齿面点蚀对航空螺旋锥齿轮副啮合特性影响分析  

Analysis of Influence of Tooth Surface Pitting on Meshing Performance of Aeronautical Spiral Bevel Gears Drive

作　　者：王笑乐 卢剑伟 蔡云庆 王红州 Wang Xiaole;Lu Jianwei;Cai Yunqing;Wang Hongzhou(Anhui Agricultural University,Hefei 230036,China;Hefei University of Technology,Hefei 230009,China)

机构地区：[1]安徽农业大学,安徽合肥230036 [2]合肥工业大学,安徽合肥230009

出　　处：《航空科学技术》2022年第8期103-110,共8页Aeronautical Science & Technology

基　　金：国家自然科学基金(51875150);航空科学基金(2018ZEP4006)。

摘　　要：螺旋锥齿轮作为航空减速器的重要传动零件,具有耐久性、高强度、高效率、高平稳性的特点。而齿面点蚀作为螺旋锥齿轮的主要失效形式之一,明确其对齿轮副啮合特性的影响,对分析系统故障状态下的运动特性和提高航空传动系统的可靠性具有重要意义。本文以刀倾半展成法加工的螺旋锥齿轮副为对象,基于承载接触分析技术(LTCA),研究了不同工况下齿面不同位置点蚀对齿轮副时变啮合特性的影响规律。结果表明,与健康齿轮相比,点蚀位置接触应力有所下降,点蚀区附近齿面接触应力显著增大。齿面啮合至点蚀位置时,齿轮副传动误差增大。点蚀越靠近啮合区边缘,对传动误差的影响越小。点蚀位于啮合中心区域时,载荷越大,点蚀对传动误差的影响越小,但影响范围越广。相关结论为螺旋锥齿轮副点蚀故障状态下传动特性分析以及航空器可靠性研究提供了支持。As an important transmission part of aviation reducer,spiral bevel gear,has the characteristics of durability,high strength,high efficiency and high stability.As one of the main failure modes of spiral bevel gear,the influence of tooth pitting on the meshing characteristics of gear pair is very important for analyzing the motion characteristics of the system and improving the reliability of the aviation transmission system.In this paper,the spiral bevel gear pair processed by the generated and tilt method is used as the object.The loaded tooth contact analysis technology is employed to research the influence law of the pitting on different position on the time-varying meshing characteristics of the gear drive under different loads.The results show that,compared with healthy gears,the contact stress at the pitting location has decreased,and that on the tooth surface near the pitting area has increased significantly.When the tooth surfaces mesh to the pitting position,the transmission error of the gear pair increases.The closer the pitting is to the edge of the meshing zone,the smaller the influence on the transmission error.When the pitting corrosion is located in the center of the meshing area,the greater the load,the smaller the influence of the pitting corrosion on the transmission error,but the wider the influence range.The relevant conclusions provide support for the analysis of transmission characteristics and aircraft reliability of spiral bevel gear pair under pitting failure condition.

关 键 词：点蚀 螺旋锥齿轮副 承载接触分析 啮合特性 影响规律 

分 类 号：TH132[机械工程—机械制造及自动化]