{"title":"ITS Tooling System","authors":"Erowa Nippon Ltd., Shigetoshi Sakagawa","doi":"10.2526/JSEME.36.83_13","DOIUrl":"https://doi.org/10.2526/JSEME.36.83_13","url":null,"abstract":"","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132334927","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}
{"title":"Introduction of the New NC MGH Sinker Electric Discharge Machine","authors":"L. Co., Kunio Fujita","doi":"10.2526/JSEME.36.83_39","DOIUrl":"https://doi.org/10.2526/JSEME.36.83_39","url":null,"abstract":"","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133933976","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}
{"title":"Study of Surface Modification by Electrical Discharge Machining (1st Report)","authors":"M. Sano, M. Hihara, K. Yatsushiro, N. Mohri","doi":"10.2526/JSEME.36.82_25","DOIUrl":"https://doi.org/10.2526/JSEME.36.82_25","url":null,"abstract":"","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128368908","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}
Shin-ichiro Kubota, Y. Uno, H. Kuribayashi, S. Yokomizo
{"title":"Fine Deep Boring of Cemented Carbide by EDM with YAG Laser (2nd Report)","authors":"Shin-ichiro Kubota, Y. Uno, H. Kuribayashi, S. Yokomizo","doi":"10.2526/JSEME.36.82_18","DOIUrl":"https://doi.org/10.2526/JSEME.36.82_18","url":null,"abstract":"","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116682090","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}
{"title":"Development of Twin-type Resistorless Power Supply for Electrical Discharge Machining","authors":"H. Obara, T. Ohsumi, M. Hatano","doi":"10.2526/JSEME.36.82_33","DOIUrl":"https://doi.org/10.2526/JSEME.36.82_33","url":null,"abstract":"A new resistorless power supply equipped with twin generators is developed for electrical discharge machining Each generator has no resistor but has a coil, a group of transistors and diodes to restrict the discharge current The two generators are operated alternately, thus generating two triangular currents with a time lag. The two currents are summed on a tool electrode, and consequently, a smooth current is generated. This power supply has the following advantages: 1) There is no power dissipation of the resistors. 2) The required power supply is small. 3) The current wave is smooth and it is easy to generate not only a high current but also a low current for finish machining. 4) It is easy to change the current waveform and the rise time of the current, by controlling the on/off duty ratio of the transistors. The principle and tested results of this power supply are described.","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131365791","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}
{"title":"Prevention of Wire Breakage during Wire EDM (3rd Report)","authors":"H. Obara, M. Yamada, T. Ohsumi, M. Hatano","doi":"10.2526/JSEME.36.24","DOIUrl":"https://doi.org/10.2526/JSEME.36.24","url":null,"abstract":"Recently used wire EDM machines generate a triangular high peak discharge current of 500 ampere or more. It is very difficult to detect the true discharge voltage, because the discharge voltage is transformed by the influence of the high discharge current and impedance of the wire. In this study, we investigate the variation of discharge location and the discharge voltage immediately before the wire breakage in the case of high discharge current on wire EDM, in orderto predict the wire breakage. Three methods that compensate the detected discharge voltage are proposed and the investigated results using these methods are described It was found that in the case of low discharge current, phenomena immediately before the wire breakage such as local concentration of discharges and increase of short circuits in the gap, are clearly observed, but it is difficult to observe them in the case of high discharge current.","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125032757","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}
Y. Uno, A. Okada, S. Naka, Shoichi Yamamoto, Y. Sakane
{"title":"Internal Surface Finishing of Small Hole by Electrochemical Processing Using Soluble Fluid for Honing","authors":"Y. Uno, A. Okada, S. Naka, Shoichi Yamamoto, Y. Sakane","doi":"10.2526/JSEME.36.31","DOIUrl":"https://doi.org/10.2526/JSEME.36.31","url":null,"abstract":"Honing has been widely applied to engine cylinders, hydraulic cylinders, nozzles, valves and so on, since not only surface roughness but also roundness and straightness of a hole can be improved by this process. However, in the case of surface roughness less than 1μm Ry, a burr formed by abrasives significantly influences the surface roughness and makes it difficult to attain a better surface. In addition, the machining efficiency significantly decreases, since loading of the stick occurs frequently and several hones have to be prepared. In this study, in order to achieve high accuracy and efficiency in internal surface finishing with less surface roughness, the fundamental effects of electrochemical finishing after honing on surface integrity in the case of using a honing machine with soluble fluid as an electrolyte, are experimentally discussed.Experimental analysis clarified that a suitable electrolytic current density condition existed for improving the surface roughness, and also that passive film generation on the machined surface could be prevented by mixing inverse electrolytic current with the normal one. Then, it was pointed out that the surface roughness could be reduced, since only protruding parts were selectively removed under the suitable condition, even when a soluble fluid was used as an electrolyte. Therefore, this method has the possibility of being a highly efficient internal surface finishing process of small holes after honing.","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125736792","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}