Patent ID: 9714881
Date: 2017-07-25
CPC Classifications: G01B,G01M

Claim:
1. A method of determining a machining axis of a rotary work blank, wherein the rotary work blank includes workpiece areas to be machined by stock removal and areas to be left unmachined, said method comprising the steps of: receiving a reference workpiece in holding fixtures of a measurement device configured to measure the spatial position of workpiece surface points; measuring, using the measurement device, the position of a plurality of points of surface areas of the reference workpiece to be left unmachined relative to an imbalance reference axis determined in the measurement device; storing, in a data memory of a computer, the measured position data of the plurality of points of surface areas of the reference workpiece to be left unmachined as a reference partial surface; removing the reference workpiece from the measurement device; receiving a work blank in the holding fixtures of the measurement device; measuring, using the measurement device, the position of a plurality of points of surface areas of the work blank to be left unmachined; storing, in the data memory of the computer, the measured position data of the plurality of points of surface areas of the work blank to be left unmachined as a blank partial surface; computing, from the stored position data, an imbalance effect relative to the imbalance reference axis resulting from the deviation between the blank partial surface and the reference partial surface; expressing the imbalance effect by the position of the main inertia axis of a workpiece having a nominal mass distribution; and computing the machining axis by adding an offset to the position of the main inertia axis.