US3889515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wedging structure for presses or the like
Assignee: National Machinery Co
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Filing: 1974-07-22
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Granted: 1975-06-17
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Expires: 1994-07-22
Abstract
Abstract A wedge system disclosed for adjustably positioned tools in a forging press or the like. The system includes a wedge positioned between two assemblies and provided with a locking taper. Hydraulic means permit a lubricant to be supplied under pressure to the surfaces of the wedge so that the wedge is released and can float laterally even when large loads are applied to the system as for example during a tooling jam. The system totally encloses the wedge chamber preventing scale or other contaminants from rusting, pitting, or scarring the wedge surface. Hydraulic means are provided to lock the wedge in an adjusted position and power means are provided to move the wedge for adjustment.
Inventors
- 👤 Walter J Grombka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:59
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/0029; B30B15/0047
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
100 words
A press or the like comprising a frame providing a die bed, a slide reciprocable in said frame toward and away from said die beD, and a wedge system on said die bed operable to adjustably position stationary dies in said press, said wedge system including a laterally movable wedge formed with a locking taper, and hydraulic means operable to supply a liquid under pressure to the interface between said wedge and the mating surfaces of said wedge system with sufficient pressure to release said wedge for lateral movement even when said slide is jammed in a dead center position.
Claim 2
Dependent Claim
100 words
A press or the like comprising a frame providing a die bed, a slide reciprocable in said frame toward and away from said die beD, and a wedge system on said die bed operable to adjustably position stationary dies in said press, said wedge system including a laterally movable wedge formed with a locking taper, and hydraulic means operable to supply a liquid under pressure to the interface between said wedge and the mating surfaces of said wedge system with sufficient pressure to release said wedge for lateral movement even when said slide is jammed in a dead center position.
Claim 3
Dependent Claim
139 words
A wedge system for presses or the like comprising first and second plate assemblies connected for movement in a first direction toward and away from each other, an inclined surface on one of said assemblies facing the other assembly, a wedge positioned between said inclined surface and said other assembly movable in a second direction substantially perpendicular to said first direction to permit movement of said assemblies in said one direction and to maintain them in adjusted positions, said wedge being formed with a locking taper whereby forces applied to said assemblies in said first direction do not cause movement of said wedge in said second direction, and hydraulic means to supply fluid under pressure along the operating surfaces of said wedge to permit movement thereof in said second direction even when substantial forces are applied to said assemblies.
Claim 4
Dependent Claim
139 words
A wedge system for presses or the like comprising first and second plate assemblies connected for movement in a first direction toward and away from each other, an inclined surface on one of said assemblies facing the other assembly, a wedge positioned between said inclined surface and said other assembly movable in a second direction substantially perpendicular to said first direction to permit movement of said assemblies in said one direction and to maintain them in adjusted positions, said wedge being formed with a locking taper whereby forces applied to said assemblies in said first direction do not cause movement of said wedge in said second direction, and hydraulic means to supply fluid under pressure along the operating surfaces of said wedge to permit movement thereof in said second direction even when substantial forces are applied to said assemblies.
Claim 5
Dependent Claim
30 words
A wedge system for presses or the like as set forth in claim 2 wherein said assemblies cooperate to enclose said wedge and prevent foreign matter from reaching said wedge.
Claim 6
Dependent Claim
25 words
A wedge system for presses or the like as set forth in claim 2 wherein said wedge is formed with a taper of about 4*.
Claim 7
Dependent Claim
35 words
A wedge system for presses or the like as set forth in claim 2 wherein releasable means are provided to apply forces urging said assemblies toward each other and loading the surfaces of said wedge.
Claim 8
Dependent Claim
29 words
A wedge system for presses or the like as set forth in claim 5 wherein positioning means are provided to engage and adjustably position said wedge within said assemblies.
Claim 9
Dependent Claim
39 words
A wedge system for presses or the like as set forth in claim 6 wherein said positioning means includes a pair of parallel screws threaded into said other assembly, and a gear drive connecting said screws for synchronized rotation.
Claim 10
Dependent Claim
26 words
A wedge system for presses or the like as set forth in claim 7 wherein power means are provided to urge said wedge toward said screws.
Claim 11
Dependent Claim
26 words
A wedge system for presses or the like as set forth in claim 6 wherein said positioning means include a screw threaded into said other assembly.
Claim 12
Dependent Claim
26 words
A wedge system for presses or the like as set forth in claim 9 wherein said releasable means operate to releasably lock said screw against rotation.
Claim 13
Dependent Claim
23 words
A wedge system for presses or the like as set forth in claim 10 wherein said releasable means are operated by hydraulic pressure.
Claim 14
Dependent Claim
42 words
A wedge system for presses or the like as set forth in claim 11 wherein seal means are provided between said operating surfaces of said wedge and the mating surfaces of said assemblies to confine the fluid under pressure to predetermined zones.
Claim 15
Dependent Claim
45 words
A wedge system for presses or the like as set forth in claim 12 wherein central openings are provided through said assemblies and said wedge to receive an ajector pin or the like, and said seal means prevents fluid under pressure from reaching said openings.
Claim 16
Dependent Claim
33 words
A wedge system for presses or the like as set forth in claim 13 wherein said seal means includes concentric spaced seals along each wedge surface and said zones are between said seals.
Claim 17
Dependent Claim
27 words
A wedge system for presses or the like as set forth in claim 14 wherein a cross passage is formed in waid wedge to connect said zones.
Claim 18
Dependent Claim
30 words
A wedge system for presses or the like as set forth in claim 15 wherein said assemblies cooperate to enclose said wedge and prevent foreign matter from reaching said wedge.
Claim 19
Dependent Claim
35 words
A wedge system for presses or the like as set forth in claim 16 wherein a sleeve extends along said openings between said assemblies to prevent foreIgn matter from reaching said wedge through said openings.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |