Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1981-02-23
1983-05-24
Crane, Daniel C.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
72125, 72422, 72420, 279 1G, B21D 914, B21D 1700, B21D 5328
Patent
active
043844669
ABSTRACT:
A hydraulic control circuit (10) for operating a loader (12) of a machine for splining an annular thin-wall sleeve of a power transmission member is disclosed as including valving (116) for communicating supply and return conduits (102,116) with load and unload cylinders (14,16) to provide loading and unloading movements. Load and unload valves (118,120) of the valving have load cycle positions where the load cylinder drives both the loading and unloading members (26,28) which clamp a thin-wall member during such movement to provide loading thereof for splining. In an unload cycle position of the valves, both the load and unload cylinders are hydraulically driven in an unloading direction opposite to the loading movement. The loading and unloading members (26,28) are moved away from each other by their associated cylinders in an index cycle of the valves to permit indexing of a load table (30) under the operation of an index valve (162) of the circuit.
REFERENCES:
patent: 3362059 (1968-01-01), Ponio et al.
patent: 3631704 (1972-01-01), Leonard
patent: 3982415 (1976-09-01), Killop
patent: 4155237 (1979-05-01), Jungesjo
Anderson-Cook Inc.
Crane Daniel C.
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