Oleopneumatic intensifier cylinder

Details Oleopneumatic intensifier cylinder Oleopneumatic intensifier cylinder

F - Mech Eng,Light,Heat,Weapons

15

B

138/84.2

F15B 15/14 (2006.01) F15B 11/032 (2006.01)

Patent

CA 2025641

An oleopneumatic load intensifier apparatus for creating a rapid advance of a tool carrying piston rod followed by slow advance of the piston rod at an increased load. The apparatus has a master cylinder and an actuating cylinder that can assume different positions with respect to the master cylinder while maintaining fluid communication therewith. An enclosed hydraulic system is shared by the master and actuating cylinders. Pneumatic pressure actuates a piston within the master cylinder that causes a rapid advancement of a hydraulically fed piston within the actuating cylinder, causing a piston rod and a tool associated therewith to contact a workpiece. Pneumatic pressure then causes a piston and associated piston rod, located in the master cylinder, to increase the hydraulic pressure in the line to the hydraulically fed piston located within the actuating cylinder, thus, increasing the load delivered to the workpiece.

La présente invention porte sur un multiplicateur de pression oléopneumatique pour produire l'avance rapide d'une tige de piston porte-outil suivie d'une avance lente à une pression accrue. L'appareil comprend un vérin principal et un vérin de commande qui peut prendre différentes positions par rapport au vérin principal tout en continuant d'assurer la circulation du fluide avec ce dernier. Un circuit hydraulique enfermé est partagé par le vérin principal et le vérin de commande. La pression pneumatique actionne le piston du vérin principal qui provoque l'avance rapide du piston hydraulique du vérin de commande, permettant à la tige de piston et à l'outil connexe de toucher la pièce à travailler. La pression pneumatique agit ensuite sur le piston et la tige de piston connexe du vérin principal pour augmenter la pression hydraulique dans la conduite vers le piston hydraulique du vérin de commande, ce qui, par conséquent, augmente la pression exercée sur la pièce à travailler.

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