摘要
针对汽车进气歧管上盖的注塑设计方案,为了选择合适工艺参数,首先建立汽车进气歧管上盖的三维模型,设计浇注系统,将模具表面温度、熔体温度、保压压力以及保压时间设置为设计变量,以塑件翘曲变形量、体积收缩率以及缩痕指数作为评价指标,结合Box-Behnken试验设计,构建响应面,采用熵权法确定各个评价指标所占的权重,结合Matlab算法进行优化。结果表明:采用熵权法计算权重,运用响应面法和遗传算法可以有效、快速地实现工艺参数的优化。
Aiming at the injection design scheme of the upper cover of automobile intake manifold,in order to select the appropriate process parameters,the three-dimensional model of the upper cover of automobile intake manifold was established,and the pouring system was designed.The surface temperature,melt temperature,holding pressure and holding time of the die were set as design variables,and the warpage deformation,volume shrinkage and shrinkage trace index of the plastic parts were taken as evaluation indexes,combined with Box-Behnken experiment design,build response surface,use entropy weight method to determine the weight of each evaluation index,and optimize with Matlab algorithm.The results show that the optimization of process parameters can be realized effectively and quickly by using the method of entropy weight and response surface methodology and genetic algorithm.
引文
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