【作者】 邢刚；

【导师】 林巨广；

【作者基本信息】 合肥工业大学 ， 机械设计及理论， 2006， 硕士

【摘要】 为了保证汽车驱动桥主锥总成装配质量,在总成装配工艺中,要保证预紧刚度在规定的数值范围内。作为一种经济实用方法,多数车型的这个装配工艺要求是通过加减调整垫圈来实现的。调整垫片厚度对圆锥滚子轴承的轴向力分配有很大影响。 本文详细阐述了一种新型汽车驱动桥主锥总成选挚机,该设备应用计算机控制的测量机来智能化测量主锥齿轮轴的轴向间隙,以优化选择合适的隔套垫片,通过垫片来消除驱动桥主齿轮轴轴向间隙并达到设定的预紧力矩,以提高生产效率和产品质量。 然后本文对主齿轴承的预紧从力学角度进行了详细的分析和计算,提出了轴承预紧力的确定原则,同时为调整垫片的选择提供了理论依据;在建立动态测量选挚模型中,充分考虑了系统的柔性化。为消除因方便测量而简化的模型与实际装配工况间所存在的差别,对测量模型进行了分析并给出了补偿值,考虑到不同润滑状况等各因素对测量精度的影响,使测量模型更为合理,从而提高测量精度,本文对系统的主体结构、测量原理和测量过程等方面进行了详细的论述和分析。更多还原

【Abstract】 To guarantee quality of the driving taper assembly the automobile, the preload stiffness should be restricted into prescriptive scope.As an economical method,this assembly requirement is realized by adjusting the thickness of gaskets, because the thickness of gaskets has a great effect on the distribution of axial load of the taper roller bearing.This paper mainly elaborates a novel preselection machine of gaskets which is equipped on the assembly line of the main gear reducer of automobile’ s driving axle. This computer-controlled machine can measure the clearance along axes and select suitable.gasket so that the clearance along axes of main gear axis can be eliminated and the pre-determined tightening moment can be achieved.Thus the production efficiency and the quality of products can be improved greatly.Then detailed analysis and calculation are carried out for the pre-tightening force of the bearings, and the principle of determining the pre-tightening force of the bearings is also put forward. Meanwhile, the theory basis for selecting gasket is analysed.In establishing of dynamic gasket-selecting measuring model, the system’s flexibility has been fully considered. Because the simplified measuring model is distinguished from the true assembly’s situation, analysing and compensatings are given in the measuring model.Considering the different lubricative situation and other uncertain factors in the measurment, the measuring model is improved in order to get the better measure precision. Also detailed exposition and analysis for the main structure of system, measuring principle and measuring process are present in the paper.更多还原