汽车转向器摇臂轴非圆齿扇修形方法及性能分析  

Modification Method and Performance Analysis of Automobile Steering Rocker Shaft Non-circular Gear Sector

作　　者：丁国龙[1] 余金舫 明廷伯 张雅丽[1] 

机构地区：[1]湖北工业大学机械工程学院,湖北武汉430068

出　　处：《机械传动》2017年第12期43-48,共6页Journal of Mechanical Transmission

基　　金：湖北省重大科技专项(2012AAA07)

摘　　要：循环球式转向器的传动性能与摇臂轴非圆齿扇的齿廓形状密切相关。针对转向器齿扇齿条副在不同角度啮合时要求的啮合间隙不同的问题,提出了使用变变位修形方法对摇臂轴齿扇进行修形。将变变位修形方法与常用的偏心修形方法进行比较,分析了两种齿扇齿条副的啮合运动,计算了齿扇的相关参数并给出了两种修形的数控加工方法。在MATLAB中进行了模拟加工,得出了两种修形方式的齿扇齿廓坐标。考虑到实际装配为定轴传动,计算了两种齿扇齿条副的传动间隙。最后利用ADAMS对其进行传动受力分析,表明了两种修形方式均能有效减小传动啮合力。The transmission performance of the recirculating ball steering is closely related to the tooth profile shape of the rocker shaft non - circular gear sector. Aiming at the problem of the mesh clearance re- quired by different angles is different between steering gear and rack, a means is proposed to repair the rocker arm shaft by using the varying - modification - coefficient modification method. The varying - modification - co- efficient modification method is compared with eccentric modification method and the meshing motion of two kinds of gear rack pairs is analyzed, the related parameters of the gear sector is calculated, and two kinds of NC machining methods are given. The processing simulation is carried out in MATLAB, and the tooth profile coor- dinates of the two types of modification methods are obtained. Taking into account the actual assembly for the fixed axis transmission, two kinds of rack and pinion gear transmission clearance are calculated. Finally, the driving force which is analyzed by using ADAMS shows that, the two kinds of modification methods can effec- tively reduce the transmission of meshing force.

关 键 词：转向器 非圆齿扇 变变位修形 偏心修形 啮合性能 

分 类 号：TH132.424[机械工程—机械制造及自动化] U463.43[机械工程—车辆工程]