Patent ID: 6195595
Filing Date: 2001-02-27
Classification: G05B

Abstract:
An apparatus for working a workpiece, which apparatus comprises drive means for rotating a carrier about an axis of rotation, a tool for working said workpiece, means for moving said tool in one or more directions with respect to said drive means, and a control unit comprising a memory for a control program, wherein said control unit is arranged for controlling said moving means in accordance with the control program, in such a manner that said tool will follow a desired path for working the workpiece, wherein the control unit is arranged for measuring at least the angle between the axis of rotation and one of the moving means of the apparatus as an apparatus parameter, wherein the control unit is arranged for comparing the stored apparatus parameter with the measured apparatus parameter, and wherein the control unit, if a difference is detected between the stored apparatus parameter and the measured apparatus parameter, adapts the control program in such a manner that the tool will follow the desired path.