System for grinding rings with mechanical holding
AssigneeErnst Thielenhaus KG
InventorErnst Thielenhaus
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Abstract
A method of grinding an annular workpiece having an inner peripheral surface and an outer peripheral surface at least one of which is centered on a workpiece axis comprises the steps of holding the workpiece in a chuck rotatable about the axis and rotating the chuck and workpiece about the axis. A grinding tool is pressed radially against the one surface to remove material from the one surface and a cutting liquid is fed to the one surface to form thereon a liquid layer. A plurality of measuring shoes supported at angularly equispaced locations about the axis are urged radially toward the one surface. A jet of liquid is projected from each of the shoes against the one surface that forms a layer supporting the shoes on the one surface and merges with the layer of cutting liquid.
Claims10
A method of grinding an annular workpiece having an inner peripheral surface and an outer peripheral surface at least one of which is centered on a workpiece axis, the method comprising the steps of:
- holding the workpiece in a chuck rotatable about the axis;
- rotating the chuck and workpiece about the axis;
- engaging a grinding tool radially against one of the peripheral surfaces and thereby removing material from the one surface;
- feeding a cutting liquid to the one surface to form thereon a liquid layer;
- supporting a plurality of measuring shoes at angularly equispaced locations about the axis and urging the shoes radially toward the one surface;
- and
- projecting form each of the shoes against the one surface a jet of liquid that forms a layer supporting the shoes on the one surface and merges with the layer of cutting liquid.
An apparatus for grinding an annular workpiece having an inner peripheral surface and an outer peripheral surface at least one of which is centered on a workpiece axis, the apparatus comprising:
- a chuck rotatable about an axis;
- drive means for rotating the chuck and workpiece about the axis;
- a grinding tool engageable radially against one of the peripheral surfaces whereby the tool can remove material form the one surface;
- means for feeding to the one surface a cutting liquid forming a layer on the one surface;
- a plurality of measuring shoes;
- means for supporting the shoes at angularly equispaced locations about the axis and for urging the shoes radially toward the one surface, each of the shoes being formed with a nozzle open radially toward the one surface;
- and
- pump means connected to the nozzles for projecting from each of the nozzles against the one surface a jet of liquid such that the liquid forms a layer supporting the shoes on the one surface and merging with the cutting-liquid layer.
Dependencies are inferred from the claim text.