially position at least one bearing journal sleeve on said shaft and securing said at least one bearing journal sleeve to said shaft by laser welding.
References Cited (Backward Citations)
US3444759A
Cited
US3999277A
Cited
US4293995A
Cited
US4118848A
Cited
US4438555A
Cited
US4620454A
Cited
US4575913A
Cited
US4508495A
Cited
US4612695A
Cited
US4644912A
Cited
US4616389A
Cited
US4620356A
Cited
US4708029A
Cited
US4606150A
Cited
US4597365A
Cited
US4660269A
Cited
US4693138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-07 | 2002-07-09 | 2003-01-08 | $7700.00 | Window Closed / Lapsed |