某DCT双离合变速器短圆柱滚子轴承高扭耐久失效分析  

A DCT dual clutch transmission high torque durability test cylinder roller bearing failure analysis

作　　者：刘亮 吴宇 Liu Liang;Wu Yu

机构地区：[1]麦格纳动力总成(江西)有限公司,江西省南昌市330013

出　　处：《时代汽车》2023年第20期168-170,195,共4页Auto Time

摘　　要：现有DCT双离合变速器平台成熟布置设计,在输出轴上一端通过深沟球轴承进行轴向定位,另一端采用成本及布置空间更具有优势的无内圈短圆柱滚子轴承,本文从某DCT双离合变速器搭载新车型开发过程中,高扭耐久试验多次出现短圆柱轴承外圈内壁剥落问题,展开调查研究,发现短圆柱滚子的修形影响了轴承承载过程中的接触应力,通过调整滚子修形通过了试验。The existing DCT dual-clutch transmission platform mature layout design,at the output shaft one end use deep groove ball bearings for axial positioning,the other end use low cost and downsize cylinder roller bearings(CRB)without inner ring,this paper from a new vehicle application development with DCT250 dual-clutch transmission powertrain,during high torque durability test many times cylinder roller bearing outer ring inner raceway spalling problem to study and investigate,found that the modifi cation of cylinder roller crowning aff ected the contact stress in the bearing loaded running,by adjusting the roller crowning value the test passed.

关 键 词：双离合变速器 短圆柱滚子轴承 滚道剥落 接触应力 滚子修形 

分 类 号：U46[机械工程—车辆工程]