锻压技术

基于交互作用的超声滚挤压轴承套圈加工参数优化

英文标题：Optimization on machining parameters for ultrasonic rolling extrusion bearing rings based on interaction

作者：付浩然徐红玉王晓强田英健

分类号：TG376.1

出版年,卷(期):页码：2023,48(7):115-122

摘要：

以42CrMo钢为研究对象进行超声滚挤压正交试验，实现加工参数的优化控制。利用基于熵权理论建立的加工参数与表层性能之间的隶属函数评价关系，分析了加工参数对表层性能的显著性；根据交互作用最大隶属度原则，分析了加工参数间的交互作用，得出最优加工参数组合，并通过建立指数回归模型进行验证。结果表明：加工参数对表层性能的影响程度依次为：进给速度>静压力>振幅>转速；进给速度与静压力之间的交互作用的影响最大，进给速度与振幅、振幅与静压力次之，转速与进给速度、振幅、静压力的影响最小；最优加工参数为转速为550 r·min-1、进给速度为55 mm·min-1、振幅为5 μm、静压力为480 N，对比验证误差均控制在5%以下，实现了表层性能的全局最优。

For 42CrMo steel, the orthogonal experiments of ultrasonic rolling extrusion were conducted to achieve the optimal control of machining parameters, and the significance of machining parameters on surface performance was analyzed using affiliation function evaluation relationship between machining parameters and surface performance established by the entropy weight theory. Then, according to the principle of maximum affiliation degree of interaction, the interaction among machining parameters was analyzed to obtain the optimal combination of machining parameters, and the results were verified by establishing an exponential regression model. The results show that the degree of influence for machining parameters on surface performance is as follows: feed speed>static pressure>amplitude>rotational speed. The interaction between feed speed and static pressure has the greatest influence, followed by feed speed and amplitude, amplitude and static pressure, and the influence of rotational speed and feed speed, amplitude and static pressure is the smallest. The optimal machining parameters are the rotation speed of 550 r·min-1, the feed speed of 55 mm·min-1, the amplitude of 5 μm and the static pressure of 480 N, and the comparison verification errors are controlled below 5%, which realizes the global optimization of surface performance.

基金项目：

国家自然科学基金资助项目(U1804145); 国家重点研究计划（2018YFB2000405）

作者简介：付浩然(1995-)，男，硕士研究生 E-mail：1375525941@qq.com 通信作者：徐红玉（1972-），男，博士，教授 E-mail：xuhongyu@haust.edu.cn

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