PC型单螺杆压缩机型线设计及关键零部件制造实验研究

发布时间：2018-02-20 15:52

本文关键词： PC型单螺杆压缩机型线设计快速成型制造加工仿真数控机床　出处：《湘潭大学》2012年硕士论文　论文类型：学位论文

【摘要】：PC型单螺杆压缩机代表当前国际上第三代容积式压缩机领域的最新技术，星轮可以轴向移动自动补偿啮合副的磨损间隙，被认为是螺杆压缩机中节能效果最好、寿命最长、压缩性能最稳定的类型。目前PC型单螺杆压缩机仅日本和美国的两家公司能够生产，并将该技术列为“21世纪的战略产品”，对其它国家严格保密，由于技术的垄断，PC型单螺杆压缩机的型线设计和核心制造技术没有公开的文献资料。提出一种新型适用的PC型单螺杆压缩机啮合型线，掌握拥有自主知识产权的制造技术，，是目前国内压缩机行业最为紧迫的问题。本文在综合参考国内外学者对CP型和CC型单螺杆压缩机研究的基础上，从啮合原理和实验研究两方面初步探讨了PC型单螺杆压缩机型线设计及其关键零部件制造技术。在分析PC型单螺杆压缩机动态啮合过程以及空间运动关系的基础上，建立圆锥和圆柱包络母面的数学模型，推导出螺杆螺槽啮合型线的数学表达式和一次包络啮合条件。利用反包络求解方法，推导出星轮齿廓的二次包络型线数学表达式和啮合条件。按照型线设计的尺寸要求和工艺结构，推导出螺杆和星轮的设计参数，使用MATLAB软件编程计算圆锥和圆柱包络啮合副型线的离散点坐标，导入UG软件中建立其空间共轭曲面，构建其螺杆和星轮的三维模型。利用光固化快速制造方法对PC型单螺杆压缩机的螺杆与星轮进行快速成型制造实验研究。调试并分析快速成型制造的螺杆和星轮，对比其理论设计参数，啮合曲面制造误差小，星轮轮齿与螺槽侧面实现无缝隙啮合，轮齿在螺槽内可以正常滑动，验证了型线设计和UG三维建模的正确性。制订了PC型单螺杆压缩机螺槽五轴联动包络铣削加工工艺方案，按照DMU80T五轴联动机床的结构特点，对机床的轴运动进行求解，用VB语言编写DMU80T机床后置处理程序。在VERICUT软件中，按照螺杆实际加工过程进行虚拟加工仿真，仿真结果证明了圆锥和圆柱包络啮合副五轴联动铣削加工的可行性。通过对PC型单螺杆压缩机螺杆数控加工实验，对比分析螺杆数控加工的实物模型和螺杆包络理论设计模型以及VERICUT软件仿真加工模型，验证了VERICUT软件虚拟加工螺杆的正确性，为实现螺杆的高效批量化生产提供了可能。
[Abstract]:The new technology of PC type single screw compressor represents the current international third generation volume compressor field, the star wheel can wear clearance automatic compensation axial movement of meshing pair, is considered the best energy-saving effect of screw compressor, the longest, the most stable type compression performance. The PC type single screw compressor only in Japan and the United States the two companies are able to produce, and the technology will be listed as a "strategic product" in twenty-first Century, strictly confidential to other countries, due to the monopoly of technology, line type PC type single screw compressor design and core manufacturing technology no open literature. Put forward a new application of PC type single screw compressor profile, master manufacturing technology with independent intellectual property rights, is currently the domestic compressor industry most urgent problems. This paper researches on the CP type and CC type single screw compressor in the domestic and foreign scholars On the basis of the two aspects of the meshing principle and experimental research, the design of the type PC single screw compressor and the manufacturing technology of the key parts are preliminarily discussed.
Based on the analysis of the dynamic meshing PC type single screw compressor and space motion relation, the mathematical model of the conical and cylindrical envelope of the mother, and then deduced the mathematical expressions of screw meshing profile and enveloping conditions. Using the method of solving inverse envelope, deduced the star gear profile two enveloping line mathematics the expression and meshing condition. According to the size requirements of line design and process structure, design parameters and push SCREW-SATELLITES derived coordinates of discrete points, using MATLAB software programming calculation of conical and cylindrical envelope meshing profile, the space of conjugate surfaces into UG software, construction of three-dimensional model of the screw and wheel.
Experimental study of rapid prototyping manufacturing method using fast curing of PC type single screw compressor and screw wheel. The debugging and analysis of rapid prototyping and manufacturing of screw and wheel, compared the theoretical design parameters, meshing surface error is small, the star wheel gear and the screw groove side to achieve a seamless meshing, the tooth in the screw groove can be normal slide, verify the correctness of the profile design and UG modeling.
For the PC type single screw compressor screw five axis envelope milling process, according to the structure characteristics of DMU80T five axis machine tool, for solving the axial movement of the machine, using VB language DMU80T postprocessor program. In VERICUT software, virtual machining simulation of screw according to the actual machining process, the simulation results show that the feasibility of conical and cylindrical envelope meshing of five axis milling. Based on a PC type single screw compressor screw NC machining experiment, comparison of physical model and screw envelope theory of processing screw analysis design model and VERICUT simulation model, to verify the VERICUT software of virtual machining screw, provides the possibility for efficient mass production of screw.

【学位授予单位】：湘潭大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH45

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