Eugen Trapet, Vit Zeleny, Pavel Skalnik, Vaclav Bauma
DETERMINING ERRORS OF A ROTARY TABLE USING A SELFCENTERING HEAD (as one of EU MTCHECK project outputs)
To determine partial geometric errors of coordinate measuring machines (CMM), laser interferometers are used, but more and more also calibration-fit objects – artifacts. Most of all, objects with balls – ball-plate, ball-bar are used. The EU MTCHECK project intends, as one of its goals, to use these artifacts not only for calibration of coordinate measuring machines, but also for calibration of computer numeric control (CNC) machine tools. Partners in the project were the following companies, institutes and universities: UNIMETRIK, Spain (coordinator), CMI, Czech Republic, IBS, Netherlands, UNIZAR, Spain, MECANER, Spain and FIDIA, Italy. As more and more CMM and CNC machines are equipped by the so-called fourth axis, another partial output was determining errors of this rotary axis.