508 Fundamental Study on Manufacturing of Micro-structures by Electrical Discharge Machining

2009 ◽  
Vol 2009 (0) ◽  
pp. 133-134
Author(s):  
Masakatsu KOMATSUZAKI ◽  
Jun SHIMIZU ◽  
Libo ZHOU ◽  
Takeyuki YAMAMOTO
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Fundamental Study ◽  
Micro Structures

Fundamental Study on Addition of Osteoconductivity to Titanium Alloy Surface by EDM

2017 ◽  
Vol 11 (6) ◽  
pp. 869-877 ◽  
Author(s):  
Togo Shinonaga ◽  
◽  
Yuta Iida ◽  
Ryota Toshimitsu ◽  
Akira Okada
Keyword(s):  
Rheumatoid Arthritis ◽  
Titanium Alloy ◽  
Bone Tissue ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Alloy Surface ◽  
Artificial Joint ◽  
Joint Function ◽  
Fundamental Study ◽  
Joint Shape

In recent years, one common cure for losses in joint function caused by osteoarthritis or rheumatoid arthritis is replacement with an artificial joint. For this reason, it is necessary to add osteoconductivity to artificial joint component surfaces that make contact with bone, thereby reducing the period of time necessary to fixate the bone tissue and the artificial joint component. With the intent of efficiently machining the joint shape by electrical discharge machining (EDM) and simultaneously formation of a surface with osteoconductivity, this study discusses the possibility of adding osteoconductivity to a titanium EDMed surface.

Fundamental Study on Hole Fabrication Inside a Hole by Means of Electrical Discharge Machining

2014 ◽  
Vol 8 (5) ◽  
pp. 773-782 ◽  
Author(s):  
Tohru Ishida ◽  
◽  
Yuichi Okahara ◽  
Masahiko Kita ◽  
Akira Mizobuchi ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
Degrees Of Freedom ◽  
Electrical Discharge Machining ◽  
Simple Device ◽  
Fundamental Study ◽  
Hydraulic Equipment ◽  
Inside Wall

It is necessary to machine holes of complicated shapes for building pipelines of pneumatic or hydraulic equipment. However, the degrees of freedom of machinable hole shapes are limited, because holes are usually fabricated by drilling. To improve the degrees of freedom of these shapes, the authors have devised a method of fabricating a hole on the inside wall of another hole by means of electrical discharge machining. The method employs a very simple device. The results of the fundamental experiments indicate that this method has the ability to machine such a hole.

C015 Fundamental Study on Hole Fabrication inside a Hole by Means of Electrical Discharge Machining

2013 ◽  
Vol 2013.7 (0) ◽  
pp. 373-376
Author(s):  
Tohru ISHIDA ◽  
Yuichi OKAHARA ◽  
Masahiko KITA ◽  
Akira MIZOBUCHI ◽  
Keiichi NAKAMOTO ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Fundamental Study

Investigation on the Micro-Structures and Properties of the P20 Steel Surface after Electrical Discharge Machining

2014 ◽  
Vol 789 ◽  
pp. 391-395 ◽  
Author(s):  
Xiao Liang Zhang ◽  
Zhao Xi Wang ◽  
Jun Liang ◽  
Hui Ji Shi ◽  
Yu. G. Matvienko
Keyword(s):  
Base Metal ◽  
Electrical Discharge ◽  
Pulse Current ◽  
Electrical Discharge Machining ◽  
Specimen Surface ◽  
Material Surface ◽  
Structure And Properties ◽  
Molten Layer ◽  
Structures And Properties ◽  
Micro Structures

Electrical Discharge Machining (EDM) is the machining technique of discharging corrosion of the material surface. The effect of the EDM pulse current on the micro structure and properties of the P20 specimen surface were investigated. Three layers were observed on the specimen surface after discharging: ablation layer, molten layer and recrystallized layer. The experimental results show that with the increment of the pulse current, the thickness of the molten layer and recrystallized layer increased. The contents of the oxygen and carbon on the outside of the molten layer were higher than the base metal for the diffusion during the machining. The micro hardness reduced from the out layer to the base metal after the heat treatment, indicating the mechanical properties changing of the machining surface. In the molten layer, micro fracture is caused by the residual thermal stress during the machining.

3D Milling by Micro Electrical Discharge Machining

2010 ◽  
Vol 659 ◽  
pp. 467-470
Author(s):  
Balázs Zsolt Farkas ◽  
Márton Takács
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Research Work ◽  
Milling Process ◽  
Physical Principle ◽  
Micro Milling ◽  
Micro Machining ◽  
Research Activity ◽  
Micro Electrical Discharge Machining ◽  
Micro Structures

One of the most important tasks of the manufacturing engineering of our accelerated world is giving suitable answer to the ever growing demand on miniaturization arising on every field of the industry. Our institute has been carried out theoretical and experimental research work on micro machining since 10 years. Micro machining can be defined as formation of structures smaller than 1 mm. Our previous research activity focused primarily on micro milling process carried out by carbide end mill. Milling offers the most various machining method among the chip removal processes. Investigation of formation of micro structures by electrical discharge machining (EDM) is a perfect continuance of the research work. A process similar to micro milling can be realized by the lateral moving of the miniature cylindrical electrode of an EDM machine, just the physical principle of material removing is different. This paper introduces the latest results of our research work, including

Study on Micro Reversible Electrical Discharge Machining Method for the Fabrication of Micro Structures

2009 ◽  
Vol 626-627 ◽  
pp. 279-284 ◽  
Author(s):  
Zi Long Peng ◽  
Zhen Long Wang ◽  
Yu Kui Wang ◽  
Ying Huai Dong ◽  
H. Chen
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Deposition Process ◽  
Machining Process ◽  
Micro Electrical Discharge Machining ◽  
Steel Material ◽  
Machining System ◽  
Micro Structures ◽  
Edm Process ◽  
Better Than

A reversible machining method using micro electrical discharge machining (EDM) was developed. This new method can achieve depositing or selective removing of metal material for the fabrication of micro structures. It is easy to transform the machining process from deposition to removal in one EDM machining system. In micro EDM deposition process, brass, tungsten and steel material can be deposited successfully. The deposited material has compact fine texture and combines close to workpiece. Then, micro complex structures by series deposition strategy and sub-deposition strategy were deposited. In the selective removal process, the machining effects of different working mediums were researched. Results show that the machining effect in liquid medium is better than that of in air. Finally, using the micro reversible EDM process, a micro square column with 0.070mm in side length, 0.750mm in height and a micro cylinder with 0.140mm in diameter, 1.180mm in height were fabricated.

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