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从建立４ 轴球体研磨机弹簧加压球体研磨的力学模型入手，运用高点切削作用机制和误差趋小化效应，解释了球体圆度误差趋小化机理。根据４ 研具对球面研磨的包络原理，提出了未研磨包络区是产生残存圆度误差的主要因素，并以研磨实验为依据探讨了未研磨包络区、研磨压力、磨料粒度、毛坯精度、研具磨损不均匀对球体研磨圆度的影响，为进一步改善研磨工艺和提高球体研磨圆度提供了参考。
Starting with the establishment of the mechanical model of 4-axis ball mill spring-loaded ball grinding, the high-point cutting mechanism and the error-reducing effect are used to explain the mechanism of the roundness error of ball. According to the principle of 4 grinding aids, this paper puts forward the principle that the non-grinding envelope area is the main factor that causes the residual roundness error. Based on the grinding experiment, the characteristics of the non-grinding envelope area, grinding pressure, abrasive grain size, Accuracy, uneven wear of the grinding tool on the roundness of the impact of the ball, to further improve the grinding process and improve the ball roundness provides a reference.