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International Journal of Electrical Machining最新文献

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Planetary EDM of Micro Holes 微孔行星电火花加工
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.11.15
K. Egashira, Tomoya Taniguchi, Satoshi Hanajima, H. Tsuchiya, M. Miyazaki
{"title":"Planetary EDM of Micro Holes","authors":"K. Egashira, Tomoya Taniguchi, Satoshi Hanajima, H. Tsuchiya, M. Miyazaki","doi":"10.2526/ijem.11.15","DOIUrl":"https://doi.org/10.2526/ijem.11.15","url":null,"abstract":"Moving an electrode in planetary motion is useful particularly for drilling micro holes because flushing is difficult for a thin electrode. However, there have been few reports on such research. In the present study, therefore, the planetary electrical discharge machining (EDM) of micro holes of less than 50μm in diameter has been attempted. The results of drilling copper using tungsten electrodes show that the planetary motion of the electrode improves the material removal rate and the volumetric wear ratio, reduces the overcut and enables the drilling of deep holes. Under the experimental conditions used, the material removal rate is highest with a planetary-motion diameter of approximately 25% the electrode diameter. The volumetric wear ratio can be reduced to less than 1%, which is very small for EDM using an RC circuit. A small overcut of less than 1μm is also possible, enabling high-accuracy machining.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"51 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":"127509142","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: 16
A Study on Electrochemical Gear Deburring Based on Engagement 基于啮合的电化学齿轮去毛刺研究
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.1.9
Tong Wang
{"title":"A Study on Electrochemical Gear Deburring Based on Engagement","authors":"Tong Wang","doi":"10.2526/ijem.1.9","DOIUrl":"https://doi.org/10.2526/ijem.1.9","url":null,"abstract":"This paper outlines a newly developed technology of electrochemical gear deburring ( EGD ). It utlizes the principle of dissolving burr at its root and gear engagement, and has several features as high deburring and radiusing quality, general purpose tool cathode, small stray etching zone adjacent to the teeth edge and electric energy saving.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"10 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":"124809983","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
Design by functional decomposition for a high strength EDM wire electrode 高强度电火花线材电极的功能分解设计
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.9.51
Benny Schacht, J. Kruth, B. Lauwers
{"title":"Design by functional decomposition for a high strength EDM wire electrode","authors":"Benny Schacht, J. Kruth, B. Lauwers","doi":"10.2526/ijem.9.51","DOIUrl":"https://doi.org/10.2526/ijem.9.51","url":null,"abstract":"A general EDM wire electrode can consist of four components. First of all the core of the wire, that is mostly responsible for tensile strength and electrical conductivity. On the core there can be an intermediate layer that gives extra conductivity to a high tensile but less conductive core. Then there is the coating which is intended to provide the wire with a high (economic) cutting speed. And fourth: on top of a wire a very thin superficial layer may be applied with variant purposes. The presence of all four or just some of these components depends on the intented use of the wire. This paper discusses the design and testing of two high tensile strength wires for EDM meant for accurate cutting, one with small diameter and one with large diameter. The design phase starts from this functional decomposition. The results clearly illustrate the benefits of a high strength wire electrode, i.e. a considerable raise in accuracy, especially in corner cutting.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"63 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":"125104119","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
On the publication of the International Journal of Electrical Machining 发表在《国际电气加工杂志》上
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.1.1
Yasuo Kimoto
{"title":"On the publication of the International Journal of Electrical Machining","authors":"Yasuo Kimoto","doi":"10.2526/ijem.1.1","DOIUrl":"https://doi.org/10.2526/ijem.1.1","url":null,"abstract":"","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"29 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":"126079515","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
Localized and Mask-less Copper Deposition with Free-flow Jet Micro-Electrochemical Additive Manufacturing 自由流动射流微电化学增材制造的局部无掩膜铜沉积
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.27.16
M. Arshad, K. Saxena, Rex Smith, J. Qian, D. Reynaerts
{"title":"Localized and Mask-less Copper Deposition with Free-flow Jet Micro-Electrochemical Additive Manufacturing","authors":"M. Arshad, K. Saxena, Rex Smith, J. Qian, D. Reynaerts","doi":"10.2526/ijem.27.16","DOIUrl":"https://doi.org/10.2526/ijem.27.16","url":null,"abstract":"","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":"128804662","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
Newly Developed CuW Electrode for High Performance EDM 新型高性能电火花加工用CuW电极
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.14.23
A. Okada, S. Oue, Y. Uno, T. Shoji, T. Fukushima, O. Terada
{"title":"Newly Developed CuW Electrode for High Performance EDM","authors":"A. Okada, S. Oue, Y. Uno, T. Shoji, T. Fukushima, O. Terada","doi":"10.2526/ijem.14.23","DOIUrl":"https://doi.org/10.2526/ijem.14.23","url":null,"abstract":"The conventional copper-tungsten (CuW) electrode used widely for high precision electrical discharge machining (EDM) is generally made by the melting method. However, its mixture ratio of copper to tungsten is structurally limited within a narrow range. On the other hand, the mixture ratio can readily be changed in the case of CuW made by the newly developed powder sintering method. In this study, in order to obtain a higher metal removal rate with a lower electrode wear rate, EDM characteristics for metal mold steel with the CuW electrode made by the new method were investigated with various mixture ratios. Experimental results clarified that the EDM characteristics are greatly changed by the Cu mixture ratio, and the electrode wear rate can be greatly decreased at the Cu mixture ratios of 10-20% under rough EDM conditions. It was also confirmed that much workpiece material and heat-resolved carbon adhere to the electrode surface at Cu mixture ratios of 1020%, which plays an important role in reducing electrode wear.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"30 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":"130319238","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
Effect of Bubble Coalescence on Material Removal Rate in Electrical Discharge Machining Process 电火花加工中气泡聚结对材料去除率的影响
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/IJEM.16.33
Shinya Hayakawa, S. Yamada, F. Itoigawa, Takashi Nakamura, T. Kitamura, M. Yamanaka
{"title":"Effect of Bubble Coalescence on Material Removal Rate in Electrical Discharge Machining Process","authors":"Shinya Hayakawa, S. Yamada, F. Itoigawa, Takashi Nakamura, T. Kitamura, M. Yamanaka","doi":"10.2526/IJEM.16.33","DOIUrl":"https://doi.org/10.2526/IJEM.16.33","url":null,"abstract":"This paper investigates the ease of bubble coalescence of the machining liquid and the medium at the discharge ignition location in electrical discharge machining (EDM) process in order to discuss the effect of the properties of the machining liquid on the material removal rate. Bubble coalescence, which is one of the properties of a machining liquid, was observed using a video camera, and the medium at the discharge ignition location, i.e., whether a discharge occurs in EDM oil or in bubbles, was determined using a characteristic of the waveform of the discharge current. It is found for a continuous EDM process that a high proportion of discharges occur near the boundaries of previously existing bubbles, whereas few discharges occur in the interior of bubbles. It is also found that reducing the bubble coalescence will improve the material removal rate.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"35 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":"123386435","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: 3
Synchronized Observation of Machining Phenomena and Discharge Waveform in EDM of Transparent Insulator 透明绝缘子电火花加工过程中加工现象与放电波形的同步观察
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.26.33
Ryosuke Sato, D. Hanaoka, Masahiro Yoshida
{"title":"Synchronized Observation of Machining Phenomena and Discharge Waveform in EDM of Transparent Insulator","authors":"Ryosuke Sato, D. Hanaoka, Masahiro Yoshida","doi":"10.2526/ijem.26.33","DOIUrl":"https://doi.org/10.2526/ijem.26.33","url":null,"abstract":"(cid:3) The assisting electrode method has enabled the EDM of insulating materials. However, there is a need to change the machining conditions, otherwise the stability of EDM drops. To solve this problem, it is important to clarify the mechanism of EDM for insulating materials. We built a measurement system that enables the synchronized observation of machining phenomena and the discharge waveform. The observation clarified the two facts. The main role of a long pulse discharge is to form a conductive layer on the workpiece surface. Machining of the insulating material progresses with the concentration of normal discharge in the same area after a long pulse discharge. But, when the amount of pyrolytic carbon is large, the machining accuracy will deteriorate due to concentration of the discharge generated. Thus, the discharge conditions were changed according to the amount of pyrolytic carbon generated, resulting in the improvement of the machined shape accuracy.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"66 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":"123653915","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
Micromachining of Metals Using Ultrashort Laser Pulses 利用超短激光脉冲进行金属微加工
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.4.1
Tonshoff Hans Kurt, Von Alvensleben Ferdinand, A. Ostendorf, G. Kamlage, S. Nolte
{"title":"Micromachining of Metals Using Ultrashort Laser Pulses","authors":"Tonshoff Hans Kurt, Von Alvensleben Ferdinand, A. Ostendorf, G. Kamlage, S. Nolte","doi":"10.2526/ijem.4.1","DOIUrl":"https://doi.org/10.2526/ijem.4.1","url":null,"abstract":"This paper will discuss the potential of ultrashort pulse laser sources for micromachining applications of metals. It will be demonstrated that by using ultrashort pulse lasers very high precision, comparable to those of EDM or other micromachining technique, is achievable. The application of this novel laser micromachining technology significantly improves the efficiency of the ablation process reducing processing times. The pulse duration requirements for meltingand burr-free ablation of metals will also be discussed. Some examples of microstructures in different metals will be shown.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"63 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":"121201390","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: 25
Analysis of Explosive Load on Wire Surface Generated by Discharge of Wire EDM 电火花放电对线材表面产生的爆炸载荷分析
International Journal of Electrical Machining Pub Date : 1900-01-01 DOI: 10.2526/ijem.7.37
H. Obara, M. Nakase, T. Ohsumi, M. Hatano
{"title":"Analysis of Explosive Load on Wire Surface Generated by Discharge of Wire EDM","authors":"H. Obara, M. Nakase, T. Ohsumi, M. Hatano","doi":"10.2526/ijem.7.37","DOIUrl":"https://doi.org/10.2526/ijem.7.37","url":null,"abstract":"In this study, the explosive load acting on a wire surface generated by discharges at the rough cut and the finish cut of wire EDM is investigated. The hydrodynamic explosion process in the water-filled gap from each discharge is numerically analyzed using the adiabatic bubble expansion model, and the impulsive load acting on the wire surface is calculated. The distribution formula of the discharge number on the wire surface is derived and the total load acting on the wire generated by continuous discharges is estimated. The analyzed results are compared with the experimental results and also with those derived from the simple model, assuming that the impulsive load of each discharge is constant and acts normally on the wire surface. Results show that the influence of the skimmed depth on the wire deflection at the finish cut is explained by the numerically analyz.ed results but not by those of the simple modeL","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":"121434536","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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