High-speed near dry electrical discharge machining

2016 ◽  
Vol 233 ◽  
pp. 9-18 ◽  
Author(s):  
Yang Shen ◽  
Yonghong Liu ◽  
Wanyun Sun ◽  
Yanzhen Zhang ◽  
Hang Dong ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
High Speed ◽  
Electrical Discharge Machining ◽  
Dry Electrical Discharge Machining

High-speed dry electrical discharge machining

2015 ◽  
Vol 93 ◽  
pp. 19-25 ◽  
Author(s):  
Yang Shen ◽  
Yonghong Liu ◽  
Yanzhen Zhang ◽  
Hang Dong ◽  
Wanyun Sun ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
High Speed ◽  
Electrical Discharge Machining ◽  
Dry Electrical Discharge Machining

Analysis of dry electrical discharge machining in different dielectric mediums

2015 ◽  
Vol 231 (3) ◽  
pp. 497-512 ◽  
Author(s):  
Saman Fattahi ◽  
Hamid Baseri
Keyword(s):  
Electrical Discharge ◽  
High Speed ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
High Speed Steel ◽  
Workpiece Material ◽  
Machined Surface ◽  
Dry Edm ◽  
Pulse On Time ◽  
Dry Electrical Discharge Machining

Dry electrical discharge machining (EDM) is a modification of the oil EDM process in which the liquid dielectric is replaced by a gaseous dielectric. This study investigates the effects of different types of gas (air, nitrogen, and mixture of argon/air) on the machining characteristics of dry EDM of M35 workpiece material. A Taguchi L27 orthogonal array design was applied to investigate the effects of six control factors, including current, pulse on-time, duty factor, gas pressure, electrode rotational speed and specifically type of gas on machining responses, including material removal rate (MRR), surface roughness, and radial overcut. Also, the surface integrity was investigated in different dielectric mediums. Results show that the argon/air mixture can improve the MRR with respect to air and nitrogen. The best dimensional accuracy can be obtained by using nitrogen as the dielectric medium. Also, the machined surface with nitrogen has the fewest small drops and the microcracks in Aagon/air mixture is more than those air one. So, the argon/air mixture is the best dielectric with respect to nitrogen and air mediums for dry EDM of high-speed steel M35.

Development of a novel 5-DOF controlled maglev local actuator for high-speed electrical discharge machining

2010 ◽  
Vol 34 (3) ◽  
pp. 453-460 ◽  
Author(s):  
Dongjue He ◽  
Hiroki Morita ◽  
Xiaoyou Zhang ◽  
Tadahiko Shinshi ◽  
Takayuki Nakagawa ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
High Speed ◽  
Electrical Discharge Machining

A Magnetic Drive Actuator for Micro Electrical Discharge Machining

2012 ◽  
Vol 591-593 ◽  
pp. 303-306
Author(s):  
Xiao You Zhang ◽  
Akio Kifuji ◽  
Dong Jue He
Keyword(s):  
Electrical Discharge ◽  
High Speed ◽  
Degrees Of Freedom ◽  
Electrical Discharge Machining ◽  
Magnetic Coupling ◽  
Magnetic Bearings ◽  
Coupling Mechanism ◽  
Micro Electrical Discharge Machining ◽  
Long Stroke ◽  
Magnetic Drive

Electrical discharge machining has the capability of machining all conductive materials regardless of hardness, and has the ability to deal with complex shapes. However, the speed and accuracy of conventional EDM are limited by probability and efficiency of the electrical discharges. This paper describes a three degrees of freedom (3-DOF) controlled, wide-bandwidth, high-precision, long-stroke magnetic drive actuator. The actuator can be attached to conventional electrical discharge machines to realize a high-speed and high-accuracy EDM. The actuator primarily consists of thrust and radial magnetic bearings, thrust and radial air bearings and a magnetic coupling mechanism. By using the thrust and radial magnetic bearings, the translational motions of the spindle can be controlled. The magnetic drive actuator possesses a positioning resolution of the order of micrometer, a bandwidth greater than 100Hz and a positioning stroke of 2mm.

scholarly journals High-speed Electrical Discharge Machining with a 5-DOF Controlled Maglev Actuator

2007 ◽  
Vol 2007.4 (0) ◽  
pp. 7D411
Author(s):  
Xiaoyou ZHANG ◽  
Tadahiko SHINSHI ◽  
Akira SHIMOKOHBE ◽  
Yoshihito IMAI ◽  
Hidetaka MIYAKE ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
High Speed ◽  
Electrical Discharge Machining
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