Title:
HYDRAULIC FORMING MACHINE FOR PRESSING WORKPIECES, MORE PARTICULARLY FORGING HAMMER, AND METHOD FOR OPERATING A HYDRAULIC FORMING MACHINE, MORE PARTICULARLY A FORGING HAMMER
Document Type and Number:
WIPO Patent Application WO/2022/157360
Kind Code:
A9
Abstract:
The underlying invention relates particularly to a hydraulic forming machine (1), more particularly a forging hammer (1), for workpiece forming, comprising a hydraulic cylinder (4) for driving a ram (2) designed for workpiece forming, and a hydraulic circuit (8) designed for operation of the hydraulic cylinder (4), wherein the hydraulic circuit (8) has an actuating member (12) with an adjustably variable volume flow via which a first hydraulic working space (9) of the hydraulic cylinder (4) used to accelerate the ram (2) during the execution of a working stroke (A) for workpiece forming can be provided with hydraulic fluid. The hydraulic circuit (8) is designed to adjust and to vary the volume flow of the valve (12) or actuating member depending on a target speed (Vsoll) of the ram (2) to be achieved in an acceleration phase of a working stroke (A) and to optimise the subsequent movement phase.
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Inventors:
OTTO MARKUS (DE)
Application Number:
PCT/EP2022/051490
Publication Date:
September 22, 2022
Filing Date:
January 24, 2022
Export Citation:
Assignee:
LANGENSTEIN & SCHEMANN GMBH (DE)
International Classes:
B30B15/16; B21J9/12
Attorney, Agent or Firm:
SCHRÖER, Gernot H. (DE)
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