基于正交试验的高铁轴承内圈冷辗扩壁厚均匀性优化分析

为提高高铁轴承内圈冷辗扩成形壁厚均匀性, 应用ABAQUS软件建立高铁轴承内圈非对称冷辗扩有限元模型, 并进行了相关模拟. 基于正交试验方法, 以冷辗扩成形后轴承内圈的壁厚均匀性为试验指标, 获得了芯辊初始进给速度(A)、锥辊转速(B)和驱动辊转速(C)对壁厚均匀性的影响规律, 并利用极差分析法和方差分析法对轴承内圈冷辗扩工艺参数进行优化. 研究结果表明, 工艺参数对内圈壁厚均匀性影响的主次顺序为 , 并得到了最佳工艺参数组合.

Optimization analysis of wall thickness uniformity of inner ring of high speed rail bearing on cold rolling based on orthogonal test

In order to improve the wall thickness uniformity of inner ring of high speed rail bearing on cold rolling, the finite element model of inner ring of high speed rail bearing under asymmetric cold ring rolling process is established through ABAQUS software. Taking the wall thickness uniformity of finished rings as test index, the influence law of the initial feed rate of mandrel (A), cone roller speed (B) and drive roller speed (C) on the wall thickness uniformity is obtained using the orthogonal test method. The parameters of inner ring during cold rolling process are optimized by means of range analysis and variance analysis. The analytical results show that the order of influence of process parameters on the wall thickness uniformity of inner ring is C >A×C >B×C >A >B > A×B, and the optimum combination of process parameters is obtained.