Title:
DEVICE FOR CONTROLLING PRESSURE IN PRESSURE CHAMBER FOR DYNAMIC AND HYDRAULIC PRESSURE TYPE THROTTLING
Document Type and Number:
Japanese Patent JPS56124703
Kind Code:
A
Abstract:
Device for the control of the pressure in the pressure chamber for the hydromechanical deep drawing of sheet metal in hydraulic presses wherein the pressure chamber constitutes the drawing die. The control system has at least one two-diametered piston transmitter mounted in a hydraulic cylinder which on the side of the smaller diameter of the piston of the piston transmitter is connected to the space of the pressure chamber and on the other, larger diameter side of the piston transmitter is provided with a supply line for the pressure medium. The control system may include several hydraulic cylinders with two-diameter piston transmitters, the volume of the parallel hydraulic cylinders at the side of the smaller diameters of pistons of the piston transmitters is equal to, or greater than, the volume of the pressing in the pressure chamber.
Inventors:
IENDORUSHIIICHI SHIYUBACHIYAKU
WATSURAU SUMERUCHIYAKU
KARARU UODA
IERUSHII KOSAKU
YAN HIRUDENA
WATSURAU PANIYAASU
WATSURAU SUMERUCHIYAKU
KARARU UODA
IERUSHII KOSAKU
YAN HIRUDENA
WATSURAU PANIYAASU
Application Number:
JP17474880A
Publication Date:
September 30, 1981
Filing Date:
December 12, 1980
Export Citation:
Assignee:
TOVARNE STROJARSKEJ TECH
International Classes:
F15B7/00; B21D22/20; (IPC1-7): F15B7/00