等距螺旋锥齿轮MIM工艺参数多目标优化  

Multi-objective optimization for MIM process parameters of equal-distance spiral bevel gear

作　　者：刘赣华[1] 唐乃夫 马瑞伍 LIU Ganhua;TANG Naifu;MA Ruiwu(School of Mechanical and Electrical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Shenzhen MIM Technology Co,Ltd,Shenzhen 518100,China)

机构地区：[1]江西理工大学机电工程学院,江西赣州341000 [2]深圳市密姆科技有限公司,广东深圳518100

出　　处：《中国塑料》2022年第3期96-103,共8页China Plastics

摘　　要：针对由于等距螺旋锥齿轮结构较复杂导致在粉末注射成型阶段常出现不均匀分布的体积收缩和粉末浓度,使得制件产生翘曲变形和表面黑线的问题,利用Moldex3D软件对金属粉末注射成型(MIM)工艺成形等距螺旋锥齿轮进行仿真分析,结合正交试验设计获得各工艺参数组合对应的体积收缩率和粉末浓度,通过均值分析和极差分析得出各工艺参数对响应目标的影响趋势,并利用BP神经网络结合非支配排序遗传算法(NSGA-Ⅱ)进行MIM工艺参数多目标优化。结果表明,优化之后的最佳工艺参数极大改善了体积收缩分布和粉末浓度分布的均匀性,提高了MIM等距螺旋锥齿轮的质量。Owing to a complex structure,the equal-distance spiral bevel gear often shows an uneven distribution in volume shrinkage and powder concentration during the powder injection molding stage.This causes the gear to produce warpage deformation and surface black lines.To solve this problem,the MIM process forming equal-distance spiral bevel gear was simulated using the Moldex3D software.Through combining with an orthogonal experimental design,the volume shrinkage rate and powder concentration corresponding to each process parameter combination were obtained.The influence of each process parameter on the response target was obtained from the analysis of the mean value and range.The BP neural network combined with the non-dominant sequencing genetic algorithm(NSGA-Ⅱ)was used to perform the multi-objective optimization of the MIM process parameters.The results indicated that the optimal process parameters after optimization greatly improved the uniformity of volume shrinkage distribution and powder concentration distribution,thus improving the quality of the MIM equal-distance spiral bevel gear.

关 键 词：金属粉末注射成型 等距螺旋锥齿轮 粉末浓度 体积收缩 多目标优化 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]