Metal deforming – With means to drive tool – With means to selectably control movement of tool
Patent
1996-10-30
1998-02-03
Jones, David
Metal deforming
With means to drive tool
With means to selectably control movement of tool
72 30, 298931, 294011, 100 53, 744115, B30B 1514, B23P 1100
Patent
active
057132372
ABSTRACT:
A slide lock is adapted for positioning within the upper portion, or crown, of a stamping press adjacent its eccentric gears. The slide lock includes a hydraulically actuated, electrically controlled module pivotally mounted to the press crown and including an acme screw and pivoting nut combination, a sector gear, an eccentric, and a sliding block attached to the eccentric. Locking of the slide of the press at any position of the press stroke is initiated by the linear displacement of the slide lock module and by rotating the eccentric to lower the slide lock module toward an eccentric gear. If the sector gear is able to fully mesh with the eccentric gear, the slide lock will continue to lower, with the eccentric rotating beyond its centerline, or beyond bottom dead center, until it contacts a closed, or locked, mechanical stop. The sector gear and eccentric gear are fully in mesh with the eccentric in an axial positive mechanical locked position to prevent press eccentric gear rotation and slide movement. If the sector and eccentric gears are unable to mesh, a hydraulic motor coupled to the acme screw linearly displaces the slide lock module through a pressure sensor control so that the sector gear is able to mesh with the eccentric gear. Rotation of the eccentric continues until the sector and eccentric gears are completely meshed and the eccentric is in the axial positive mechanical locked position with press eccentric gear rotation prevented and the press slide locked in fixed position.
REFERENCES:
patent: 2417781 (1947-03-01), Patrick
patent: 3704757 (1972-12-01), Bures, III
patent: 5048410 (1991-09-01), Teramoto et al.
patent: 5157983 (1992-10-01), Sankovic
patent: 5269059 (1993-12-01), Rozenbojm
patent: 5357780 (1994-10-01), Brandstetter et al.
patent: 5513561 (1996-05-01), Biliskov, Jr. et al.
patent: 5603237 (1997-02-01), Bohman et al.
Publication entitled "Slide Lock for Gear-Driven Presses," published in Metal Forming, Oct., 1994.
Clearing Niagara, Inc.
Jones David
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