新型涡旋压缩机涡旋盘的数控加工

发布时间：2018-05-18 00:32

本文选题：涡旋压缩机 + 组合型线　；参考：《兰州理工大学》2014年硕士论文

【摘要】：随着以高效低耗、结构紧凑、运行平稳等优势而著称的涡旋压缩机的应用越来越广泛,涡旋机械的工业应用不断得到拓展。涡旋盘作为涡旋压缩机的关键执行部件,它的设计与制造对压缩机性能的影响至关重要。近年来研究人员对传统单一型线涡旋盘进行了改进,提出了以组合型线作为涡旋盘型线的新型涡旋压缩机。新型涡旋盘型线虽然从理论上提高了压缩机的某些性能指标,但是也增加了该类压缩机的制造难度。因此研究新型涡旋盘的加工制造成为新型涡旋压缩机实现产业化生产的关键。本文首先基于涡旋压缩机型线的共轭啮合原理,按照涡旋型线法向等距线法理论,分析了组合涡旋型线的设计思路；选取圆的渐开线—高次曲线—圆弧这一涡旋型线的组合形式,设计了一个新型组合型线涡旋盘,建立了其完整齿廓的数学模型和三维实体模型。然后,根据新型组合型线涡旋盘的特点及加工精度要求,设计了涡旋盘的加工工艺,对其粗、精加工阶段采用不同的方法来实现：基于Pro/E的辅助加工制造模块对涡旋盘的整体进行粗加工；针对新型涡旋盘涡旋齿型线的构成特点,提出了用双圆弧样条插值方法对涡旋齿型线进行拟合,来实现涡旋盘的精加工。最后,基于现有加工设备对所设计的新型涡旋盘进行了实体加工,通过三坐标测量机对涡旋盘精度进行检测,结果表明加工质量满足要求。本文提出了一套新型组合型线涡旋盘从型线设计到加工检测的完整流程,并实现了零件加工和精度检验。本文提出的基于双圆弧样条插值法的新型涡旋盘数控加工轨迹设计算法,与采用传统CAD/CAM软件加工新型涡旋盘相比,生成的轨迹点个数更少,加工效果更好,较好地保证了刀具路径的光滑性和连续性,且该方法的通用性和实用性也较强。由此为新型涡旋涡旋压缩机涡旋盘的加工制造提供一种新的方法和思路。
[Abstract]:With the advantages of high efficiency, low consumption, compact structure and smooth operation, the application of scroll compressor is becoming more and more extensive, and the industrial application of scroll machinery has been expanded. As the key component of scroll compressor, the design and manufacture of scroll disc are very important to the performance of compressor. In recent years, researchers have improved the traditional single profile scroll disk, and proposed a new type of scroll compressor which uses the combined profile as the vortex disk profile. Although the new type of scroll disk profile improves some performance indexes of compressor theoretically, it also increases the manufacturing difficulty of this kind of compressor. Therefore, the research on the manufacture of new type scroll disc is the key to realize the industrialization of the new type scroll compressor. In this paper, based on the conjugate meshing principle of the vortex compressor profile, the design idea of the combined vortex profile is analyzed according to the theory of the normal isometric method of the vortex profile. In this paper, the involute, high-order curve and circular arc of a circle are selected, and a new type of vortex disk is designed, and its complete tooth profile mathematical model and three-dimensional solid model are established. Then, according to the characteristics and machining accuracy requirements of a new type of combined linear scroll disk, the machining technology of the vortex disk is designed, and the machining process of the vortex disk is coarse. In the stage of finishing, different methods are used to realize: rough machining of the whole scroll disk based on Pro/E aided manufacturing module, and the characteristics of the new type vortex tooth profile. In this paper, a double arc spline interpolation method is proposed to fit the vortex profile to realize the finish machining of the scroll disk. Finally, based on the existing processing equipment, the designed new scroll disk is processed in solid, and the precision of the scroll disk is tested by CMM. The results show that the machining quality meets the requirements. In this paper, a set of complete flow from profile design to machining inspection for a new type of combined line vortex disk is presented, and parts machining and accuracy testing are realized. In this paper, a new NC machining path design algorithm for vortex disk based on double arc spline interpolation method is proposed. Compared with the traditional CAD/CAM software, the number of trace points generated is less and the machining effect is better. The smoothness and continuity of the tool path are well guaranteed, and the method is more versatile and practical. This provides a new method and thought for the manufacture of new scroll compressor scroll disc.
【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TG659;TH45

【参考文献】