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钛合金TC17超声振动钻削参数的优化研究

发表时间:2019-10-31  浏览量:167  下载量:17
全部作者: 刘士荃,李元祥,邸红采,李青雨,吴凤和
作者单位: 燕山大学机械工程学院;燕山大学河北省重型智能制造装备技术创新中心
摘 要: 钛合金TC17以其优异的材料性能在许多领域发挥着重要作用,但在钻削加工过程中,单位面积上钻削力大、钻削温度高且加工后表面质量难以保证掣肘了其使用。本文以钛合金TC17为研究对象,搭建了超声振动钻削试验平台,并设计了四因素五水平正交钻削试验;确定了钻削用量及刀具参数中对轴向力、温度和表面粗糙度的显著性因素,通过回归分析分别建立了相应的经验模型,并对模型进行了实验验证;为获取最优钻削效果,采用熵值法确定了优化目标中轴向力、温度和表面粗糙度的权重因子,进而基于评价函数法将多目标优化求解问题转换为单目标优化求解问题,并利用遗传算法对模型求解获取了最优参数解,该参数对钛合金TC17的加工具有一定的指导意义。
关 键 词: 机械制造工艺与设备;钛合金TC17;超声振动钻削;多目标优化;正交试验
Title: Optimization study on ultrasonic vibration drilling parameters of titanium alloy TC17
Author: LIU Shiquan, LI Yuanxiang, DI Hongcai, LI Qingyu, WU Fenghe
Organization: School of Mechanical Engineering, Yanshan University; Heavy-duty Intelligent Manufacturing Equipment Innovation Center of Hebei Province
Abstract: Titanium alloy TC17 plays an important role in many fields due to its excellent material properties. However, due to the problem of the large drilling force per unit area, the high drilling temperature and the poor surface quality after processing, its use is restricted in the drilling process. In this paper, the titanium alloy TC17 was used as the research object, the ultrasonic vibration drilling test platform was built, and the four-factor with five-level orthogonal drilling experiment was designed. The significant factors of axial force, temperature and surface roughness in drilling amount and tool parameters were determined. The corresponding empirical models were established by regression analysis, and the models were verified by experiments. In order to obtain the optimal drilling effect, the weighting factors of the optimization targets which included axial force, temperature and surface roughness were determined by entropy method. Thus, the multi-objective optimization problem was transformed into the single-objective optimization problem based on the evaluation function method. Finally, the optimal parameter solution of the model was obtained by genetic algorithm, which had certain guiding significance for the processing of titanium alloy TC17.
Key words: technology and equipment of machinery manufacture; titanium alloy TC17; ultrasonic vibration drilling; multi-objective optimization; orthogonal experiment
发表期数: 2019年10月第5期
引用格式: 刘士荃,李元祥,邸红采,等. 钛合金TC17超声振动钻削参数的优化研究[J]. 中国科技论文在线精品论文,2019,12(5):711-719.
 
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