锻压技术

蓄能器壳体热旋压收口模拟及工艺优化

英文标题：Simulation and process optimization of hot neckspinning for accumulator shell

作者：郑清春1 2 于洋滨1 2 朱培浩1 2

单位：1.天津理工大学天津市先进机电系统设计与智能控制重点实验室 2. 天津理工大学机电工程国家级实验教学示范中心

分类号：TG356.23

出版年,卷(期):页码：2018,43(12):73-78

摘要：

旋压温度、摩擦系数和主轴转速是影响蓄能器壳体热旋压成形的主要工艺参数。采用ABAQUS对蓄能器壳体过程进行加工模拟，通过中心复合实验法设计多组实验并进行数值模拟，分析各工艺参数对旋压收口结果的影响，并采用二阶响应面法，建立各工艺参数与优化变量之间的映射关系。将所得映射关系输入Design Gateway采用NSGA-Ⅱ算法进行多目标优化并获得Pareto最优解，以达到优化工艺参数、减少能量损耗、提高壳体质量的目的。实验表明：仿真模拟与实际加工瓶口直径误差为5.45%，最大厚度误差为3.99%，均在允许范围内；旋压温度降低30 ℃，达到了减少能量损耗的目的；主轴转速由原来的150 r·min-1提高至200 r·min-1，生产效率提高近20%。

Spinning temperature, friction coefficient and spindle speed are the main parameters that affect the hot spinning process of accumulator shell. Therefore, the neckspinning process of the accumulator shell was simulated by ABAQUS, and several simulation experiments were designed and simulated by the central composite method. Then, the simulation process was conducted to analyze the influences of process parameters on the neckspinning result, and the mapping relationship between process parameters and optimization variables was established by the secondorder response surface method. Furthermore, the mapping relationship was input into Design Gateway, and the multiobjective optimization was realized by NSGAII algorithm to obtain the Pareto optimal solution so as to achieve the purpose of optimizing process parameters, reducing energy loss and improving the shell quality. The experiments results show that the bottle diameter error between simulation and actual processing is 5.45%, and the maximum thickness error is 3.99%, which is within the allowable range. Thus, the spinning temperature is reduced by 30 ℃ achieveing the purpost of reducing energy loss, and the speed of spinning wheel is increased from the original 150 r·min-1 to 200 r·min-1 to increase the production efficiency by nearly 20%.

基金项目：

基金项目:天津市科技计划项目资助（17PTYPHZ00060）；天津市工业和信息化委员会专项资金资助（201803104）

作者简介：郑清春（1971-），男，博士，教授 Email：zhengqingchun@tjut.edu.cn 通讯作者：朱培浩（1983-），男，博士，副教授 Email:zhupeihao_gp@163.com

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