齿类件是机械中的重要零件, 在机械中承担着传递动力和运动等重要功能。齿类件失效往往是因为齿的磨损和断裂而引起。但是, 齿类件修复一直是机械行业关注的热点和难点问题。本文针对齿类件损伤齿的再制造, 介绍了装备再制造工程的内涵和特点, 阐述了激光再制造的概念和技术途径; 对齿类件齿损伤形式进行了分类, 并针对不同损伤形式, 从技术工艺、再制造齿的性能和形状等多方面, 探讨了损伤齿的激光再制造的关键问题, 并结合研究实例, 分析了断齿、齿面磨损和齿端磨损等损伤齿类件的激光再制造方法。最终指出, 激光再制造是实用性很强的齿类件修复技术, 具有广阔的应用前景。

Gears are important components in mechanism, which take roles of transfering power and speed. Their failures are mainly caused by tooth fracture and abrasion. However, reparation of the damaged gears is still a popular and hard problem in machinery industry. In this paper, as to remanufacturing or repairing the damaged gear-tooth, it introduced connotation and technical characters of remanufacture engineering, stated connotation and technical processes of laser remanufacture. Then it devided the damage of gear tooth into three sorts, and discussed the vital problems on laser remanufacturing of the damaged gear tooth from various aspects such as remanufacturing processing, performance and shape of the remanufactured teeth. With practical samples, it intepreted the laser remanufacturing methods for the fracture, tooth-surface abrasion and tooth-end abrasion gears individually. At last, it points out that laser remanufacturing is great practical technology for damaged gear repair, which shows great prosperous applications.