TI蜗杆传动机构虚拟样机的设计与结构模态分析

发布时间：2018-01-04 15:41

本文关键词：TI蜗杆传动机构虚拟样机的设计与结构模态分析　出处：《合肥工业大学》2013年硕士论文　论文类型：学位论文

【摘要】：渐开面一次包络环面蜗杆传动简称一次包络TI蜗杆传动,是由渐开线斜齿圆柱齿轮及其包络的环面蜗杆组成。TI蜗杆传动具有传动效率高、承载能力大等特点,是一种很有前景的传动形式。本文主要是围绕TI蜗杆传动机构,对其一次包络啮合理论、精确的三维模型、动力学仿真分析及结构的模态分析进行了研究。主要的研究内容如下：首先,根据齿轮啮合理论,推导TI蜗杆的齿面方程,建立了TI蜗杆传动的数学模型。其次,由于TI蜗杆齿廓曲面的复杂性,传统软件对其进行直接的精确建模有很大的难度,所以本文在总结前人的基础上,提出了一种基于UG的TI蜗杆建模方法。运用UG/Open GRIP语言和UG中各种布尔操作命令相结合的方法精确的建立了TI蜗杆和渐开线斜齿轮的实体模型并完成了TI蜗杆传动机构的装配模型。这种建模方法避免了多种软件交叉使用而带来的软件接口问题,且在建模过程中最大限度的实现了参数化设计,极大地方便了模型的修改。再次,在ADAMS中建立TI蜗杆传动机构的虚拟样机模型并进行动力学仿真分析,通过输入主动件蜗杆的运动规律,得到了从动件斜齿轮轴转速以及蜗杆蜗轮啮合力的变化规律。利用虚拟样机技术,能够尽早的发现模型中存在的问题,并为物理样机的制造提供一定的依据,可以缩短产品研发周期,降低研发成本。最后,根据振动理论,在ANSYS经典环境中分别对TI蜗杆和渐开线斜齿轮进行了结构模态分析。计算模态获得的动态特性参数,可以为系统的故障诊断提供可靠的依据,同时也可为系统的动态响应计算和分析奠定基础。
[Abstract]:Involute enveloping hourglass worm gearing as a enveloping TI worm gearing, is composed of a worm involute helical gear and its envelope composed of.TI worm drive with high transmission efficiency, big carrying capacity, is a kind of transmission form very promising. This paper is mainly about TI worm gearing, the the enveloping theory, accurate 3D model, modal analysis and structural dynamic simulation are studied. The main contents are as follows:
First of all, according to the theory of gear meshing, tooth surface equations of TI worm, established the mathematical model of TI worm drive.
Secondly, because of the complexity of TI worm tooth surface, the traditional software is very difficult to be accurately modeled directly, so this paper based on the previous studies, proposes a TI worm modeling method based on UG. Using the UG/Open GRIP language and UG in Boolean operation combined with a precise command the physical model of TI worm and helical involute gear and completed assembly model of TI worm gearing. This modeling method avoids the software cross caused by software interface problem, and in the modeling process to maximize the realization of the parametric design, which greatly facilitates the modification of the model.
Again, the establishment of a virtual prototype model of TI worm drive mechanism in ADAMS and dynamic simulation analysis, through the movement of the input active worm, obtains the variation law of follower bevel gear shaft speed and worm gear meshing force. By using virtual prototype technology, can be found as soon as the model problem, and manufacturing to provide a basis for physical prototype, can shorten the product development cycle, reduce development costs.
Finally, according to the theory of vibration, the classic ANSYS environment of TI worm and helical involute gear by modal analysis. The dynamic characteristic parameters of the modal calculation, can provide a reliable basis for fault diagnosis system, as well as the dynamic response of the system is calculated and analyzed to lay the foundation.

【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH132.44

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