平面二次包络环面蜗杆副加工误差高效分析及测量方法的研究

发布时间：2018-11-17 11:25

【摘要】：平面二次包络环面蜗杆副具有承载能力强、传动效率高、使用寿命长等优良传动特点，在机械传动领域应用极其广泛。目前国产平面二次包络环面蜗杆副主要采用传统的范成法加工，导致了我国平面二次包络环面蜗杆副相关产品的制造工艺与世界先进同类产品差距较大，主要表现在制造工艺水平落后，产品精度难以满足更高的传动场合。究其原因主要是平面二次包络环面蜗杆副齿面加工工艺设备落后，需要配备精密专用机床和专用加工刀具，并且各种机床误差在加工制造过程中对蜗杆副加工均会产生显著影响。如何系统研究平面二次包络环面蜗杆副机床加工误差以及加工误差的测量方法是目前提升我国平面二次包络环面蜗杆副制造水平的一项重要课题。因此，迫切需要深入研究平面二次包络环面蜗杆副机床加工误差以及加工误差测量方法。本文综合利用平面二次包络环面蜗杆副空间啮合原理、数控加工技术、虚拟测量原理、多体系统理论及VC++、UG/grip编程语言等理论与手段，分析平面二次包络环面蜗杆副空间啮合机理，揭示平面二次包络环面蜗杆副空间机床误差影响规律，探索基于平面二次包络环面蜗杆副数控加工编程仿真的虚拟测量方法。具体研究工作如下： (1)综述平面二次包络环面蜗杆副的数控加工方法，分析多体系统理论在数控加工误差分析中的应用及其误差模型的建立方法，介绍虚拟测量原理、方法、步骤，为后续研究打下理论基础。 (2)依据平面二次包络环面蜗杆副数控加工机床具体几何结构，通过分析机床空间各项原始几何运动误差，建立机床的空间几何误差传递模型。 (3)在上述的基础上，，通过推导平面二次包络环面蜗杆副廓面方程，利用多体系统理论建立平面二次包络环面蜗杆副的加工误差综合模型，利用Matlab工具对平面二次包络环面蜗杆副机床原始误差进行计算仿真，揭示机床各项原始误差对平面二次包络环面蜗杆副廓面加工误差的综合影响规律。 (4)基于虚拟测量原理建立平面二次包络环面蜗杆副加工误差虚拟测量方法，利用UG、VC++开发其加工误差虚拟测量平台，实现基于蜗杆和蜗轮数控加工仿真的加工误差高效虚拟测量与预报。综上，本文的研究为平面二次包络环面蜗杆副数控加工误差高效分析与测量提供了有效解决方案，为提升我国平面二次包络环面蜗杆副制造工艺水平奠定了理论基础。
[Abstract]:The planar secondary enveloping toroidal worm pair is widely used in the field of mechanical transmission because of its strong bearing capacity, high transmission efficiency, long service life and so on. At present, the domestic planar double enveloping toroidal worm pair is mainly processed by the traditional method, which leads to a big gap between the manufacturing technology of our country's plane quadratic enveloping toroidal worm pair and the world's advanced products of the same kind. The main performance is that the manufacturing technology level is backward, the product precision is difficult to meet the higher transmission situation. The main reason is that the processing equipment of the planar secondary enveloping worm gear pair is backward, and it needs to be equipped with a special precision machine tool and a special machining tool. And all kinds of machine tool errors have a significant effect on worm gear machining in the process of manufacturing. How to systematically study the machining error and the measuring method of machining error of planar quadratic enveloping toroidal worm pair is an important task to improve the manufacturing level of planar double enveloping toroidal worm pair in China. Therefore, it is urgent to study the machining error and measuring method of planar quadratic enveloping worm pair machine tool. In this paper, the space meshing principle, NC machining technology, virtual measurement principle, multi-body system theory, VC, UG/grip programming language and so on are synthetically used. This paper analyzes the space meshing mechanism of the planar quadratic enveloping toroidal worm pair, reveals the influence law of the spatial machine tool error of the planar quadratic enveloping toroidal worm pair, and probes into the virtual measuring method based on the numerical control programming simulation of the planar quadratic enveloping toroidal worm pair. The specific research works are as follows: (1) the NC machining method of planar quadratic enveloping toroidal worm pair is summarized, and the application of multi-body system theory in NC machining error analysis and the method of establishing error model are analyzed. This paper introduces the principle, method and steps of virtual measurement, which lays a theoretical foundation for further research. (2) according to the concrete geometric structure of NC machining machine tool for planar quadratic enveloping toroidal worm gear, the transmission model of spatial geometric error of machine tool is established by analyzing the original geometric motion errors of machine tool space. (3) on the basis of the above, by deducing the profile equation of the planar quadratic enveloping toroidal worm pair, the machining error synthesis model of the planar quadratic enveloping toroidal worm pair is established by using the multi-body system theory. The original error of the planar quadratic enveloping toroidal worm pair is calculated and simulated by using Matlab tool, and the comprehensive influence of the original error of the machine tool on the machining error of the planar quadratic enveloping toroidal worm pair is revealed. (4) based on the virtual measurement principle, a virtual measurement method for machining error of planar double enveloping toroidal worm pair is established, and a virtual measuring platform for machining error is developed by using UG,VC. The virtual measurement and prediction of machining error based on NC machining simulation of worm and worm wheel are realized. In summary, the research in this paper provides an effective solution for the analysis and measurement of the NC machining error of the planar quadratic enveloping toroidal worm pair, and lays a theoretical foundation for improving the manufacturing technology level of the planar double enveloping toroidal worm pair in China.
【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】：TH132.44;TH161

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