Research on the Influence of Bearing Preload of Tail Reducers on Contact Marks and Backlash of Bevel Gears

Li Tianliang; Deng Mingming; He Zhiliang; He Haiyu; Tang Jinyuan

doi:10.16578/j.issn.1004.2539.2024.06.003

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Research on the Influence of Bearing Preload of Tail Reducers on Contact Marks and Backlash of Bevel Gears

Theory·Research | 更新时间：2024-06-19

- Research on the Influence of Bearing Preload of Tail Reducers on Contact Marks and Backlash of Bevel Gears
- Journal of Mechanical Transmission Vol. 48, Issue 6, Pages: 14-21(2024)
- 作者机构：
  
  1.中国航发中传机械有限公司，湖南长沙 410200
  2.海装驻长沙地区军事代表室，湖南株洲 412000
  3.中南大学极端服役性能精准制造全国重点实验室，湖南长沙 410083
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2024.06.003
  CLC：
- Published：15 June 2024，
  
  Received：28 March 2023，
  
  Revised：25 June 2023，
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李添良,邓明明,何志良等.尾减速器轴承预紧对锥齿轮接触印痕和齿隙的影响规律研究[J].机械传动,2024,48(06):14-21.

Li Tianliang,Deng Mingming,He Zhiliang,et al.Research on the Influence of Bearing Preload of Tail Reducers on Contact Marks and Backlash of Bevel Gears[J].Journal of Mechanical Transmission,2024,48(06):14-21.
李添良,邓明明,何志良等.尾减速器轴承预紧对锥齿轮接触印痕和齿隙的影响规律研究[J].机械传动,2024,48(06):14-21. DOI： 10.16578/j.issn.1004.2539.2024.06.003.

Li Tianliang,Deng Mingming,He Zhiliang,et al.Research on the Influence of Bearing Preload of Tail Reducers on Contact Marks and Backlash of Bevel Gears[J].Journal of Mechanical Transmission,2024,48(06):14-21. DOI： 10.16578/j.issn.1004.2539.2024.06.003.

摘要

尾减速器是直升机传动系统的重要部件，轴承预紧是尾减速器装配的关键环节，直接影响直升机尾旋翼的平稳性、寿命及噪声。根据轴承支撑构型建立预紧螺栓的受力模型，得到螺栓的拧紧力矩及施加在支撑面上的轴向力；基于受力关系建立尾减速器轴承预紧有限元分析模型，根据分析结果提取了锥齿轮副的安装误差，处理得到：弧齿锥齿轮副的齿面间隙随着力矩的增大而减小，印痕位置随着力矩的增大有逐渐向大端移动的趋势；试验结果与有限元计算结果吻合性较强，方法可进一步推广到其他类型减速器中。

Abstract

The tail gear reducer is an important component of the helicopter transmission system

and bearing preloading is a key link in the assembly of the tail gear reducer

which directly affects the stability

service life

and noise of the helicopter tail rotor. According to the bearing support configuration

a force model of the preloaded bolt is established to obtain the tightening torque of the bolt and the axial force applied to the support surface; based on the stress relationship

a finite element analysis model for the preloading of the tail reducer bearing is established

and the installation error of the bevel gear pair is extracted according to the analysis results. The processing results show that the tooth surface clearance of the spiral bevel gear pair decreases with the increase of the torque

and the imprint position gradually moves towards the large end with the increase of the torque; the experimental results are in good agreement with the finite element calculation results

and the method can be further extended to other types of reducers.

关键词

减速器轴承预紧弧齿锥齿轮接触印痕齿隙

Keywords

ReducerBearing preloadSpiral bevel gearContact patchBacklash

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Related Institution

Department of Mechanical Systems, AECC Commercial Aircraft Engine Co., Ltd.

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Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University

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