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| Geometrical Error Compensation in Propagated Spherical Surface Grinding System |
| XU Kaizhou，WEI Chenjuan，HU Dejin |
| (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract Kinematics theory of a multibody system was used to analyze translational joint error, rotational joint error and quadrature error in the spherical grinding system. This paper proposed a virtual grinding point method based on the feature of the process, and the feasibility as well as effectiveness of this method were also demonstrated. A volumetric error model of the grinding system was built up, and the corresponding value of the geometrical error was measured through a laser interferometer. Finally, a software compensation method was employed to validate the model. The experimental results show that the spherical surface grinding precision is significantly improved by geometrical error compensation.
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Received: 10 August 2009
Published: 29 April 2010
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