弧面分度凸轮机构动态分析及测试系统开发

发布时间：2018-01-02 21:24

本文关键词：弧面分度凸轮机构动态分析及测试系统开发　出处：《陕西科技大学》2016年硕士论文　论文类型：学位论文

【摘要】：弧面凸轮分度装置是由包含弧面凸轮分度机构在内的几个零件组合的单元,其作用是通过凸轮机构将输入轴的连续运动转变为输出轴的间歇运动。弧面凸轮分度装置以其运动平稳、定位准确、传动无间隙、分度精度高、高速性能好、传递扭矩大、结构紧凑、体积小、噪声低等优点,适应了机械的高速、高效、高精度、低噪声和自动化的发展趋势,被广泛应用于各种自动机械和生产线上。该装置应用前景广阔,所以其动力学研究也比较突出,但总体来看,大部分研究太过理论化,无法与实际相联系。而且其性能检测一直以来是一个薄弱的环节,特别是凸轮轮廓几何形状误差检测困难、动态检测设备缺乏、检测费用高,所以一般生产厂家不予检测。本文在机械动力学知识的基础上,建立了与实际相符的弧面分度凸轮机构动力学模型,并对其进行了详细的动力学分析,大大提高了理论分析的准确性。同时借助虚拟仪器技术,运用现代测试技术、传感器技术、计算机技术及总线技术,对弧面凸轮分度装置的动态特性测试系统进行了研究与开发,为弧面分度凸轮机构动态测试提供了理论基础和技术支持。本文主要内容如下：首先,根据机械动力学知识,建立弧面分度凸轮机构动力学模型,并对理论模型进行了分析。同时在理论模型的指导下,利用ANSYS软件和ADMAS软件,建立弧面分度凸轮机构刚柔耦合动力学模型,模拟分析弧面分度凸轮机构动态性能的影响因素。其次,在理论分析的基础上,设计弧面分度凸轮机构动态测试系统总体方案并建立数字化样机,选择合适的测试系统元器件和传感器,保证测试系统硬件方案的可行性。最后,完成测试系统人机交互界面设计,数据采集器驱动程序的设计及负载和驱动控制程序设计。完成Lab VIEW用户应用程序的设计,完成同步采集、实时保存、并在线显示多路信号；完成信号处理,可以对波形进行数字滤波、FFT、功率谱分析等多种数字信号处理。本文还详细的介绍了弧面分度凸轮机构动力学分析理论基础,软件设计基础,并特别论述了软件系统的开发过程。
[Abstract]:The globoidal cam indexing device is a unit composed of several parts including the globoidal cam indexing mechanism. Its function is to change the continuous motion of the input shaft into the intermittent motion of the output shaft through the cam mechanism. The globoidal cam indexing device is characterized by its smooth motion accurate positioning no clearance transmission high indexing accuracy and good high speed performance. The advantages of large torque transfer, compact structure, small volume and low noise are suitable for the development trend of high speed, high efficiency, high precision, low noise and automation of machinery. It is widely used in a variety of automatic machinery and production lines. This device has a broad application prospects, so its dynamics research is also more prominent, but in general, most of the research is too theoretical. And its performance detection has been a weak link, especially the cam contour geometric error detection is difficult, the lack of dynamic detection equipment, high detection costs. Based on the knowledge of mechanical dynamics, the dynamic model of globoidal indexing cam mechanism is established and analyzed in detail. It greatly improves the accuracy of theoretical analysis. At the same time, with the help of virtual instrument technology, the use of modern testing technology, sensor technology, computer technology and bus technology. The dynamic characteristic testing system of globoidal cam indexing device is studied and developed, which provides the theoretical basis and technical support for the dynamic testing of globoidal indexing cam mechanism. The main contents of this paper are as follows: firstly. According to the knowledge of mechanical dynamics, the dynamic model of globoidal indexing cam mechanism is established, and the theoretical model is analyzed. At the same time, under the guidance of theoretical model, ANSYS and ADMAS software are used. The rigid-flexible coupling dynamic model of globoidal indexing cam mechanism is established, and the factors influencing the dynamic performance of globoidal indexing cam mechanism are simulated and analyzed. Secondly, on the basis of theoretical analysis. The overall scheme of the dynamic testing system for globoidal indexing cam mechanism is designed and the digital prototype is established. The appropriate components and sensors of the test system are selected to ensure the feasibility of the hardware scheme of the test system. The user interface design of the test system, the design of the driver program of the data collector and the design of the load and drive control program, the design of the Lab VIEW user application program and the synchronous acquisition are completed. Save in real time and display multichannel signal online; After signal processing, the waveform can be processed by digital filtering, power spectrum analysis and other digital signal processing. This paper also introduces the theoretical basis of dynamic analysis of globoidal indexing cam mechanism in detail. The foundation of software design and the development process of software system are discussed in particular.
【学位授予单位】：陕西科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TH112.2;TP274

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