工艺强化后传动系齿轮疲劳寿命增长潜力的研究  

STUDYING INCREASE POTENTIAL OF DRIVELINE GEAR FATIGUE LIFE AFTER TECHNICAL STRENGTHENING

作　　者：寇宏滨[1] 郑松林[1] 卢曦[1] 

机构地区：[1]上海理工大学机械工程学院汽车研究所,上海200093

出　　处：《机械强度》2005年第2期232-235,共4页Journal of Mechanical Strength

基　　金：国家自然科学基金(50375101);上海市教委科技发展基金(02QK01);上海汽车工业科技发展基金(0329)的资助。~~

摘　　要：为了探索工艺强化后齿轮疲劳寿命的增长潜力,采用轿车齿轮实物物理试验的方法,比较系统地研究某轿车齿轮在低幅载荷作用下结构疲劳寿命的改变,证实低幅应力区内存在一个强化载荷区。用强化载荷区内的不同载荷对齿轮进行预锻炼,齿轮的疲劳寿命会有不同程度的提高,最高可使疲劳寿命提高一倍。在试验结果的基础上,通过数值插值,进一步反映出强化后齿轮疲劳寿命的变化趋势,为摸索利用磨合工序提高齿轮的疲劳寿命提供技术依据。In order to explore increase potential of gear fatigue life after technical strengthening, experimental studies were carried out on real gear to investigate the influence of low amplitude preloading on structure life. It is proved that a strengthening area exists in low amplitude loading area. Fatigue lives of gears have been increased in some extent with preloading within this area. It can make fatigue life double at most. Based on physical tests, it illuminates the trend of strengthened gear fatigue life more by means of numerical interpolation and provides some technical supports for increasing fatigue life of gear with rubdown.

关 键 词：疲劳寿命 低载强化 汽车传动系齿轮 

分 类 号：U463.3[机械工程—车辆工程] U467.497[交通运输工程—载运工具运用工程]