Measuring instrument

The performance of linear axes is often tested on the basis of one set-up per one or two types of deviations from a NC path. With the applica-tion of multi-axes machining the contouring per-formance in more than two degrees of freedom is of interest. The paper describes a measuring instrument to check the contouring performance of a machine tool in the six degrees of freedom. The three translations and the three rotations of the relative movement between tool side and workpiece side are measured simultaneously. Results of first measurements are presented and discussed. Keywords: Machine tool, Contouring performance