摘要
针对汽车主模型检具铣削变形问题进行研究。利用有限元软件ABAQUS模拟铣削过程,建立单因素实验和四因素三水平正交试验,分析检具铣削时各工艺参数对两指标(工件加工变形和材料去除率)的影响规律。运用多量纲归一化方法和综合评分法对两指标进行归一化计算,采用极差分析法对计算结果进行分析,确定各工艺参数对两指标归一化后的贡献度,并获得AA5083薄壁零件铣削工艺参数的最佳组合,通过加工实验对优化后的工艺参数的正确性加以验证。实验结果表明:工件加工的平均偏差比优化前降低了18%,材料去除率比优化前提高了135%。证明该方法是一种较为有效的优化方法。
The problem of milling deformation of automobile main model inspection tools is studied.The finite element software ABAQUS was used to simulate the milling process.The single factor experiment and the four-factor three-level orthogonal test were established to analyze the influence of each process parameter on the two indexes(workpiece deformation and material removal rate).The multi-dimensional normalization method and the comprehensive scoring method were used to normalize the two indexes.The range analysis method was used to analyze the calculation results,and the contribution degree of each process parameter on the normalization of the two indexes was determined,furthermore,the optimal process parameters of AA5083 was obtained.The optimal combination of process parameters for thin-walled parts milling is verified by machining experiments on the correctness of the optimized process parameters.The experimental results show that the average deviation of workpiece processing is reduced by 18%compared with that before optimization,and the material removal rate is increased by 135%compared with that before optimization.It is proved that the proposed method is a more effective optimization method.
作者
张春燕
许丰
程德俊
陈慧
ZHANG Chun-yan;XU Feng;CHENG De-jun;CHEN Hui(School of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang Jiangsu 212003,China;Jiangsu Daqo Kfine Electric Co.,Ltd.,Zhenjiang Jiangsu 212000,China)
出处
《组合机床与自动化加工技术》
北大核心
2020年第6期154-158,共5页
Modular Machine Tool & Automatic Manufacturing Technique
关键词
薄壁件
有限元分析
工艺参数优化
thin-walled parts
finite element analysis
process parameter optimization
