锻压技术

等壁厚金属定子内螺旋曲面内外高压充模胀形仿真研究

英文标题：Simulation research on internal and external high pressure fillingdie bulging inner spiral curved surface of metal stator with equal wall thickness

作者：王树强乔金梦刘希敏倪洪启

单位：沈阳化工大学

关键词：等壁厚内螺旋曲面高压胀形有限元分析充模

分类号：TG394

出版年,卷(期):页码：2018,43(6):67-70

摘要：

针对等壁厚螺旋定子金属管高压胀形，提出了内外分步高压胀形的工艺方法，该方法毛坯管的直径介于管件螺旋曲面的大径和小径之间，用外高压胀形成形管件凹槽部分，用内高压胀形成形管件凸起部分，减少胀形极限高度对工件厚度和几何尺寸的限制。建立了内外模具螺旋曲面的三维实体模型和有限元模型，应用有限元软件进行胀形过程仿真，揭示了金属管材在受均匀高压并与规律螺旋面接触下的受迫流动规律。设计和实施了胀形实验，验证了内外分步充模胀形的工艺方法，该方法可以大幅减少胀形系统压力，大幅提高了定子螺旋曲面的制造效率。

For the high pressure bulging of spiral stator metal pipe with equal wall thickness, a process method of inside and outside high pressure bulging step by step was proposed, and the diameter of blank tube was between the major diameter and minor diameter of the spiral curved surface of tube. Then, the concave part and convex part of the tube were bulged by external and internal high pressure respectively, and the limit of bulging limit height on the thickness and geometric sizes of workpiece was reduced. Furthermore, the three-dimensional solid model and finite element model of spiral curved surface of internal and external die were established, and the bulging process was simulated by finite element software to reveal the forced flow rule of the metal tube contacting with regular spiral surface under uniform high pressure. Finally, the bulging experiment was designed and implemented, and the process method for internal and external die filling bulging step by step was verified. Thus, this method can greatly reduce the bulging pressure and increase the manufacturing efficiency of the spiral curved surface of stator.

基金项目：

辽宁省自然科学基金资助项目（20170540722）；辽宁省“十三五”教育科学规划课题（JG17DB403）

王树强（1978-），男，博士，讲师；Email：wsqwsq_2004@126.com

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