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International Journal of Electrical Machining最新文献

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Reaction Forces Observed in Pulse Discharges of EDM 电火花加工脉冲放电中反作用力的观察
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.8.51
M. Kunieda, Mariko Tohi, Y. Ohsako
{"title":"Reaction Forces Observed in Pulse Discharges of EDM","authors":"M. Kunieda, Mariko Tohi, Y. Ohsako","doi":"10.2526/ijem.8.51","DOIUrl":"https://doi.org/10.2526/ijem.8.51","url":null,"abstract":"This paper describes the measurement of process reaction force generated in EDM using the Split Hopkinson Bar method. Using this method, the correct waveform of the reaction force was obtained without being influenced by the natural frequency of the measuring system. The influences of the dielectric fluid and discharge position on the reaction force were investigated. Based on the measurement of the reaction force caused by two consecutive pulse discharges, the reaction force applied to the tool electrode in the actual EDM process is discussed.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124236313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 26
Investigation of Depth-dependent Characteristics in Micro EDM Drilling Based on Direct Inter-electrode Area Observation 基于直接电极间面积观测的微细电火花钻孔深度依赖特性研究
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.24.33
Guodong Li, W. Natsu, Zuyuan Yu
{"title":"Investigation of Depth-dependent Characteristics in Micro EDM Drilling Based on Direct Inter-electrode Area Observation","authors":"Guodong Li, W. Natsu, Zuyuan Yu","doi":"10.2526/ijem.24.33","DOIUrl":"https://doi.org/10.2526/ijem.24.33","url":null,"abstract":"In the EDM process of drilling deep blind micro-hole with an aspect ratio larger than 10, machining speed decreases significantly in the last stage of machining due to frequent retreat of the micro tool. Up to now, reasons for the speed decrease were mostly thought to be gradual deterioration of the machining environment in the inter-electrode area, mainly caused by debris accumulation and concentration in the narrow gap area. However, it is difficult to confirm the state of the gap area in micro scale by direct observation. Therefore, an affirmed explanation for the speed decrease in micro EDM drilling has not been reported. In this research, in order to analyze the behaviors of bubble, debris and discharge characteristic in the inter-electrode area and the reason for speed decrease, direct observation of the gap area was carried out with an originally designed sandwich workpiece and a high-speed camera. The characteristics of discharge, bubble behavior and change of discharge area have been investigated and discussed in different hole depths.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123456961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Study of precision micro-Electro-Discharge Machining (1st Report)-Examination the effect of RC circuit components on minimization material removal per discharge- 精密微电火花加工的研究(第一报告)- RC电路元件对每次放电材料去除最小化的影响的检验-
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/JSEME.43.82
T. Masaki, T. Kuriyagawa
{"title":"Study of precision micro-Electro-Discharge Machining (1st Report)-Examination the effect of RC circuit components on minimization material removal per discharge-","authors":"T. Masaki, T. Kuriyagawa","doi":"10.2526/JSEME.43.82","DOIUrl":"https://doi.org/10.2526/JSEME.43.82","url":null,"abstract":"In this paper, we describe the results of our study of precision micro-Electro-Discharge Machining. Micro-EDM had been developed and mainly used for making holes in nozzle plates within the inkjet printer field. Smaller-diameter hole boring and burr minimization are required in the manufacture of aperture disks for electron beam equipment such as SEM and FIB. Specifically, this study focuses on the measurement of the floating stray capacitance of a relaxation pulse-type electro- discharge generator, the investigation of the effect of the waveform of pulse discharged current, and the resulting surface roughness of the machined area as they relate to each element of the discharge circuit including the pulse generator and equipment. Additionally, it is confirmed that the use of a low gap voltage achieves a smoother surface finish. This is the result of the diameter of each single crater generated on the surface by a single pulse discharge being smaller than 1.2μm, which is 50% smaller than that for conventional micro-EDM equipment.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126268558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Tilting Jet Flushing Nozzle on Wire EDM Performance 倾斜射流冲洗喷嘴对线材电火花加工性能的影响
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/IJEM.20.3
T. Konishi, A. Okada, Y. Okamoto, Haruki Kurihara
{"title":"Effect of Tilting Jet Flushing Nozzle on Wire EDM Performance","authors":"T. Konishi, A. Okada, Y. Okamoto, Haruki Kurihara","doi":"10.2526/IJEM.20.3","DOIUrl":"https://doi.org/10.2526/IJEM.20.3","url":null,"abstract":"Debris exclusion from the wire EDM gap has been conventionally done by jet flushing using nozzles but the debris stagnation area always presents near the wire with the conventional method. In this study, a new flushing method using tilting nozzle to wire running direction to reduce the debris stagnation in the kerf was proposed on the base of simulation results by computational fluid dynamics (CFD) analysis. The simulations and experiments clarified that the tilting jet flushing nozzle could decrease the debris stagnation area in the kerf and leads to smoother debris exclusion, resulting in higher removal rate. Furthermore, the wire deflection caused by hydrodynamic force due to the jet flushing was calculated by a structural analysis using the distributions of pressure acting on the wire surface by jet flushing flow obtained by the CFD analysis.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121121330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New Products and New Application of 3R System 3R系统的新产品与新应用
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.12.45
Koichi Saito
{"title":"New Products and New Application of 3R System","authors":"Koichi Saito","doi":"10.2526/ijem.12.45","DOIUrl":"https://doi.org/10.2526/ijem.12.45","url":null,"abstract":"New products for Sinker/Wire EDM, Rotating Spindle and B-Axis were launched at JIMTOF 2006 which extend application range ofEDM. Delphin also extends application range of EDM and reduces setting up time of big electrode and piece, and standardizes the operation.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115068369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation of Die-Sinking EDM by Discharge Location Searching Algorithm 基于放电位置搜索算法的冲模电火花加工仿真
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.3.79
M. Kunieda, M. Kiyohara
{"title":"Simulation of Die-Sinking EDM by Discharge Location Searching Algorithm","authors":"M. Kunieda, M. Kiyohara","doi":"10.2526/ijem.3.79","DOIUrl":"https://doi.org/10.2526/ijem.3.79","url":null,"abstract":"This paper deals with simulation of workpiece geometry eroded by a die-sinking EDM using a newly developed simulation algorithm for faithful imitation of the actual phenomena which are occurring in the gap. The algorithm is a simple repetition of the procedure which is comprised of: (1) determining the next discharge location where the dielectric breakdown strength is lowest, (2) removing the tool and workpiece electrodes, (3) distributing the debris particles, and (4) feeding the tool electrode. The simulation takes into account a variety of influential factors such as tool electrode wear, gap width distribution, curvature and inclination of the tool electrode, and debris particle concentration, all of which affect each other in a very complex manner. The simulation results for the geometries of the tool electrode and the workpiece after machining and for the gap width distribution agree well with the experimental results for machining of a flat and square surface.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133440187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 28
Highly-Accurate Machining by Linear Motor Drive Wire EDM 直线电机驱动电火花线切割高精度加工
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.7.1
M. Sugai
{"title":"Highly-Accurate Machining by Linear Motor Drive Wire EDM","authors":"M. Sugai","doi":"10.2526/ijem.7.1","DOIUrl":"https://doi.org/10.2526/ijem.7.1","url":null,"abstract":"","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114072331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
In-Process Truing/Dressing of Grinding Wheels by WEDG and ELID 用WEDG和ELID对砂轮进行加工/修整
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.3.59
N. Nebashi, K. Wakabayashi, M. Yamada, T. Masuzawa
{"title":"In-Process Truing/Dressing of Grinding Wheels by WEDG and ELID","authors":"N. Nebashi, K. Wakabayashi, M. Yamada, T. Masuzawa","doi":"10.2526/ijem.3.59","DOIUrl":"https://doi.org/10.2526/ijem.3.59","url":null,"abstract":"This paper proposes a novel in-process truing method by employing Wire Electrodischarge Grinding (WEDG) and describes its experimental results. This method is incorporated with electrolytic in-process dressing (ELID) and is implemented on a precision grinding machine. As a result, surface roughness could be maintained at less than 0.51lm ·Ry, and form accuracy could be maintained at approximately 0.7Ilm.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"46 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114101175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Simulation on Influence of Electrostatic Force on Machining Characteristics in WEDM 电火花线切割中静电力对加工特性影响的仿真研究
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.7.31
Fuzhu Han, M. Kunieda, Tomoko Sendai, Y. Imai
{"title":"Simulation on Influence of Electrostatic Force on Machining Characteristics in WEDM","authors":"Fuzhu Han, M. Kunieda, Tomoko Sendai, Y. Imai","doi":"10.2526/ijem.7.31","DOIUrl":"https://doi.org/10.2526/ijem.7.31","url":null,"abstract":"This paper describes a simulation of the influence of electrostatic force on machining characteristics in Wire Electrical Discharge Machining (WEDM). The simulation is composed of the discharge location searching algorithm and analysis of the wire vibration. The simulation confirmed that the wire electrode can be resonated by the electrostatic force, when the discharge frequency is the same as the characteristic frequency of the wire electrode. When the wire was vibrated in mode 3, wire vibration patterns were copied to the workpiece surface in both the experiment and simulation, indicating that the resonance of the wire can decrease machining accuracy. In this study we also found that if the voltage of the open circuit is set high, the wire collides with the workpiece at a high frequency due to the electrostatic force, causing the wire to break easily.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115060664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
The Development Status and Analysis of Wire EDM in China 中国线材电火花加工的发展现状及分析
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.6.1
Cao Fengguo, Feng Xiaoguang
{"title":"The Development Status and Analysis of Wire EDM in China","authors":"Cao Fengguo, Feng Xiaoguang","doi":"10.2526/ijem.6.1","DOIUrl":"https://doi.org/10.2526/ijem.6.1","url":null,"abstract":"The development status of wire electric discharge machining (Wire EDM) in China, in combination with its technical features, is generally summarized and its way of development is pointed out hereinafter in this paper.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132183338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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