Abstract
Multi-axis machines allow manufacturing of complex geometries in a single machine set up. Because of the machines' complexity, calibration processes are usually difficult and involved. Rotary tables are widely used as key components in multi-axis machines to provide two rotational degrees of freedom. This paper presents a comprehensive scheme for rotary table calibration: measurement principle, system design and prototype building, measurement evaluation of the prototype. The factors influencing the measurement accuracy were analysed.
