Large displacement hydrostatic workpiece holder

Abstract From the Canadian patent

A hydrostatic tool holder having a displaceable metal sleeve formed with a plurality of circumferentially spaced and longitudinally extending slots and a flexible, polymeric ring defining at least in part a fluid chamber to separate the fluid in the, chamber from the sleeve to prevent the fluid from escaping through the slots in the sleeve. The slots in the metal sleeve enable a large displacement of the sleeve through the, polymeric ring so that the hydrostatic tool holder may be used with workpieces having, rough finishes, such as cast metal workpieces like cylinder liners for internal combustion, engines, which as cast have relatively rough surfaces and relatively low dimensional, …