System for supplying hydraulic fluid to aggregates on spindles or the like
AssigneeIndex-Werke GmbH & Co. KG Hahn & Tessky
InventorHelmut Link
Life of this patent
Estimating the term…
Abstract
A multiple-spindle machine tool or a multi-speed transmission wherein the spindles or shafts carry several fluid-operated aggregates in the form of clutches, brakes and/or work clamping devices which receive pressurized fluid by way of axially movable spools mounted in or surrounding the respective spindles or shafts. The spools are movable axially by a stationary cam (in a machine tool) or by an indexible cam (in a transmission), and receive pressurized fluid which is admitted axially or radially, depending upon whether the spools are received in or surround the respective spindles or shafts.
Claims17
In a spindle arrangement for a machine tool, a combination comprising support means;
- at least one rotary work supporting spindle member mounted in said support means;
- a plurality of fluid-operated devices mounted on said rotary work supporting spindle member, said devices including at least one clutch device, at least one brake device, and at least one work clamping device;
- a source of pressurized fluid;
- and control means for connecting selected devices with said source and for permitting selected devices to discharge control fluid, said control means comprising a valve member, one of said members being hollow and surrounding the other of said members, said valve member being movable axially of said work supporting spindle member between a plurality of positions in each of which at least one of said devices is connected with the source while the other are free to discharge control fluid, and actuating means for moving said valve member between said positions.
Dependencies are inferred from the claim text.