摘要
摆线齿廓内转子与外转子的圆弧齿廓啮合时,存在着啮合界限点。在界限点以内,内外转子齿廓相互啮合,而界限点以外的外转子则不参与啮合。若将啮合界限点以外的外转子上不啮合的齿廓曲线,改善成内转子摆线的二次包络曲线,可增加一道共轭密封。这对改善油泵的密封、增高排出压力和提高油泵容积效率都是有益的。根据一次包络摆线泵参数的优化理论和摆线泵内转子与外转子的相对运动关系,运用齿轮啮合原理,推导出外转子的二次包络齿廓方程;建立二次包络摆线泵的流道模型,应用Fluent的动网格理论和湍流理论对二次包络摆线泵内的压力场进行仿真分析。
When the inner rotor with cycloid tooth profile and outer rotor with arc tooth profile are in mesh,there are mesh boundary points. The tooth profile of inner rotor and outer rotor are in mesh within the boundary points,and they aren＇t in mesh out of the boundary points. If the tooth profile of the outer rotor which is out of the boundary points and not in mesh can be changed to double-enveloping curve just like the inner rotor cycloid tooth profile,an additional conjugate sealing can be gained. It is helpful to improve the sealing conditions meanwhile beneficial for increasing outlet pressure and volumetric efficiency of oil pumps. Based on the optimization theory of the parameters of first enveloped cycloid pumps and relative motion relationships between the inner and outer rotor of cycloid pumps,using the theory of gear meshing,the double-enveloping tooth profile equation was achieved. The channel model of the double-enveloping cycloid pump was built and the pressure field simulations of the pumps were made through dynamic mesh theory and turbulent theory of Fluent.
出处
《机床与液压》
北大核心
2010年第19期7-10,共4页
Machine Tool & Hydraulics
基金
浙江大学流体传动及控制国家重点实验室开放研究项目(GZKF-201005)
关键词
二次包络
摆线泵
动网格
仿真
Double-enveloping
Cycloid pump
Dynamic mesh
Simulation
