Study On Rotating Error Separation Technique

Precision and super-precision manufacturing and measurement have higher precision requirement for rotating shaft.There are two pathes of promoting the shaft's rotating precision, that is , promoting the manufacturing and assembly precison of the parts and reducing the influence of rotating errors through error separation technique. Based on the multi-step error separation method, a multi-circle based error separation method is proposed, the mathmatical model of which is built, and the frequency and time characteristics are analyzed. The rotating error separation program is developed by using Visual Basic language, which is applicable not only for such roundness measuring instruments and cylindricity measuring instrument as precision measuring instruments withturntables, but also for high precision machine tools. The multi-functional measuring instrument of cylindrical diameters and form & position errors, developed by Zhongyuan University of Technology, Zhengzhou, China, is used as the testing instrument, in this thesis, and the factors of influencing the rotating error separation are analyzed. Based on the testing planning, a series of rotating error separation testing are done. The multi-circle rotating error separation technique is used in the evaluation of roundness errors, and the influence of the error separation technique on the evaluation results of roundness errors. The research results showed that the separation effect of rotating error is better when the number of the repeating measuring circles is selected as 14.