电加工与模具
電加工與模具
전가공여모구
Electromachining & Mould
2015年
5期
48-51
,共4页
秦玉成%王瑞雪%叶正生%刘在润
秦玉成%王瑞雪%葉正生%劉在潤
진옥성%왕서설%협정생%류재윤
金刚石拉丝模%超声加工%频率自动跟踪%压电阻抗分析
金剛石拉絲模%超聲加工%頻率自動跟蹤%壓電阻抗分析
금강석랍사모%초성가공%빈솔자동근종%압전조항분석
diamond drawing dies%ultrasonic processing%frequency automatic tracking%piezoelectric impedance analysis
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。
在分析金剛石拉絲模超聲加工原理的基礎上,討論瞭超聲頻率自動跟蹤的必要性,提齣瞭基于模擬鎖相環技術的頻率跟蹤電源繫統的設計。通過外圍硬件電路檢測辨彆換能器兩耑電壓和電流信號的相位差方嚮,控製CD4046鎖相環輸齣頻率的大小,使換能器的工作頻率始終在諧振頻率點。在加載不同長度工具針負載的情況下,對自動跟蹤電源繫統進行壓電阻抗分析測試,實驗結果錶明,該繫統具有良好的頻率跟蹤性能。
재분석금강석랍사모초성가공원리적기출상,토론료초성빈솔자동근종적필요성,제출료기우모의쇄상배기술적빈솔근종전원계통적설계。통과외위경건전로검측변별환능기량단전압화전류신호적상위차방향,공제CD4046쇄상배수출빈솔적대소,사환능기적공작빈솔시종재해진빈솔점。재가재불동장도공구침부재적정황하,대자동근종전원계통진행압전조항분석측시,실험결과표명,해계통구유량호적빈솔근종성능。
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 of the transducer is always same at the resonance frequency points. Under the condition of loading the different length of needle tool ,the piezoelectric impedance analysis tests were carried out on automatic tracking power system. The result shows that the system has good tracking performance.