摘要
在分析了几种微小异形孔加工方法的前提下,介绍了采用微细超声电火花加工方法进行微小异形孔的加工。重点研究了微细超声电火花加工系统的关键技术,通过理论分析与大量实验证明了超声振动对于提高微小异形孔电火花加工效率以及加工精度具有显著效果。此外,首次提出了异形孔"等效放电面积"的概念,对等效放电面积进行了数学推理、计算,并在此基础上进行了大量的实验研究。实验证明,异形孔等效放电面积的提出为选择异形孔加工规准提供了可靠的理论与实践依据。根据对异形孔等效放电面积的计算用以选择加工规准,可以最大限度地提高微小异形孔的加工效率及精度。
After analyzing several machining methods of the shaped holes the micro ultrasonic EDM is presented. The key technologies of micro ultrasonic EDM system are intensively studied. The theoretical analysis and the experiments show that the ultrasonic vibration has an obvious effect on increasing the efficiency and accuracy of EDM of shaped micro holes. In addition, the idea of 'equivalent machining area' is brought forward first and many experiments have been done based on the mathematical inference and calculation for it. The experiments show that the idea provides the reliable theoretical and practical foundation for selecting the machining guiding rule of shaped micro holes. The machining efficiency and accuracy of shaped holes could be maximumly increased when selecting the machining guiding rule according to the calculation of the equivalent machining area.
出处
《微细加工技术》
2003年第1期44-50,共7页
Microfabrication Technology
基金
国家自然科学基金重点资助项目(59935110)
