scholarly journals Development of Micro-EDM using Magnetic Levitation Actuator

2006 ◽  
Vol 72 (6) ◽  
pp. 730-734 ◽  
Author(s):  
Takayuki NAKAGAWA ◽  
Hidetaka MIYAKE ◽  
Yoshihito IMAI ◽  
Hitoshi TOKURA
Keyword(s):  
Magnetic Levitation ◽  
Micro Edm

scholarly journals Development of Micro-EDM using Magnetic Levitation Actuator

2006 ◽  
Vol 72 (6) ◽  
pp. 677-680 ◽  
Author(s):  
Takayuki NAKAGAWA ◽  
Hidetaka MIYAKE ◽  
Yoshihito IMAI ◽  
Hitoshi TOKURA
Keyword(s):  
Magnetic Levitation ◽  
Micro Edm

Research of Drives of Power Amplifiers of Magnetic Levitation Servo Spindle Applied to Micro EDM Based on FPGA

2014 ◽  
Vol 621 ◽  
pp. 564-569
Author(s):  
Yong Feng Guo ◽  
Song Luo ◽  
Ze Bin Ling ◽  
Xiao You Zhang
Keyword(s):  
Phase Shift ◽  
Power Amplifier ◽  
Power Amplifiers ◽  
Magnetic Levitation ◽  
Dead Zone ◽  
Micro Edm ◽  
Motor Power ◽  
Coil Current ◽  
Switch Power ◽  
Spindle Power

The drives of power amplifiers of magnetic levitation servo spindle applied to micro EDM (Electron discharge machining) based on FPGA (Field programmable gate array) are developed. The drive module that produces the PWM (Pulse width modulation) waves that conform to the requirements of spindle power amplifiers involving three-level half bridge switch power amplifier, three-level full bridge switch power amplifier and motor power amplifier, according to input of action values from magnetic levitation servo spindle controller DSP (Digital signal processor) is designed. Multi-PWM producing algorithm by single timer with multi comparing nodes is proposed. After being applied to control system of magnetic levitation servo spindle, the drives accomplish conversion from DSP action values to PWM waves. The PWMs that drive radial coil current power amplifier have phase difference of 180°. The PWMs that drive axial coil current power amplifier have dead zone time and their wave shapes are complementary. The PWMs that drive the motor power amplifier conform to requirements of power amplifier chip LMD18200. Using FPGA to realize the drive function of spindle power amplifier makes the drive design more flexible, resource distribution of DSP more optimized, the task of algorithms running more centralized, and the drives module gets simpler and more reliable because the phase shift circuit and dead zone circuit are cancelled but the function of phase shift and dead zone is reserved.

A Micro Conveyance Actuator based on Superconducting Magnetic Levitation

1999 ◽  
Vol 119 (8-9) ◽  
pp. 417-423 ◽  
Author(s):  
Iizuka Tetsuhiko ◽  
Fujita Hiroyuki
Keyword(s):  
Magnetic Levitation

The Application of Powder Suspended Dielectric Fluid in Micro-EDM Processes to Reduce Machining Time

2009 ◽  
Vol 1 (3) ◽  
pp. 210-213 ◽  
Author(s):  
Gunawan Prihandana ◽  
Muslim Mahardika ◽  
M. Hamdi ◽  
Kimiyuki Mitsui
Keyword(s):  
Dielectric Fluid ◽  
Micro Edm ◽  
Machining Time

Recent Patents on Micro-EDM Milling

2020 ◽  
Vol 13 (3) ◽  
pp. 219-229
Author(s):  
Baocheng Xie ◽  
Jianguo Liu ◽  
Yongqiu Chen
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Three Dimensional ◽  
Processing Method ◽  
Electrode Wear ◽  
Micro Edm ◽  
Processing Efficiency ◽  
Processing Methods ◽  
Machining Quality ◽  
Micro Electrical Discharge Machining

Background: Micro-Electrical Discharge Machining (EDM) milling is widely used in the processing of complex cavities and micro-three-dimensional structures, which is a more effective processing method for micro-precision parts. Thus, more attention has been paid on the micro-EDM milling. Objective : To meet the increasing requirement of machining quality and machining efficiency of micro- EDM milling, the processing devices and processing methods of micro-EDM milling are being improved continuously. Methods: This paper reviews various current representative patents related to the processing devices and processing methods of micro-EDM milling. Results: Through summarizing a large number of patents about processing devices and processing methods of micro-EDM milling, the main problems of current development, such as the strategy of electrode wear compensation and the development trends of processing devices and processing methods of micro-EDM milling are discussed. Conclusion: The optimization of processing devices and processing methods of micro-EDM milling are conducive to solving the problems of processing efficiency and quality. More relevant patents will be invented in the future.

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