制动主缸补偿孔测量仪研究本科.doc

摘 要 为了解决汽车制动主缸补偿孔传统检测手段效率低、精度差等诸多缺点，本文提出了基于CCD成像技术、光栅位移检测技术、精密机械技术和计算机实时控制与数据处理技术，研制了汽车制动主缸补偿孔(中0.31.2mm)的光电测量系统。该系统实现了缸体补偿孔的尺寸位置、边缘倒角大小以及缸体主孔内表面加工质量的非接触检测。然后在计算机上对补偿孔图像进行分析，并可以对缸体内表面加工质量进行观测从而大大提高了检测的精度效率和可靠性本文首先叙述了制动主缸补偿孔测量仪的基本功能和技术指标，接着介绍了仪器的总体结构、检测原理与方法，系统采用人机交互式测量，在螺旋杆下降的状态下将被试件安装在定位夹具上，螺旋杆上升并压紧在被试件上以使被试件的定位面与定位夹具靠紧，步进电机驱动滚珠丝杠旋转，从而带动内窥镜移动并记录光栅尺的位置信息，同时将主缸内孔表面质量信息也保存起来作为数据库的一部分内容。最后分析了系统的主要误差来源及其对系统检测精度的影响，并给出误差分析结论。 实验结果表明，系统工作性能稳定可靠，系统的孔径检测达到精度0.03% FS，分辨率0.5mm，重复性0.01mm的要求。 ABSTRACT In order to solve the brake master cylinder compensation hole traditional detection means the efficiency is low, the poor precision disadvantages, this paper put forward based on CCD imaging technology, grating displacement detection technology, precision machinery technology and computer real-time control and data processing technology, developed the brake master cylinder compensation hole (0.3-1.2 mm) photoelectric measuring system. In this system, the size of the cylinder block compensation hole position, edge chamfering size and the cylinder block surface processing quality hole non-contact detection. And then on the computer to compensate for the hole image analysis, and to the cylinder surface processing quality observation which greatly improve the accuracy checking efficiency and reliability. This paper firstly describes the brake master cylinder compensation hole of measuring apparatus basic functions and technology index, then introduce the general structure of the instrument, detection principle and method, the system adopts the man-machine interactive measurements, the spiral pole of the decline of the state will be installed in the positioning jig specimens, spiral bar up and pressure in be specimens to be positioning surface and the position of the specimens of fixture close, stepping motor drive the ball screw rotation, thus promote endoscope mobile, and record the feet of the grating position information, and at the same time will be main cylinder hole surface qu