Design of a Wire Transport System and Position Fluctuations of Discharge Area in Wire Electrode in WEDG

Abstract

Abstract:

Abstract： A multidegree of freedom vibration model for wire transport system was developed to analyze the effects of material and diameters of wire electrode, diameters and mass of wheels, and the length of wire electrode between two adjacent wheels on the natural frequency of the wire transport system. And the obtained conclusions through simulation analysis were used to increase the natural frequency of the wire transport system, thereby reducing the possibility of resonance and decreasing the position fluctuations of discharge area. The effects of wire running speeds, wrap angles of wire electrode on wheel guide, and wire electrode tension on the position fluctuation rang of discharge area were experimentally studied. Finally, a micro shaft with a diameter of (50±1) μm was successfully fabricated. The experimental results show that the designed wire electrical discharge grinding(WEDG) device and optimal parameters obtained through experimental study can be used to process micro shafts with high dimensional accuracy.

Key words: wire electrical discharge grinding (WEDG), wire transport system, multidegree of freedom vibration model, discharge area, micro shafts

CLC Number:

TG 661

WANG Yanqing1,2，BAI Jicheng1，ZHU Guozheng1，ZHANG Heng1. Design of a Wire Transport System and Position Fluctuations of Discharge Area in Wire Electrode in WEDG[J]. Journal of Shanghai Jiaotong University, 2015, 49(01): 23-30.

References

［1］Masuzawa T, Fujino M, Kobayashi K. Wire electrodischarge grinding for micromachining［J］. Annals of the CIRP, 1985, 34(1): 431434.

［2］Fujino M, Okamoto N, Masuzawa T. Development of multipurpose microprocessing machine［C］//Proc ISEMXI International Symposium on ElectroMachining. Lausanne: Presses Polytechniques Et Universitaires Romandes, 1995: 613620.

［3］Egashira K, Masuzawa T. Microultrasonic machining by the application of workpiece vibration［J］. Annals of the CIRP, 1999, 48(1): 131134.

［4］Sheu D Y, Cheng C C. Assembling ballended styli for CMM’s tactile probing heads on micro EDM［J］. The International Journal of Advanced Manufacturing Technology, 2013, 65(14): 485492.

［5］Sheu D Y. Multispherical probe machining by EDM Combining WEDG technology with onepulse electrodischarge ［J］. Journal of Materials Processing Technology, 2004, 149(13): 597603.

［6］Sun X Q, Masuzawa T, Fujino M. Micro ultrasonic machining and its applications in MEMS［J］. Sensors and Actuators A: Physical, 1996, 57(2): 159164.

［7］Morgan C J. Micro electrodischarge machining: techniques and procedures for micro fabrication ［D］. Lexington: University of Kentucky, 2004.

［8］Rees A, Dimov S S, Ivanov A, et al. Microelectrode discharge machining: Factors affecting the quality of electrodes produced on the machine through the process of wire electrodischarge machining［J］. Proceedings of the Institution of Mechanical Engineers. Part B: Journal of Engineering Manufacture, 2007, 221(3): 409418.

［9］Wu Y M. Automatic control for microelectrode fabrication in microEDM system ［D］. Yunlin: National Yunlin University of Science and Technology, 2001.

［10］Chang P Y. Application of taguchi methods for microelectrode fabrication automation in microEDM system ［D］. Yunlin: National Yunlin University of University of Science and Technology, 2003.

［11］Huang C S. Closed loop control for microelectrode fabrication automation ［D］. Yunlin: National Yunlin University of University of Science and Technology, 2005.

［12］pz T. Manufacturing of micro holes by using micro electric discharge machining ［D］. Ankara: Atilim University, 2008.

［13］Wang P W, Yang C S. Analysis and design of wire transport system in microwireelectronic discharge machining［J］. Journal of Micro and NanoManufacturing, 2013, 1(2): 02100610210069.第49卷第1期2015年1月上海交通大学学报JOURNAL OF SHANGHAI JIAO TONG UNIVERSITYVol.49 No.1Jan. 2015

[1]	QIU Mingbo, SHI Jingyun, YU Xiaochun, LIU Zhidong. Discharge Atomization Ablation Grinding Based on PID Pressure Servo Control [J]. Journal of Shanghai Jiao Tong University, 2019, 53(1): 111-117.
[2]	LIU Xiao1，CHEN Jipeng2，GU Lin2，CHEN Fengfan1，WANG Wei1. Combined Machining of 50%SiCp/Al Composites with Electrical-Arc-Milling and Milling-Grinding [J]. Journal of Shanghai Jiaotong University, 2018, 52(2): 222-227.
[3]	LIANG Su, ZHAO Wan-Sheng, KANG Xiao-Ming. High-Speed Jump Motion Control System for Electro-Discharge Machining Based on Programmable Multi-axis Controller [J]. Journal of Shanghai Jiaotong University, 2012, 46(09): 1476-1481.
[4]	YANG Kai, GU Lin, XUE Rong, ZHANG Fa-Wang, ZHAO Wan-Sheng. Experimental Study of MistJetting Electrical Discharge Milling [J]. Journal of Shanghai Jiaotong University, 2012, 46(07): 1021-1025.
[5]	LIANG Su, ZHAO Wan-Sheng, KANG Xiao-Ming. Development of a Five-axis CNC System for Electro-discharge Machining Based on Linux [J]. Journal of Shanghai Jiaotong University, 2012, 46(07): 1097-1102.