Metal deforming – With means to drive tool – Including screw-actuated tool support
Patent
1984-03-13
1986-01-14
Crane, Daniel C.
Metal deforming
With means to drive tool
Including screw-actuated tool support
7245302, 100289, B21J 918
Patent
active
045638896
ABSTRACT:
A screw press has a flywheel rotationally connected to the press spindle by way of a friction coupling. The spindle is displaced axially in a nut mounted in the upper cross member of the press frame, and the flywheel has external toothing with a width corresponding to the maximum pressing stroke plus the width of the driving pinions. A plurality of pinions engaging in the said toothed rim are each driven by an oil-hydraulic axial piston motor or by a pair of oil-hydraulic axial piston motors and the axial piston motors together with the pinions are disposed on a platform surrounding the upper cross member of the press frame. In order to reduce the structural expenditure and to increase the operational reliability, each axial piston motor or pair of axial piston motors associated with a pinion has associated with it on the platform a controllable pump which is driven by a respective electric motor and is reversible with respect to the flow direction.
REFERENCES:
patent: 3426574 (1969-02-01), Voronak
patent: 3830615 (1974-08-01), Walchhuetter
patent: 4207763 (1980-06-01), Huydts et al.
Hansenclever, "Hydraulically Driven Screw Presses HSPRZ", 6/1981, pp. 1-8, Maschinenfabrik Hasenclever GmbH, Witzelstr. 55, 4000 Dusseldorf 1.
Crane Daniel C.
Jones David B.
SMS Hasenclever Maschinenfabrik GmbH
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