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工程设计学报  2023, Vol. 30 Issue (1): 48-56    DOI: 10.3785/j.issn.1006-754X.2023.00.001
优化设计     
支承刚度及齿面涂层对斜齿轮副啮合特性的影响研究
贾纪鹏1(),臧立彬1,陈勇1(),林霄喆2,陈杰3,武一民1
1.河北工业大学 天津市新能源汽车动力传动与安全技术重点实验室,天津 300130
2.吉利汽车动力总成研究院,浙江 宁波 315336
3.浙江吉利动力总成有限公司,浙江 宁波 315800
Study on the influence of support stiffness and tooth surface coating on the meshing characteristics of helical gear pair
Ji-peng JIA1(),Li-bin ZANG1,Yong CHEN1(),Xiao-zhe LIN2,Jie CHEN3,Yi-min WU1
1.Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles, Hebei University of Technology, Tianjin 300130, China
2.Geely Powertrain Research Institute, Ningbo 315336, China
3.Zhejiang Geely Powertrain Co. Ltd. , Ningbo 315800, China
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摘要:

支承刚度对自动变速器齿轮副的啮合质量有着重要影响,研究支承刚度及齿面涂层对斜齿轮副啮合特性的影响具有重要意义。以某七挡双离合自动变速器的一挡斜齿轮副为研究对象,建立了2种不同支承刚度的齿轴系统刚柔耦合模型,分析了不同工况下支承刚度对斜齿轮副啮合特性的影响规律;通过FCL?250H齿轮精测试验台得到有/无磷酸锰转化涂层齿轮的齿形齿向参数,并将其代入有限元模型进行仿真分析;进行齿轮接触疲劳点蚀实验,对比齿面涂层处理前后齿轮的接触疲劳寿命,并从齿轮表面形貌、动力性能及跑合性能等角度进一步揭示了涂层的强化机理。研究结果表明:齿轴跨度增大,支承刚度减小,则齿轮单位长度所受最大载荷和啮合错位量对输入扭矩的变化更为敏感;有涂层齿轮跑合后更有利于啮合,其疲劳寿命得到提高。研究结果为汽车自动变速器齿轮传动系统的结构优化和齿轮疲劳寿命的提高提供了参考。

关键词: 支承刚度自动变速器斜齿轮磷酸锰涂层啮合错位跑合特性    
Abstract:

Support stiffness has an important influence on the meshing quality of the gear pair of automatic transmission. It is of great significance to study the influence of the support stiffness and the tooth surface coating on the meshing characteristics of the helical gear pair. Taking the first helical gear pair of a seven-shift double-clutch automatic transmission as the research object, two rigid-flexible coupling models of the gear shaft system with different support stiffness were established, and the influence of the support stiffness on the meshing characteristics of the helical gear pair under different working conditions was analyzed; the tooth profile and tooth direction parameters of the gear with/without manganese phosphate conversion coating were obtained through the FCL-250H gear precision test bench, and were substituted into the finite element model for simulation analysis; the gear contact fatigue pitting test was carried out to compare the contact fatigue life of the gear before and after the coating treatment, and the strengthening mechanism of the coating was further revealed from the aspects of the gear surface morphology, dynamic performance and running-in performance. The results showed that the support stiffness decreased with the increase of gear shaft span, and the maximum load per unit length of gear and the amount of meshing dislocation were more sensitive to input torque changes; after running-in, the gear with coating was more conducive to meshing, and its fatigue life was improved. The research results provide a reference for the structural optimization of the gear transmission system of automotive automatic transmission and the improvement of the gear fatigue life.

Key words: support stiffness    helical gear of automatic transmission    manganese phosphate coating    meshing dislocation    running-in characteristic
收稿日期: 2021-12-17 出版日期: 2023-03-06
CLC:  U 463.2  
基金资助: 国家重点研发计划资助项目(2018YFE0207000)
通讯作者: 陈勇     E-mail: jjp3690@163.com;chenyong1585811@163.com
作者简介: 贾纪鹏(1997—),男,山东菏泽人,硕士生,从事自动变速器高强度齿轮动力学研究,E-mail: jjp3690@163.com, https://orcid.org/0000-0002-3490-2702
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引用本文:

贾纪鹏,臧立彬,陈勇,林霄喆,陈杰,武一民. 支承刚度及齿面涂层对斜齿轮副啮合特性的影响研究[J]. 工程设计学报, 2023, 30(1): 48-56.

Ji-peng JIA,Li-bin ZANG,Yong CHEN,Xiao-zhe LIN,Jie CHEN,Yi-min WU. Study on the influence of support stiffness and tooth surface coating on the meshing characteristics of helical gear pair[J]. Chinese Journal of Engineering Design, 2023, 30(1): 48-56.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2023.00.001        https://www.zjujournals.com/gcsjxb/CN/Y2023/V30/I1/48

图1  齿轮轴变形导致的齿轮啮合错位示意
图2  齿轮啮合线坐标示意
图3  齿轮传动系统和一挡齿轮箱模型
参数主动齿轮从动齿轮
齿数1760
齿宽/mm19.816.9
变位系数0.372 1-0.099 4
模数/mm2.1
压力角/(°)17.5
螺旋角/(°)29
中心距/mm93
密度/(kg·m-3)7 840
弹性模量/GPa210
泊松比0.3
表1  齿轮副参数
图4  不同支承刚度的齿轮刚柔耦合模型
图5  从动齿轮齿面载荷分布云图
图6  不同输入扭矩下从动齿轮齿面载荷变化
齿轮类别理论值/μm仿真值/μm误差/%
大支承跨度21.7822.412.79
小支承跨度2.822.912.95
表2  齿轮啮合错位理论值与仿真值的对比
输入扭矩/(N·m)啮合错位量绝对值/μm
大支承跨度小支承跨度
14013.772.19
17016.682.46
20019.562.70
23022.412.91
26025.243.09
29028.043.25
表3  不同输入扭矩下齿轮啮合错位量
图7  不同输入转速下啮合错位量对比
图8  齿轮实物图
图9  齿轮接触疲劳点蚀实验平台
图10  齿轮箱
图11  齿轮齿向精度检测结果
图12  齿轮疲劳耐久循环次数
图13  齿轮齿面疲劳点蚀状态
图14  箱体与齿轮的接触印痕
图15  不同输入扭矩下齿轮副传动误差
图16  有/无涂层齿轮齿面载荷分布云图
图17  跑合后齿轮齿面状态
图18  跑合前后齿轮的表面粗糙度
图19  齿轮振动加速度
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