基于正交试验的气缸罩盖精分离器形位公差控制  

Geometrical Tolerance Control of Cylinder Cover Fine Separator Based on Orthogonal Test

作　　者：曹纪清[1] CAO Ji-qing(Suzhou Industrial Park Institute of Service Outsourcing,Suzhou 215123,China)

机构地区：[1]苏州工业园区服务外包职业学院,江苏苏州215123

出　　处：《塑料科技》2021年第10期84-89,共6页Plastics Science and Technology

摘　　要：基于Moldflow分析对某玻纤增强PA10T材料的气缸罩盖精分离器的注塑成型过程进行模拟,考虑产品局部平面度和轴倾斜角,设计正交试验探究工艺参数的优化方案。通过Moldflow高级浇口定位器,确定最佳的浇口位置。结果表明:基于初始工艺参数,所有效应下的最大翘曲变形量为0.263 mm,对应局部平面度为0.164 6 mm,局部最大轴倾斜角为1.218°,不满足设计指标要求。通过正交试验分析工艺参数对平面度影响程度为:保压压力>v/p切换时的体积>熔体温度>注射时间>模具温度;对轴倾斜角的影响程度为:保压压力>注射时间>模具温度>熔体温度>v/p切换时的体积。综合分析得到最优的工艺参数组合为A_(4)B_(3)C_(1)D_(2)E_(3),相比初始工艺结果,所有效应的最大翘曲变形降低51.6%,局部平面度降低47.0%,局部轴倾斜角降低35.7%,实际试模状态验证其可行性。Based on Moldflow analysis, the injection molding process of fine separator for cylinder cover of a glass fiber reinforced PA10 T material was simulated. Considering the local flatness and axis inclination angle of the product, the orthogonal test was designed to explore the optimization scheme of process parameters. The optimum gate position was determined by Moldflow advanced gate locator. The results show that based on the initial process parameters, the maximum warpage deformation under all effects is 0.263 mm, the corresponding local flatness is 0.164 6 mm, and the local maximum axis inclinationt angle is 1.218°, which does not meet the design index requirements. The influence degree of process parameters on flatness is analyzed by orthogonal test as follows: holding pressure>volume at v/p switching>melt temperature>injection time>mold temperature;the influence degree on the axis inclination angle is: holding pressure>injection time>mold temperature>melt temperature>volume at v/p switching. The optimal combination of process parameters obtained by comprehensive analysis is A_(4)B_(3)C_(1)D_(2)E_(3). Compared with the initial process results, the maximum warpage deformation of all effects is reduced by 51.6%, the local flatness is reduced by 47.0%, and the local axial inclination angle is reduced by 35.7%. The feasibility is verified by the actual mold trial state.

关 键 词：气缸罩盖精分离器 玻纤增强PA10T 正交试验 参数优化 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业] TP391.7[自动化与计算机技术—计算机应用技术]