主减速器综合试验台测量及控制关键技术研究

发布时间：2019-03-17 19:04

【摘要】：主减速器是汽车中最主要的工作零件之一,其作用是降低变速箱输出的动力和转速、改变旋转方向和增大力矩,并将动力传输到驱动轴上,给予汽车足够的牵引力和车速。主减速器的生产与装备质量会影响到整台汽车的性能,而在主减速器的装备过程中,非常重要的一环就是齿侧间隙的测量与调整。合适的齿侧间隙可以让主减速器提高传动平顺性、减少噪声、延长工作寿命。本文首先简单介绍了主减速器综合试验台的整体结构以及各机构的功能,接着针对齿侧间隙的测量调整机构进行重新设计,并简单介绍了以PLC为控制中心的电气控制系统。其次对齿轮副的啮合理论进行了研究,得出标准齿侧间隙的计算公式,接着设计了两种齿侧间隙的测量方法：杠杆测量法和旋转测量法,并得出了计算公式。设计了齿侧间隙的调整方法以及其调整公式。然后对设备的控制器进行选型,并最终选择西门子公司的S7-300 PLC。以结构化的编程方式对程序进行编辑。最后以主减速器综合试验台为平台,以十台代号为440的主减速器工件为对象,进行了三组试验。第一组试验测量出了每台工件的精确速比；第二组试验使用旋转测量法测量了各台工件的齿侧间隙,并人工使用百分表测量,对比数据,验证了旋转测量法的正确性；第三组试验对齿侧间隙不合格的工件进行了调整,并重新测量齿侧间隙,验证了齿侧间隙调整方法的可行性。
[Abstract]:The main reducer is one of the most important parts in the automobile. Its function is to reduce the output power and speed of the gearbox, change the rotation direction and increase the torque, and transfer the power to the drive shaft to give the car enough traction and speed. The production and equipment quality of the main reducer will affect the performance of the whole automobile. In the equipment process of the main reducer, it is very important to measure and adjust the clearance of the tooth side. Proper tooth clearance can improve driving comfort, reduce noise and prolong working life of the main reducer. In this paper, the whole structure of the main reducer test-bed and the functions of each mechanism are introduced briefly, then the measuring and adjusting mechanism of tooth side clearance is re-designed, and the electrical control system based on PLC is introduced briefly. Secondly, the meshing theory of the gear pair is studied, and the calculation formula of the standard tooth side clearance is obtained. Then, two kinds of measuring methods of the tooth side clearance are designed: lever measurement method and rotation measurement method, and the calculation formulas are obtained. The adjustment method of tooth side clearance and its adjustment formula are designed. Then select the controller of the device and finally select the S7 / 300 PLC. of Siemens. Edit the program in a structured way. Finally, three groups of tests were carried out on the platform of the comprehensive test-bed of the main reducer and the object of ten pieces of the main reducer named 440. The first group of tests measured the accurate speed ratio of each workpiece, the second group used rotating measurement method to measure the tooth side clearance of each workpiece, and manually used the dial meter to measure the accuracy of the rotation measurement method. The third group of tests has adjusted the unqualified tooth-side clearance and re-measured the tooth-side clearance, and verified the feasibility of the tooth-side clearance adjustment method.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U467.523

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