JPS5597506A - Fluid pressure cylinder for generating vibration - Google Patents

Abstract

PURPOSE: To obtain high frequency oscillation having good response and high output by fitting a piston in the cylinder body provided with a supply port and an exhaust port for pressure fluid and applying the supply and exhaust of the pressure oil to two fluid chamber with different pressure-receiving areas using a rotary valve.

CONSTITUTION: The rotor's ports 55, 54 get pressure corresponding to the supply and return sides, respectively, when supply pressure oil is applied to No.2 fluid chamber 13 at the upper left of the piston 2, i.g. the smaller pressure-receiving area 23. When a valve rotor is turned, the open port 45 comes into communication with the rotor ports 54, 55 alternately and the supply fluid stops at the rotor port 55 while it is in communication with the rotor port 54. The exhaust port 32 is, on the contrary, put into communication with No.1 fluid chamber 12, when the piston 2 shifts to the right as the fluid pressure in No.2 fluid chamber is higher. When the open port 45 is in communication with the rotor port 55, pressure is applied to both No.1 and No.2 fluid chambers 12, 13 alike as the abovementioned state, and because the pressure receiving areas 22 is larger than the pressure receiving area 23, the piston 2 shifts to the left and the supply port 31 is put into communication with the exhaust port 32, actuating the piston 2 into vibratory operation.

COPYRIGHT: (C)1980,JPO&Japio