航空齿轮滚磨光整工艺离散元仿真与试验研究  

Discrete element simulation and test study on the barrel finishing process of aviation gears

作　　者：赵泽民 李桂花 朱光照 唐进元[2] 李鑫[2] 刘青松[2] ZHAO Zemin;LI Guihua;ZHU Guangzhao;TANG Jinyuan;LI Xin;LIU Qingsong(AECC Harbin Dongan Engine Co.,Ltd.,Harbin 150066,China;State Key Laboratory of Precision Manufacturing for Extreme Service Performance,Central South University,Changsha 410083,China)

机构地区：[1]中国航发哈尔滨东安发动机有限公司,哈尔滨150066 [2]中南大学极端服役性能精准制造全国重点实验室,长沙410006

出　　处：《机械传动》2025年第2期138-144,共7页Journal of Mechanical Transmission

基　　金：国家自然科学基金项目(U22B2086)。

摘　　要：【目的】航空齿轮通常工作在高温、高速、重载等极端环境下,需具备优异的综合性能,表面完整性参数对齿轮疲劳性能有着决定性的影响。滚磨加工是一种利用磨料的机械作用提高工件表面完整性的光整工艺。为改善航空齿轮的表面完整性、提高疲劳寿命,有必要探究齿轮滚磨光整加工中齿面与磨粒接触界面的作用行为。【方法】基于离散元方法建立了航空齿轮滚磨光整仿真模型,分析了滚磨齿面材料去除情况;建立齿面三维粗糙度Sa值预测模型,设计14CrMnSiNi2MoA航空圆柱直齿轮的滚磨光整加工试验,分析了航空齿轮滚磨光整前后表面形貌和残余应力随时间的演变规律。【结果】研究结果表明:滚磨光整加工显著降低了航空齿轮表面粗糙度,并提高了表面残余压应力,但齿面各个位置的滚磨加工效果不均匀,其磨料对齿面的作用强度呈现出近齿顶>节圆处>近齿根规律。[Objective]Aircraft gears typically operate in extreme environments such as high temperatures,high speeds,and heavy loads,requiring excellent comprehensive performance.Surface integrity parameters have a decisive impact on gear fatigue performance.Rolling grinding is a finishing process that utilizes the mechanical action of abrasives to improve the surface integrity of workpieces.To improve the surface integrity and fatigue life of aviation gears,it is necessary to explore the behavior of the contact interface between the tooth surface and abrasive particles in gear rolling and polishing machining.[Methods]A simulation model for the barrel finishing of aerospace gears was established based on the discrete element method to analyze the material removal from the gear surface.A predictive model for the three-dimensional surface roughness Sa value of gear surfaces was developed.Barrel finishing experiments were designed for 14CrMnSiNi2MoA aerospace cylindrical spur gears.The evolution of surface morphology and residual stress over time,before and after finishing,was analyzed.[Results]The results indicate that barrel finishing significantly reduces the surface roughness of aerospace gears and increases surface compressive residual stress.However,the finishing effects vary across different positions on the tooth surface,with the abrasive action strength on the tooth surface following the pattern:near the gear tip>pitch circle>near the gear root.

关 键 词：航空齿轮 滚磨光整 离散元法 表面形貌 残余应力 

分 类 号：TG580[金属学及工艺—金属切削加工及机床]