摘要
将聚碳酸酯(PC)四旋翼无人机上壳作为研究对象,利用Moldflow软件模拟分析四旋翼无人机上壳注塑流程,对比不同浇注方式对塑件加工工艺的影响,对无人机上壳注塑过程中的填充及翘曲进行分析。通过对比8点侧浇口注塑(方案Ⅰ)和中心单点浇口(方案Ⅱ)得出最佳注塑方案为Ⅰ,其中,方案Ⅰ充填时间为1.975 s,平均体积收缩率为4.898%,在边缘局部位置处的最大收缩率为6.729%,缩痕指数为3.91%。由翘曲分析结果可知,方案Ⅰ的X、Y、Z 3个方向的翘曲变形量中,与方案Ⅱ相比,Y、Z方向的翘曲变形量分别降低了51.7%、13.8%,但是,与方案Ⅱ相比,方案Ⅰ中的X方向的翘曲变形量较大,其值增大了0.3982 mm。虽然与方案Ⅱ相比,气穴分布中方案Ⅰ的成型质量较差,但是,由综合分析结果可知,方案Ⅰ为四旋翼无人机上壳注塑成型最佳方案。
The upper shell of polycarbonate(PC)four-rotor Unmanned Aerial Vehicle(UAV)was taken as the research object,and the injection molding process of quadrotor UAV upper shell was simulated and analyzed by the Moldflow software.In addition,the effects of different pouring methods on the processing technology of plastic parts was compared,and the filling and warpage of UAV upper shell during injection molding was analyzed.By comparing the 8-point side gate injection(schemeⅠ)and the center single-point gate(schemeⅡ),the best injection solution was scheme(Ⅰ),where the flling time of scheme(Ⅰ)was 1.975 s,the average volume shrinkage was 4.898%,the maximum shrinkage at the local position of the edge was 6.729%,and the shrinkage index was 3.91%.In addition,in the warpage analysis,the Y and Z directions of scheme(Ⅰ)were lower than those of scheme(Ⅱ)by 51.7%and 13.8%,respectively,but the warpage deformation in the X direction of the scheme(Ⅰ)was larger than that of scheme(Ⅰ)instead,increasing by 0.3982 mm.Even though the effect of scheme(Ⅰ)was slightly lower than that of scheme(Ⅰ)in cavitation distribution,after analyzing the results of multiple analyses,scheme(Ⅰ)was selected as the best solution for injection molding of the upper shell of the UAV.
作者
杨小勇
孟祥旭
曹新鑫
续富琴
何小芳
焦锐敏
YANG Xiaoyong;MENG Xiangxu;CAO Xinxin;XU Fuqin;HE Xiaofang;JIAO Ruimin(School of Material Science and Engineering,Henan Polytechnic University,Jiaozuo,Henan 454000,China)
出处
《塑料》
CAS
CSCD
北大核心
2023年第2期156-160,共5页
Plastics
基金
国家级大学生创新创业训练计划(202110460047)。
