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从几何学和运动学方面研究了环件轧制中形状变化规律，导出了环件内外轮廓曲线方程和内外轮廓椭圆度计算式，分析了环件轧制中椭圆度变化规律和影响因素。进行了环件轧制试验，试验结果与理论计算是一致的。
From the aspects of geometry and kinematics, the law of shape change in ring rolling was studied. The equations of inner and outer contour curves and the calculation formula of inner and outer contour were deduced. The law of variation of ellipticity in ring rolling and the influencing factors were analyzed. The ring rolling test was carried out, the test results are consistent with the theoretical calculation.