涡旋压缩机定盘面轮廓度检测技术研究

发布时间：2018-11-17 10:30

【摘要】：涡旋空气压缩机是一种通过改变容腔容积来实现气体压缩的空气压缩机。涡旋空气压缩机动、静盘涡旋面的加工质量将直接影响到涡旋压缩机的工作效率、性能以及使用寿命。为了对其涡旋面的加工质量进行评定,需要对涡旋面的加工精度进行测量。本论文对涡旋压缩机定盘涡旋面测量技术的几个关键问题进行了较为详细深入的研究。 1、分析了涡旋压缩机涡旋型线的基本理论,并对现有涡旋盘型线测量方法的优缺点进行了比较；设计了涡旋压缩机涡旋盘面轮廓度非接触式测量系统的整体方案,并介绍了该系统的硬件组成；提出了基于曲面曲率变化的涡旋盘面轮廓度测量的布点策略。 2、介绍了涡旋体面轮廓度检测的主要流程和步骤,并用matlab对测量过程中可能产生的系统误差进行了详细的仿真、实验和分析。 3、对测量数据中噪声产生的机理做出了数学描述,采用三点法去除明显噪声点,并进行了仿真实验；在圆柱度和直线度滤波算法的基础上,提出了针对涡旋面轮廓度的高斯滤波算法,并进行了仿真实验。 4、介绍了涡旋面轮廓度误差评定数学模型,给出了涡旋面轮廓度误差最小二乘评定算法,并用C++语言实现了该算法。 5、在Visual C++6.0环境下,采用MFC框架编写了上位机测量软件,搭建了基于涡旋盘涡旋线加工数控专机的涡旋面面轮廓度检测实验平台。采集了涡旋面坐标数据,用最小二乘法对面轮廓度进行了评定,并将该评定结果同三坐标测量软件的结果进行比较,结果证明该方法能对涡旋面轮廓度进行有效评定。
[Abstract]:Scroll air compressor is an air compressor which can compress gas by changing the volume of cavity. The working efficiency, performance and service life of the scroll compressor are directly affected by the machining quality of the vortex surface. In order to evaluate the machining quality of the vortex surface, it is necessary to measure the machining accuracy of the vortex surface. In this paper, some key problems of vortex surface measurement technology of scroll compressor are studied in detail. 1. The basic theory of vortex profile of scroll compressor is analyzed, and the advantages and disadvantages of the existing methods are compared. The whole scheme of the contactless measuring system for the profile of the vortex disk surface of the scroll compressor is designed, and the hardware composition of the system is introduced, and the placement strategy of the profile measurement of the vortex disk surface based on the change of the curvature of the curved surface is put forward. 2. The main flow and steps of vortex decent profile detection are introduced, and the possible systematic errors in the measurement process are simulated, tested and analyzed by matlab. 3. The mechanism of noise generation in measurement data is described in mathematics, and the obvious noise points are removed by three-point method, and the simulation experiments are carried out. On the basis of the cylindrical and straightness filtering algorithms, a Gao Si filter algorithm for the profile of vortex surface is proposed, and a simulation experiment is carried out. 4. The mathematical model for evaluating the profile error of vortex surface is introduced, and the least square algorithm for evaluating the contour error of vortex surface is given, and the algorithm is implemented in C language. 5. Under the environment of Visual C 6.0, the upper computer measurement software is programmed by using MFC framework, and the experimental platform for measuring the profile of vortex surface is built based on the numerical control machine for vortex line machining. The coordinate data of vortex surface are collected and evaluated by the least square method. The results are compared with the results of the 3D coordinate measurement software. The results show that the method can effectively evaluate the profile of the vortex surface.
【学位授予单位】：南昌大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH45;TP311.11;TG83

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