大长径比深孔零件几何参数检测系统

发布时间：2018-07-09 13:48

本文选题：深孔零件 + 几何参数　；参考：《合肥工业大学》2017年硕士论文

【摘要】：我国的装备制造业正经历快速升级与发展,这对机械零件的加工制造精度提出了更高的要求。孔类零件作为最常见的零件类型之一,广泛应用于各类装备的机械结构中,其制造精度将对装备的整体性能产生影响。因此,对孔类零件的几何参数进行精密检测,对于保障其生产质量、提高加工与装配精度具有重要意义。当前,对大长径比深孔零件,尤其是内径尺寸较小的孔件进行精密检测,由于测量空间较为局促及被测件轴向尺寸较大等多种因素的限制,仍然存在较大的困难,现有的测量方案及测量设备大多只能对被测零件的单一参数进行检测。本文根据实际测量任务要求,设计了一套用于对大长径比深孔零件进行多几何参数检测的系统。完成了检测系统的整体设计及搭建;提出了一种对测量单元进行校准的方法;并对检测系统的主要误差项进行了分离及补偿。使用该系统对深孔零件进行几何参数检测,被测零件经一次装夹,系统即可对其内孔任一横截面的尺寸进行测量,并对内孔的圆度及直线度进行评定。
[Abstract]:China's equipment manufacturing industry is undergoing rapid upgrading and development, which puts forward higher requirements for the machining and manufacturing accuracy of mechanical parts. As one of the most common types of parts, hole parts are widely used in the mechanical structures of all kinds of equipment, and their manufacturing accuracy will have an impact on the overall performance of the equipment. Therefore, it is very important to measure the geometric parameters of hole parts to ensure the quality of production and improve the precision of machining and assembly. At present, there are still some difficulties in the precision inspection of the parts with large aspect ratio, especially those with small inner diameter, because of the limitation of the limited measuring space and the large axial dimension of the tested parts. Most of the existing measuring schemes and measuring equipments can only detect the single parameter of the tested parts. In this paper, according to the requirement of practical measurement, a system is designed to detect the geometric parameters of the parts with large ratio of length to diameter. The whole design and construction of the detection system is completed, a calibration method for the measurement unit is proposed, and the main error items of the detection system are separated and compensated. The system is used to measure the geometric parameters of the deep-hole parts. The system can measure the dimension of any cross section of the inner hole and evaluate the roundness and straightness of the inner hole after one clamping.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH161.12

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