Metal working – Means to assemble or disassemble – With work-holder for assembly
Patent
1978-08-18
1980-02-12
Jones, Jr., James L.
Metal working
Means to assemble or disassemble
With work-holder for assembly
2924352, 292835, B25B 2714
Patent
active
041875974
ABSTRACT:
A torsional vibration damper and method and apparatus for its manufacture. The outer inertia member carries a radially inwardly extending web, the web sandwiched by a pair of elastomer members. A two-piece hub sandwiches the elastomer members, the two hub pieces being held together as by swaging or by rivets. Tooling for the swaging mode of assembly is shown such that the elastomer members are deformed from an original to a final configuration, and the swaging then accomplished with a single continuous movement. The swaging assembly apparatus for the device includes Belleville springs, the apparatus limiting the maximum force applied to that portion of the hub members controlling the assembled elastomer thickness. The damper configuration facilitates low specific energy dissipation and large elastomer-to-metal interface area to thus tend to lower shear stress in the elastomer. In addition, should the elastomer fail in use, the damper inertia mass is mechanically constrained to remain with the hub assembly. The two hub pieces cause radial extrusion of the elastomer, the extruded portions contacting the inertia member, the latter guiding and defining the extrusions.
REFERENCES:
patent: 1777772 (1930-10-01), Shera
Greer, Jr. Thomas J.
Jones Jr. James L.
Wallace Murray Corporation
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