Title:
PRESSURE CONTROL APPARATUS IN PRESSURE CHAMBER FOR FLUID MECHANICAL DRAWING PROCESS
Document Type and Number:
Japanese Patent JPS5844921
Kind Code:
A
Abstract:
The invention relates to a device for controlling the pressure in the pressure chamber for the hydromechanical drawing on a hydraulic press in which the pressure chamber filled with fluid forms the actual drawing die. The object of the invention is to expand the control range in the control of the pressure and to further improve the energy balance during drawing. The invention achieves this object by virtue of the fact that the device consists at least of a pair of piston units with piston rods which are connected to one another by a double-armed pivot lever, the pivot point of which is longitudinally adjustable, the first piston unit being connected to the space of the pressure chamber, and the second piston unit being attached with its hydraulic outlet to the main space of the working cylinder of the hydraulic press at least by means of a non-return valve.
Inventors:
BAAKURAFU PENIYAAZU
IRI KOSEKU
IYAN HIRUDEINA
INDORICHI SHIYUPACHIEKU
BAAKURAFU SUMURUCHIEKU
IRI KOSEKU
IYAN HIRUDEINA
INDORICHI SHIYUPACHIEKU
BAAKURAFU SUMURUCHIEKU
Application Number:
JP10152882A
Publication Date:
March 16, 1983
Filing Date:
June 15, 1982
Export Citation:
Assignee:
TOBAARUNI SUTOROIEERENSUKII TE
International Classes:
B21D22/20; (IPC1-7): B21D22/20
Attorney, Agent or Firm:
Aoki Akira