GEOMETRIC ERROR MEASUREMENT OF THE LINEAR AXIS OF CNC MACHINE TOOLS BY MULTILATERATION USING FOUR LASER TRACERS

摘要

Linear axes are key components of CNC machine tools and coordinate measuring machines, of which the accuracy plays a very important role on the machining and measuring performance. The geometric error is one of the most important factors that seriously deteriorates the system accuracy of a linear axis [1]. The measurement and identification of geometric errors are indispensable for the manufacturing of a precision linear axis.