齿轮泵无困油摆线齿廓的逆向设计与低脉动措施  

Reverse Design of Cycloid Tooth Profile Without Trapped Oil and Implementation Measures of Low Flow Ripple for Gear Pump

作　　者：夏云才 郝海滨[2] 毛银 Xia Yuncai;Hao Haibin;Mao Yin(School of Mechanical Engineering,Dalian Vocational&Technical College,Dalian 116035,China;School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China)

机构地区：[1]大连职业技术学院机械工程学院,辽宁大连116035 [2]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《机械传动》2022年第4期143-147,共5页Journal of Mechanical Transmission

基　　金：辽宁省教育厅科学研究项目(JYT201903);大连职业技术学院2019科研创新基金(DZ2019CXJJ08)。

摘　　要：为解决齿轮泵困油现象和流量脉动大的结构性问题,基于摆线齿轮的传动优势和圆摆线的成形原理,以最能体现齿轮泵性能的齿数和滚圆半径系数为构造参数,以齿顶圆心角、齿顶半径系数和齿顶压力角为功能参数,逆向构建出重合度为1的摆线齿廓,并通过双齿轮副构造和脉动系数最小化的两大措施,解决了原有单一齿轮副流量脉动大的结构性问题。结果表明,摆线齿廓逆向设计方法简单、结果精准,能被一般工程技术人员直接采用;单一齿轮副的重合度为1,可确保齿轮泵的无困油现象;双齿轮副轴向π/齿数的错位装配易于实现,轴向综合重合度为2,可确保摆线齿轮副的传动平稳性;最小齿数为6且不存在根切现象,双齿轮副较单一齿轮副具有75%左右的脉动改善率,基于脉动最小化的最佳摆线齿廓参数可直接应用于生产实践。为摆线齿轮泵无困油低脉动的进一步研究与开发提供了理论基础。In order to solve the two structural problems of trapped oil and large flow ripple in gear pump and based on transmission advantages of cycloid gear and its forming principle,tooth number and radius factor of rolling circle which can best reflect pump performance are taken as structural parameters of cycloidal tooth profile,central angle,radius factor and pressure angle of addendum arc functional parameters of gear pump,a cycloid tooth profile with a contact ratio of 1 is constructed in a reverse way and the structural problem of large flow ripple of original single gear pair is solved by the construction of double gear pairs and minimization of ripple coefficient.All results show that the reverse design method of cycloidal tooth profile is simple and accurate,and can be directly used by general engineers;the contact ratio of a single gear pair is 1 to ensure that gear pump has no trapped oil phenomenon;the axial dislocation assembly of double gear pairs with special angle ofπdivided by tooth number is easy to be realized,and axial comprehensive contact ratio is 2 to ensure transmission stability of cycloidal gear pair;minimum number of teeth is 6 and there is no root cutting phenomenon;compared with single gear pair,an about 75%ripple improvement rate is seen in double gear pair and the optimal tooth profile parameters based on the minimization of ripple factor can be directly applied to the production practice,etc.The aim is to provide a theoretical basis for further research and development of low flow ripple gear pump without trapped oil.

关 键 词：齿轮泵 摆线齿廓 无困油现象 低流量脉动 重合度 逆向设计 

分 类 号：TH137.51[机械工程—机械制造及自动化]