摘要
为改善深沟球轴承塑料保持架的注塑变形问题,以锁口端部收缩值为优化评价指标,采用模流分析对保持架浇口数量、加强筋形状以及玻纤含量进行优化选择,通过Minitab软件设计响应曲面试验并结合分类回归树(CART)模型获得注塑工艺参数的最优预测组合。结果表明,优化后锁口端部收缩值由2.461 mm降至1.092 mm,下降55.63%,保持架注塑变形问题得到明显改善。再基于Helius联合仿真对保持架的熔接痕强度进行分析,将模流分析结果映射到ANSYS并通过结构求解器进行运算,证明了优化后的深沟球轴承塑料保持架无失效风险,熔接痕处强度满足要求。
In order to improve the injection molding deformation of plastic cages for deep groove ball bearings,the shrinkage value of counterbore end is taken as optimization evaluation index,and the mold flow analysis is used to optimize the number of cage gates,the shape of stiffeners and content of glass fibers.The response surface test is designed by Minitab software,and the optimal prediction combination of injection molding process parameters is obtained by combining classification and regression tree(CART)model.The results show that the shrinkage value of counterbore end decreases by 55.63%from 2.461 mm to 1.092 mm after optimization,and the injection molding deformation problem of the cages is significantly improved.Based on Helius co-simulation,the weld mark strength of the cages is analyzed.The results of mold flow analysis are mapped to ANSYS and calculated by structural solver,proving that the optimized cages have no risk of failure,and the weld mark strength meets the requirements.
作者
宁仲
李哲
董胤喆
黄明
孙小波
NING Zhong;LI Zhe;DONG Yinzhe;HUANG Ming;SUN Xiaobo(Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039,China;National Engineering Research Center for Advanced Polymer Processing Technology,Zhengzhou University,Zhengzhou 450002,China)
出处
《轴承》
北大核心
2024年第8期12-17,共6页
Bearing
关键词
滚动轴承
深沟球轴承
保持架
注塑
有限元分析
rolling bearing
deep groove ball bearing
cage
injection molding
finite element analysis
