1502 Precision Measurement of Vertical Straightness of a Roll Workpiece on an Ultra-Precision Lathe

Abstract

This paper presents a measurement method for vertical straightness of a roll workpiece on an ultra-precision lathe. The measurement of vertical straightness of a roll workpiece is directly influenced by the vertical error motions of carriage slide, which is composed of the out-of-straightness error component and the out-of-parallelism error component. The effect by the vertical error motions should be compensated in the measurement of vertical straightness of a roll workpiece. A three-probe method and new algorithms are employed to measure and evaluate both the vertical straightness and the vertical error motions, which are newly introduced. Experiments are carried out on a small roll workpiece.