柱塞泵缸体-主轴花键齿面修形及抗磨损研究

打开文本图片集

关键词：轴向柱塞泵；有限元法；齿向修形；接触特性；微动磨损

中图分类号：TH322

DOI：10.3969/j.issn.1004-132X.2025.08.012 开放科学（资源服务）标识码（OSID）：

Abstract： During the operations of an axial piston pump， the changes in pressure inside the piston chamber might easily cause stress concentration when the contact of the spline pair between the cylinder and shaft of piston pumps，exacerbating the fretting wear of the tooth surfaces. In order to extend the service life of the splines，finite element method and Archard model werecombined to study the wear resistance design of the spline pair between the cylinder and shaft of piston pumps.Firstly，a finite element contact model of the spline pair between the cylinder and shaft of piston pumps was developed using the finite element method. Secondly，a new method for modifying involute spline pairs was proposed，and compared with traditional tooth profile modification methods，the contact characteristics of spline pairs before and after modification were analyzed. Finally，the Archard model was used to predict and compare the freting wear of the tooth surfaces before and after the modification of the spline pair. The results show that after appropriate modification of the spline tooth surfaces，the stress concentration phenomenon during contact is alleviated，and the maximum contact stress of the tooth surfaces is reduced.All four modification methods may reduce the fretting wear of the tooth surfaces at both ends of the spline，and the precise tooth surface modification method has a better modification effectiveness than the traditional tooth profile modification method. The results have certain guiding significance for the reliability and wear resistance design of piston pump spline operations.

Key words：axial piston pump； finite element method；tooth profile modification；contact characteristics；fretting wear

0 引言

柱塞泵作为液压动力系统的核心组件，在航空航天领域运用广泛，其高可靠性对航空航天设备的安全运行至关重要[1。（剩余12093字）