Spatial Accuracy Measurement Using XM-60 Calibrator

This case study outlines the efforts of Volumetric Accuracy Research Institute Co., Ltd. (VARI) to improve spatial accuracy measurement in machine tools using the XM-60 multi-axis calibrator. Traditionally, machine tool accuracy has been evaluated through linear positioning and straightness accuracy, as defined by standards such as ISO 230-1 and JIS B 6190-1. However, VARI has developed a new approach that focuses on three-dimensional position deviation, addressing the complexities of motion errors that interact with each other. The XM-60 allows for the measurement of all six degrees of freedom in a single setup, significantly reducing the time required for volumetric precision error measurement. This innovation is particularly beneficial for large machines, where traditional methods can be time-consuming. The study emphasizes the importance of accurately measuring machine axis errors to evaluate machining capability and improve overall manufacturing efficiency.