锻压技术

螺旋定子内曲面高压胀形方法研究

英文标题：Research on high-pressure bulging method of inner helicoids in the helical stator

作者：王树强刘希敏倪洪启李祥瑞

单位：沈阳化工大学

分类号：TG394

出版年,卷(期):页码：2016,41(5):53-56

摘要：

等壁厚橡胶层定子的出现大幅提高了螺杆马达和螺杆泵的整体性能，其定子金属壳内螺旋曲面具有多头、大导程、连续光滑的几何特征，该类零件的高效低成本制造是目前急需解决的关键问题。本文提出采用内高压充模胀形工艺方法实现其加工制造。采用计算机仿真、优化设计与胀形实验相结合的方法，研究了成形压力、管件壁厚、工件螺距和界面摩擦系数对成形的影响规律。胀形分析结果和实验结果一致性好，均达到了螺旋定子内曲面的加工要求，获得了壁厚均匀的内螺旋曲面。

The performances of the screw motor and screw pump were improved substantially due to the appearance of the stator with an equal thickness rubber bushing stator. The inner helicoid of stator metal shell with the geometric features of multi-head, big lead angle and continuous smoothness was unable to be manufactured with high efficiency and low cost, which is an urgent issue to be solved in this field at present. The internal high-pressure bulging technology was put forward to manufacture the stator metal shell. Then, by means of simulation, optimization design combining with bulging experiment, it was studied the influences of pressure, tube thickness, screw pitch of the workpiece and friction coefficient of the interface on the forming process. The analysis result of bulging by computer simulation was consistent with the experimental result, and met the production requirements of the stator. Thus, a uniform inner helicoid was obtained.

基金项目：

辽宁省教育厅一般项目（Z2013170）

王树强（1978-），男，博士，讲师刘希敏（1979-），女，硕士

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