引用本文:李向波,李涛,石博文,王东,张元良.基于齿面缺陷激光修复几何数学模型的齿轮修复[J].中国表面工程,2020,33(3):129~136
Li Xiangbo,Li Tao,Shi Bowen,Wang Dong,Zhang Yuanliang.Gear Repairing Based on Geometric Mathematical Model of Tooth Surface Defects by Laser[J].China Surface Engineering,2020,33(3):129~136
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基于齿面缺陷激光修复几何数学模型的齿轮修复
李向波1,2, 李涛1, 石博文1, 王东1, 张元良1
1.大连理工大学 机械工程学院, 大连 116024;2.三一石油智能装备有限公司, 北京 102202
摘要:
激光熔覆作为一种再制造技术被广泛应用在机械零部件的修复。 在采用激光熔覆技术对齿轮齿面缺陷进行修复时,为减小后续机械加工的难度,应使轮齿齿面上的熔覆层轮廓接近齿轮的原始齿廓。 基于齿廓加工原理建立了齿面缺陷激光修复几何数学模型。 通过此修复几何数学模型可计算得到修复齿廓不同部位时,轮齿需要偏转的角度以及偏转后齿廓待修复区域的倾斜角度。 实验结果表明,利用该几何数学模型对齿轮齿面缺陷采用激光熔覆技术进行修复,可以使轮齿齿面上熔覆层的轮廓与齿轮原始齿廓较为接近,并且熔覆层轮廓与齿轮原始齿廓的距离不超过 0. 7 mm;此外,轮齿齿面在熔覆过程中虽然倾斜角度最大达到 51. 84°,但熔覆层轮廓与齿轮原始齿廓的最小距离不小于 0. 1 mm。
关键词:  激光熔覆  齿面缺陷  齿轮修复  几何数学模型  熔覆层轮廓
DOI：10.11933/j.issn.1007-9289.20200222001
分类号:TN249
文章编号:1007-9289(2020)03-0129-08
文献标识码:A
基金项目:国家自然科学基金(51975099)；宁夏回族自治区重点研发计划(2018BDE02045)
Gear Repairing Based on Geometric Mathematical Model of Tooth Surface Defects by Laser
Li Xiangbo1,2, Li Tao1, Shi Bowen1, Wang Dong1, Zhang Yuanliang1
1.School of Mechanical Engineering, Dalian University of Technology, Dalian 116024 , China;2.SANY Petroleum Intelligent Equipment Co.Ltd., Beijing 102202 , China
Abstract:
As a remanufacturing technology, laser cladding is widely used in the repair of mechanical parts. In order to reduce the difficulty of machining after defects of tooth surface are repaired by the laser cladding technology, the profile of coating should be made similar to the original tooth profile. Geometric mathematical model of tooth surface defects by laser repair is established based on the processing principle of tooth profile. When different parts of tooth profile are repaired, deflection angles of tooth and inclination angles of tooth can be given by the geometric mathematical model. The experimental results show that the profile of coating is very similar to the original tooth profile when laser cladding has been performed to repair the defects of tooth surface by the geometric mathematical model. And the distance is less than 0. 7 mm between the profile of coating and the original tooth pro- file. In addition, although the maximum inclination angle of tooth is 51. 84° in the laser cladding process, the minimum distance is greater than 0. 1mm between the profile of coating and the original tooth profile.
Key words:  laser cladding  defects of tooth surface  gear repair  geometric mathematical model  profile of coating
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