Modeling and identification of the error in eccentric axis follow-up grinding machine

Apply the theory of multi-body system, this paper establishes the follow-up error analysis model of grinding machine, and focuses on the study of its error identification method to improve the accuracy of the eccentric shaft servo grinder, providing a theoretical basis for error compensation of CNC grinding machine. And by using nine-line identification method to identify the all 21 items of geometric errors grinding machine translation system three translational axis of, By using the nine line identification method of the translation system to identify the all 21 items of geometric errors about the three translational axis of the grinding machine. Based on the three indicators, axial runout, radial runout and totating error of the rotating shaft, to arrive at the basic geometric error in the direction of six degrees of freedom of the rotating shaft. Motion model of multibody system error is analyzed, and based on the traditional geometry description method of multibody system, putting forward more practical description method on engineering body motion. The ideal movement of engineering object and the motion model under the condition of error are reasonably integrated and analyzed. (paper)