基于冷挤压强化技术的传动箱可靠性增长研究  

Research on Reliability Growth of the Gear Box Based on the Cold-extruded Strengthening Technology

作　　者：范知友[1] 谢东升 FAN Zhi-you;XIE Dong-sheng(China North Vehicle Research Institute,Beijing 100072,China;the First Training Base of the PLA Army,Jurong Jiangsu 212421,China)

机构地区：[1]中国北方车辆研究所,北京100072 [2]解放军陆军第一综合训练基地,江苏句容212421

出　　处：《车辆与动力技术》2018年第3期14-17,29,共5页Vehicle & Power Technology

摘　　要：针对特种车辆传动箱螺纹孔处疲劳损坏的情况,基于金属物理及弹塑性原理的冷挤压强化技术和螺纹齿各部位挤压量的不同匹配对疲劳强度的影响,找出了较佳的挤压强化方案.按疲劳损伤等效法则将实测的载荷谱转化为程序载荷谱并进行了台架模拟试验及道路行驶试验,试验结果表明采用非均匀挤压量技术对螺纹齿根、齿侧和齿尖同时挤压,可大幅度提高疲劳寿命.For the fatigue damage to the threaded hole of the special vehicle gear box, and based on the cold-extruded reinforcement technology of the metal physics and elastoplastic theot7- and effect of fatigue strength by the different amount of the extrusion in various parts of the screw tooth, an improred scheme of the cold-extruded reinforcement on the threaded hole is proposed. According to the principle of fatigue damage equivalent, the tested load spectrum is converted into the program load spectrum to do the bench test and also the toad test. The test results show that the non-uniform extruded to the screw tooth tip, side and toot at the same time by the non-uniform extruded reinforcement technology can largely increase the fatigue life.

关 键 词：传动箱体 螺纹孔 非均匀挤压强化 疲劳寿命 可靠性 

分 类 号：U462.35[机械工程—车辆工程] U463.218.9[交通运输工程—载运工具运用工程]