基于响应面法的汽车离合器盘毂温锻-冷精整工艺多目标优化

发布时间：2018-05-06 18:47

本文选题：离合器盘毂 + 温锻-冷精整　；参考：《中南大学学报(自然科学版)》2015年09期

【摘要】：将温锻-冷精整工艺引入汽车某型离合器盘毂的生产中,结合响应面法(RSM)与弹塑性有限元模拟(FEM)对盘毂冷精整工艺参数的多目标优化问题进行研究。以减小终挤压件轴向翘曲角、减小齿面径向回弹量和降低终挤压件最大损伤值为优化目标,并以精整凸模速度、精整凹模半锥角、温锻件与精整凹模间摩擦因数、精整量以及温锻件法兰厚度为优化变量,采用正交试验设计与Design-Expert V8软件进行RSM拟合建模分析,得到终挤压件的齿面径向回弹量与最大损伤值的二阶响应面模型和终挤压件轴向翘曲角的线性响应面模型,并通过FEM验证模型的准确性,其误差绝对值小于6.3%,可用于后续优化。生产实践表明多目标优化后的温锻-冷精整工艺能够生产出表面质量好、尺寸精确的优良盘毂零件。
[Abstract]:This paper introduces the warm forging and cold finishing process into the production of a clutch hub of a certain type of automobile, and studies the multi-objective optimization of the cold finishing process parameters of the hub with response surface method (RSM) and elastic-plastic finite element simulation (FEMM). The optimization goal is to reduce the axial warping angle of the final extrusion parts, to reduce the radial springback of the tooth surface and to reduce the maximum damage value of the final extruded parts, and to take the speed of the finishing punch, the semi-conical angle of the finishing die, the friction coefficient between the warm forging and the finishing die, and the friction coefficient between the warm forging and the finishing die as the optimization objectives. The finishing amount and the flange thickness of warm forging are the optimized variables. The orthogonal test design and Design-Expert V8 software are used to model and analyze the RSM fitting. The second order response surface model and the linear response surface model of the axial warping angle of the final extruded part are obtained. The accuracy of the model is verified by FEM. The absolute error of the model is less than 6.3, which can be used for further optimization. The production practice shows that the multi-objective optimized warm forging and cold finishing process can produce fine disc hub parts with good surface quality and precise size.
【作者单位】：重庆大学材料科学与工程学院;
【基金】：中央高校基本科研业务费专项资金资助项目(CDJZR13130082)~~
【分类号】：TG316;TG376

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