第22卷第7期 2014年7月
文章编号
1004-924X(2014)07-1828-06
光学精密工程
Optics and Precision Engineering
压电驱动式振动给料器的设计与试验
沈燕虎1，苏江1.2，杨志刚"，刘勇*
（1.吉林大学机械科学与工程学院，吉林长春130022： 2.吉林大学珠海学院机电工程系，广东珠海519041)
Vol. 22No. 7
Jul.2014
摘要：为了实现对轻、薄、小产晶的平稳输送，利用圆形压电双品片作为振动给料器的动力源，乙型弹簧片作为主振弹簧，并基于系统共振方法设计了新型压电驱动式报动给料器。介绍了圆形压电双晶片驱动式摄动给料器的工作原理，建立了动力学模型，获得了系统固有额率表达式：分析了压电双品片的报动模态，确定了一阶报型为工作振型。研制了振动给料器样机，利用样机测试了电压，频率与送料速度的特性曲线以及主振弹黄片角度对送料速度、送料稳定性、送料噪声的影响规律。试验结果表明；电压为150V，频率为142Hz时，输送电池幅的速度为8.5batterycap/s；频率为136～148 Hz时，系统具备输送物料的能力，共振条件下(142Hz)输送速度最快；随着电压的升高，输送速度呈线性增加：输送的单体物料质量增加时，主振弹簧片安装角度宜变小。
关键词：压电驱动；振动给料器：压电双晶片：力学模型：模态分析
中图分类号：TH237.1;TN384
文献标识码：A
doi:10. 3788/OPE. 20142207, 1828
Design and experiment of piezoelectric-drive vibratory feeder
SHEN Yan-hu',SU Jiang'-2,YANG Zhi-gang',LIU Yong
(1.Schoolof Mechanical Scienceand Engineering,JilinUniversity,Changchun130022,China;
2.Department of Mechanical and Electrical Engineering ZhuhaiSchool，JilinUniversity,Zhuhai519041,China)*Correspondingauthor,E-mail:yongliu@jlu.edu.cn
Abstract: To convey light, thin and small products stably, a piezoelectric vibratory feeder with the Z leaf spring actuated by a round piezoelectric bimorph was developed base on the working principle of systemic resonance. The working principles of the vibratory feeder driven by a circular piezoelectric vibrator were introduced, the expression of natural frequency was obtained by establishing the dynamic model of the vibratory feeder, and the first order mode shape was defined as the working mode shape after analysis of the vibratory modal. Then, a prototype of the vibratory feeder was developed. Finally, the relations among voltage, frequency and feeding rate were measured, and the influences of the angle of leaf spring on feeding rates , stability and noise were explored. The experimental results show that the feeding rate of the vibratory feeder is 8.-5 battery caps per second when the voltage is 15o V and the frequency is 142 Hz. The vibratory feeder can convey the products when the working frequency is from 136 Hz to 148 Hz, and the best feeding rate is at the resonance
收稿日期：2014-01-20；修订日期：2014-02-25
基金项目：国家自然科学基金资助项目（No.51075175）