Device for driving a tool movable to and fro in axial direction

Details Device for driving a tool movable to and fro in axial direction Device for driving a tool movable to and fro in axial direction

F - Mech Eng,Light,Heat,Weapons

15

B

F15B 7/02 (2006.01) B25D 9/06 (2006.01)

Patent

CA 2086431

A device for driving a tool in axial direction in the course of a vibration-like forward and reverse movement, which operates at high efficiency with a rapidly oscillating stroke frequency and can be used as an easily handled hand-held appliance because, due to the drive, and especially advantageous ratio of the weight and volume to the power exerted at output is feasible. This drive consists of a piston (8) movable non-positively to and fro, which feeds oil to a working piston (22) and moves the latter correspondingly to and fro against the pressure of a spring (25) acting on the working piston (22) and against the external air pressure. The tool to be drive is preferably connected with the working piston (22) by means of the counterpressure spring (25). Working cylinder (20) and master cylinder (9) are connected with each other by a flexible hose (14) to prevent any weight transmission to the hand-held appliance.

Dispositif d'entraînement d'un outil dans le sens axial, avec un mouvement alternatif oscillant, l'outil travaillant avec une haute efficacité à une fréquence de course qui oscille rapidement, et pouvant être utilisé comme outil à main facile à manipuler, étant donné que le dispositif permet d'obtenir un rapport particulièrement avantageux entre le poids et le volume d'une part et la force exercée d'autre part pendant l'entraînement. Ce dispositif d'entraînement comprend un piston (8) animé d'un mouvement alternatif qui transmet de l'huile à un piston de travail (22) et déplace ce dernier en avant et en arrière contre la pression d'un ressort (25) qui agit sur le piston de travail (22) et contre la pression atmosphérique extérieure. L'outil à entraîner est relié au piston de travail (22) de préférence par un ressort de contre-pression (25). Le cylindre de travail (20) et le cylindre capteur (9) sont mutuellement reliés par un tuyau souple (14), afin d'éviter la transmission du poids à l'outil à main.

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