Patent ID: 6276491
Filing Date: 2001-08-21
Classification: F16C,G05D,Y10T

Abstract:
A controller for controlling a medium flow fed from a medium supply to at least one hydrostatic or aerostatic pocket of a bearing, a threaded spindle nut or a guide, having a controller housing with a mating surface and having pressure chambers which are separated by a control element, movable against the force of a spring element, and of which a first pressure chamber, subjected to a first pressure level, is directly connected to the medium supply, a second pressure chamber, subjected to a lower, second pressure, is connected to the medium supply via a first flow resistance, and a third pressure chamber, which is subjected to a third pressure level which corresponds to that in the hydrostatic pocket, is connected to the hydrostatic or aerostatic pocket, said control element forming a variable second flow resistance which is arranged between the second and third pressure chambers and influences the medium flow fed to the pocket, the magnitude of the variable second flow resistance being raised by the action of the force of the first pressure chamber but is lowered by the action of the spring force and by the actions of the forces of the second and third pressure chambers, wherein the mating surface is assigned to the bearing, the threaded spindle nut or the guide, and wherein the controller housing has a bearing surface, comprising a passage orifice for the medium flow, with the aid of which in the mounted state the controller housing bears against the mating surface assigned to the bearing, the threaded spindle nut or the guide, thus creating a direct medium connection between the controller and pocket and, if appropriate, between the controller and the medium supply.