To shape contours at a workpiece, especially crankshafts and camshafts, the actual workpiece outline is measured before and during working to give corrections for dimensional deviations from the nominal outline

摘要

To shape contours at a workpiece, by cutting and especially by lathe milling, the actual workpiece contour (12) and/or outline is measured by a tactile register (21) between two measurement points (P1,P2) in a pre-processing measurement stage before work starts. During working, measurements are taken in-process at the workpiece (10) and/or the lathe tool (15). Corrections are applied to give the nominal contours (13) at the workpiece around the center (11), held in a nominal position (X,Y), based on the pre- and in-process measurements.