Metal deforming – With means to drive tool – With means to selectably control movement of tool
Patent
1985-10-29
1987-04-14
Spruill, Robert L.
Metal deforming
With means to drive tool
With means to selectably control movement of tool
72 2, 72389, 7245301, 251295, 25112908, B21J 746, F16K 3102
Patent
active
046568620
ABSTRACT:
The present invention relates to a press machine that has a vertically movable ram for supporting upper or lower bending tools, said ram being integrally provided with an operation member, and a position determining member having an adjustable position located at a suitable point on said press machine such that when the operation member on the ram contacts the position determining member, the vertical movement of the ram is stopped. The press machine further includes a screw mechanism that is screw-coupled to the position determining member and is movable in an axial direction, a pulse motor drive unit which turns the threaded bolt, and a manual pulse generator for operating the pulse motor from a remote location.
REFERENCES:
patent: 3247912 (1966-04-01), Reynolds
patent: 4170124 (1979-10-01), MacGregor
patent: 4314585 (1982-02-01), Nishimiya et al.
patent: 4466337 (1984-08-01), Eiler
Akami Ichio
Amano Tadashi
Kogure Tsuneo
Sekita Katsuji
Takahashi Hideaki
Amada Company Limited
Jones David B.
Spruill Robert L.
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