金刚石拉丝模超声加工自动频率跟踪系统设计  

Development of Automatic Frequency Tracking Power Supply System for Diamond Drawing Dies Ultrasonic Processing

作　　者：秦玉成[1,2] 王瑞雪[1,2] 叶正生[1,2] 刘在润 

机构地区：[1]北京市电加工研究所,北京100191 [2]北京迪蒙特佳工模具技术有限公司,北京102206

出　　处：《电加工与模具》2015年第5期48-51,共4页Electromachining & Mould

基　　金：北京市科学技术研究院青年骨干计划资助项目(2012-022)

摘　　要：在分析金刚石拉丝模超声加工原理的基础上,讨论了超声频率自动跟踪的必要性,提出了基于模拟锁相环技术的频率跟踪电源系统的设计。通过外围硬件电路检测辨别换能器两端电压和电流信号的相位差方向,控制CD4046锁相环输出频率的大小,使换能器的工作频率始终在谐振频率点。在加载不同长度工具针负载的情况下,对自动跟踪电源系统进行压电阻抗分析测试,实验结果表明,该系统具有良好的频率跟踪性能。Based on the ultrasonic processing mechanism of diamond drawing dies ,the necessities of the frequency automatic tracking power supply for ultrasonic processing were studied. And the power supply system of frequency automatic tracking based on the simulation phase-locked loop technique was designed. Through the peripheral hardware circuit ,the difference of voltage-current phase on both ends of the transducer were identifies. The output frequencies of phase-locked loop CD4046 were controlled,which can make the work frequency points. Under the condition impedance analysis tests were carried o system has good tracking performance. frequency of the transducer is always same at the resonance of loading the different length of needle tool,the piezoelectric ut on automatic tracking power system. The result shows that the

关 键 词：金刚石拉丝模 超声加工 频率自动跟踪 压电阻抗分析 

分 类 号：TG663[金属学及工艺—金属切削加工及机床]