硬齿面齿轮随机断裂的多种失效模式、原因和预防  

Multiple Failure Modes,Causes and Prevention of Random Fracture for Hard Tooth Flank Gears

作　　者：朱孝录[1,2] Zhu Xiaolu(University of Science&Technology Beijing,Beijing 100083,China;World Transmission Technology(Tianjin)Co.,Ltd.,Tianjin 300409,China)

机构地区：[1]北京科技大学,北京100083 [2]沃德传动(天津)股份有限公司,天津300409

出　　处：《机械传动》2022年第6期84-94,共11页Journal of Mechanical Transmission

摘　　要：综合论述了齿轮轮齿随机断裂(Random fracture)术语出现的历史沿革,以及轮齿随机断裂多种失效模式的形貌特征、失效实例、产生断裂的原因和预防措施等。当代机械工程对齿轮传动不但提出高速、重载和轻量化的要求,而且应用条件更趋苛刻,因此,轮齿随机断裂已经成为常见的失效形式。对于当今最常用的硬齿面齿轮,约有70%以上齿轮的最终弯曲失效是随机断裂。随机断裂有多种失效模式,文中论述的齿内疲劳断裂(Tooth interior fatigue fracture,TIFF)和齿侧断裂(Tooth flank fracture,TFF)都是典型的随机断裂。提出要面对轮齿随机断裂这一重要的客观存在,建议齿轮设计者、制造者和有关的专家、学者,很有必要对这一失效现象做进一步的研究和分析,以便优化设计和制造,尽可能避免轮齿发生随机断裂。The history and evolution of the random fracture terms,the morphological features,failure examples,causes and preventive measures of various random fracture modes are comprehensively discussed. Contemporary mechanical engineering proposes high speed,heavy load and light weight requirements;what’s more the application conditions are more stringent;thus,the gear tooth random fracture has become a common failure mode. For the most commonly used hard tooth flank gears today,the final bending failure of more than 70%of the gears is random fracture. There are multiple failure modes for random fractures. Both the TIFF(Tooth interior fatigue fracture)and TFF(Tooth flank fracture)discussed are typical random fractures. Facing the important objective existence of gear random fracture,it is suggested that designers,manufacturers and relevant experts and scholars of the gear should do further research and analysis of this failure phenomenon,so as to optimize the design and manufacturing,and avoid random gear fracture as much as possible.

关 键 词：硬齿面 齿轮轮齿 随机断裂 失效模式 

分 类 号：TH132.41[机械工程—机械制造及自动化]