Rolling milling tool
AssigneeWilhelm Hegenscheidt GmbH
InventorAlfred Ostertag
Life of this patent
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Abstract
A rolling milling tool is constructed so that the roller, in the form of a sphere, or cylinder or cone, is supported in a hydrostatic bearing to avoid counter rollers, thereby reducing the size of such tools. The roller is held in a bearing socket or guide chamber which may provide for an axial play of the roller in the chamber. The bearing socket or guide chamber is formed in a roller head which may be itself constructed for being chucked in a tool holder, or the roller head may be received in a housing which is held in a tool holder of a machine tool, such as a lathe. Ducts connect the hydrostatic bearing to a source of fluid pressure. The tool is suitable for a smooth rolling and/or work hardening roller operation.
Claims27
A burnishing and deep rolling tool, comprising roller means for performing a rolling operation, roller head means including a hydrostatic bearing socket for rotatably supporting, guiding and holding said roller means, said hydrostatic bearing socket forming a hydrostatic bearing for said roller means, fluid duct means leading into said hydrostatic bearing for connecting said hydrostatic bearing to a source of pressurized fluid, and wherein said hydrostatic bearing socket comprises a chamber for each of said roller means, said chamber having a chamber diameter widening section, a chamber diameter reducing section forming a rim (19) for retaining said roller means, said rim extending around an axially outer end of said hydrostatic bearing socket, and pressure relief means (12, 66) leading into said chamber diameter widening section in said hydrostatic bearing socket for an effective pressure relief on said roller means when said roller means clears a contact with said hydrostatic bearing socket.
Dependencies are inferred from the claim text.