Abstract
Coordinate Measuring Machine (CMM) is widely used as an accurate measuring instrument in manufacturing and design. Modern industry requires a CMM with higher accuracy and efficiency. The accuracy of CMM is influenced by many factors such as volumetric error and dynamic error. The volumetric error is the major component of CMM's errors in slowly probing while the dynamic error is not omitted during fast probing. Compensating the volumetric error is an effective approach to improve the precision of CMM. The volumetric error must be measured and the model in the working space of CMM must be set up while compensating. To measure the volumetric error, this paper proposes a new method for fast measuring 5 volumetric errors of a guide way at the same time. The error model is presented too. 3-beam laser interferometer method is used to measure the volumetric errors. The method can also be used in measuring the error in real-time dynamically. The research can be referred to design the super higher accuracy CMM and the precision CNC machine.
Published Version
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