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AssigneeUnova U.K. Limited
InventorsMark Andrew Stocker, Dermot Robert Falkner, Paul Martin Howard Morantz, Michael George Pierse
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A grinding or polishing machine comprises a rigid platform on which a workhead spindle and a grinding wheel spindle are located. The grinding wheel spindle is mounted on a sub-assembly which is attached to the platform by means of flexures which permit limited movement of the sub-assembly in a direction generally parallel to the direction in which the wheel has to advance to achieve grinding or polishing of a workpiece mounted on the workhead spindle. The flexures generally inhibit movement of the sub-assembly in all other directions. Two grinding wheels are mounted on the platform, one on each of two sub-assemblies, and each sub-assembly is attached to the platform by flexures as aforesaid. The flexure mounting points are located generally centrally of the machine and are located on either side of and close to the machine centre line. In a grinding or polishing machine having workpiece spindle means, tool spindle means mounted on sub-assemblies which permit limited relative movement in one direction to effect tool and workpiece engagement cam drive means is provided whereby each sub-assembly is movable to advance or retract each tool spindle towards and away from the workhead spindle.
A grinding or polishing machine comprising a rigid platform on which a workhead spindle and a grinding wheel spindle are located, and wherein the grinding wheel spindle is mounted on a sub-assembly which is attached to the platform by means of strip hinges which permit limited movement of the sub-assembly in a direction generally parallel to the direction in which the wheel has to advance to achieve grinding or polishing of a workpiece mounted on the workhead spindle, the strip-hinges generally inhibiting movement of the sub-assembly in all other directions.
A grinding or polishing machine comprising a rigid platform, a workpiece spindle means located on the platform, tool spindle means mounting on a sub-assembly which is attached to the platform by means of flexures, which permit limited relative movement in a direction to effect tool and workpiece engagement, and cam drive means mounted on the platform for engagement with the sub-assembly, whereby the sub-assembly is moveable to advance and retract each tool spindle means towards and away from the workhead spindle means.
A method of grinding the edge of a disc workpiece using a machine in which a grinding wheel and a forming wheel are carried on a stiff mounting, comprising the steps of moving the grinding wheel and forming wheel into engagement so as to form a groove around the edge of the grinding wheel corresponding in cross-section to the complement of the shape to be formed around the disc edge during grinding, engaging the grinding wheel with the disc which is also stiffly mounted relative to the grinding wheel, grinding the edge thereof into the desired shape, and after at least one of the disc edges has been ground, re-engaging the grinding wheel and the forming wheel to re-form the groove the grinding wheel to correct for wear, wherein the forming wheel is also fixedly mounted on the spindle of the disc workpiece for rotation therewith.
Apparatus for edge grinding or polishing a disc workpiece comprising a grinding wheel and drive means therefor, a forming wheel, support means for the grinding wheel and forming wheel which is stiff to restrict unwanted relative movement therebetween, means for effecting relative movement to cause the grinding wheel to align with the forming wheel, means for effecting relative movement between grinding and forming wheels to plunge grind the edge of the grinding wheel to form a groove therein of precise cross-section, a workpiece spindle on which the disc workpiece can be mounted, said spindle also being carried by the stiff support means, drive means for moving the grinding wheel towards and away from the workpiece spindle, to bring the wheel into engagement with the circular edge of the disc workpiece when mounted on the spindle to edge grind the disc workpiece, and drive means for rotating the spindle, wherein the forming wheel is also mounted on the workpiece spindle for rotation therewith.
Dependencies are inferred from the claim text.