螺旋式压电振动给料装置的设计及动力学分析

发布时间：2018-02-26 07:18

本文关键词： 压电振子螺旋式给料器力学模型实验研究仿真分析　出处：《哈尔滨商业大学》2014年硕士论文　论文类型：学位论文

【摘要】：在产品的机械化、自动化生产过程中,振动输送装置是其中一个非常关键的环节,国外在电子产品的生产、轻工产品的包装等领域广泛使用微振动输送装置,对微振动输送装置的结构和关键技术进行研究将推动我国的电子产业、轻工业等自动化和智能化的发展。与传统的振动给料器相比,压电振动给料装置具有振幅微小、频率高、体积小、噪声低、响应快、价格低等优点,广泛用于精密振动输送领域。本文介绍了压电振动给料装置的研究意义以及国内外研究现状,在理论计算和仿真的基础上,通过对压电振动给料装置各部分的工作进行分析,对装置的各部分结构、尺寸进行设计。通过对压电基本理论的的学习,对螺旋式压电振动给料装置的压电振子进行选择,确定压电振子的振动模式和支撑方式。建立压电振动给料装置的整机模型。对微小物料在料盘上的受力情况进行分析,建立微小物料在料道上运动的微分方程。对螺旋式压电振动给料装置的工作原理进行分析,建立螺旋式压电振动给料装置的动力学模型,研究确定振动系统主要参数和工作性能的关系。利用ANSYS软件对整机进行模态分析,得出前四阶位移云图及相应的频率,通过分析比较选择符合实际振动状态的位移云图,确定压电振子的固有频率。通过对整机进行实验,得到整机的频率与输送速度关系图、电压与输送速度关系图。观察实验结果与理论计算和仿真结果是否一致。
[Abstract]:In the process of mechanization and automation of product production, vibration conveyer is one of the key links. In the field of electronic product production and light industrial product packaging, micro-vibration conveying device is widely used in foreign countries. The research on the structure and key technology of micro vibration conveyer will promote the development of automation and intelligence in electronic industry and light industry in our country. Compared with the traditional vibration feeder, piezoelectric vibration feeder has small amplitude and high frequency. Small size, low noise, fast response, low price and other advantages, widely used in the field of precision vibration transportation. This paper introduces the research significance of piezoelectric vibration feeder and the research status at home and abroad. On the basis of theoretical calculation and simulation, the work of each part of piezoelectric vibration feeder is analyzed, and the structure of each part of the device is analyzed. Through the study of piezoelectric basic theory, the piezoelectric vibrator of spiral piezoelectric vibration feeder is selected, the vibration mode and supporting mode of piezoelectric vibrator are determined, and the whole machine model of piezoelectric vibration feeding device is established. Based on the analysis of the force on the material tray, the differential equation of the movement of the small material on the material path is established. The working principle of the helical piezoelectric vibration feeder is analyzed, the dynamic model of the helical piezoelectric vibration feeder is established, and the relationship between the main parameters and the working performance of the vibration system is studied. The modal analysis of the whole machine is carried out by using ANSYS software, and the first four order displacement clouds and their corresponding frequencies are obtained. The natural frequency of the piezoelectric vibrator is determined by comparing and selecting the displacement cloud diagram in accordance with the actual vibration state. The graph of the relationship between the frequency and the conveying speed and the relationship between the voltage and the conveying speed are obtained. The experimental results are in agreement with the theoretical calculation and the simulation results.
【学位授予单位】：哈尔滨商业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH237.1

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