Journal of the Japan Society of Electrical-machining Engineers最新文献

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ITS Tooling System ITS工装系统
Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2002-11-29 DOI: 10.2526/JSEME.36.83_13
Erowa Nippon Ltd., Shigetoshi Sakagawa
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引用次数: 0
New EDM from CHARMILLES and Its Latest Technology for Controlling EDM CHARMILLES公司的新型电火花加工及其最新控制技术
Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2002-11-29 DOI: 10.2526/jseme.36.83_9
Agie Charmilles Ltd., Hajime Yasutomo
{"title":"New EDM from CHARMILLES and Its Latest Technology for Controlling EDM","authors":"Agie Charmilles Ltd., Hajime Yasutomo","doi":"10.2526/jseme.36.83_9","DOIUrl":"https://doi.org/10.2526/jseme.36.83_9","url":null,"abstract":"2. ワ イヤ 放 電 加 工 に よ る生 産 性の 向上 2.1 世 界 最 速400mm2/minの 実 現 こ こ数 年 ワイ ヤ 放 電 加 工機 の 荒 加 工 ス ピー ド に は変 化 が な く, 最大300m皿2/min程 度 が技 術 的 限 界 と思 わ れ て い た. ス イ ス ・シ ャル ミー 社 はJIMTOF2002に お い て ワイ ヤ 放 雷加 工 機 の新 た な る加 工 ス ピー ドの 基 準 とな る400mm2/minを 達 成 す る徽 種, ロボ フ ィル440CC(写 真1)を 発 表す る.新 開 発 の デ ジ タル 電源\"ク リー ン カ ッ ト\"を 搭 載 す る この 高 速 ワ イ ヤ 放 電 加 工 機 に よ り, プ レス金 型 の 生 産 性 向 上や 機 械 部 品, 試 作 品加 工 分 野 で の ワイヤ 放 電加 工 の可 能 性 が広 が る と思 われ る. この高速加工を実現したクリーンカット電源の 特徴は, 1秒 間に数百万回発生する新 しい放電 パルス波形と今までにないハイパワーである. 従来電源 との差はすべての加工高 さにて確認で きるが, 特に加工高さの高いパンチ加工や押 し 出し型などの加工において顕著である. そ して安定 した高速加工に欠かせない技術が, 放電状態の リアルタイム適応制御である. 放電 波形はもちろん加工電源 により制御 されている が, 加工中, 常に変化する放電環境により影響 を受ける.ク リーンカ ット電源はハー ドウェア, ソフ トウェアにより1発1発 の放電パルスに作","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":"121650249","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
An Overview of World Die and Mould Industry 世界模具工业综述
Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2002-11-29 DOI: 10.2526/jseme.36.83_2
Shoichi Kuroda
{"title":"An Overview of World Die and Mould Industry","authors":"Shoichi Kuroda","doi":"10.2526/jseme.36.83_2","DOIUrl":"https://doi.org/10.2526/jseme.36.83_2","url":null,"abstract":"1. はじめに このごろ金型に関する報道 を新聞やテレビで よく見かける. たとえば, 今年の小泉首相の基本 方針演説で科学技術政策についてふれたなかで, 日本 には中小企業の築 き上げた金型 のように誇 るべき製品がある, として取 り上げられた. また 最近は, 一般紙に, 日本の大企業が金型工場に発 注 した製品について, メインテナ ンスに必要だと いう理由で図面の提出を求め, それ以後の型は其 の図面で第三国に発注 してコス ト削減を図って いる事例が多いが, それが結果的に日本の製造技 術の流出を促進 している, として大 きく報道され た.そ の対応策 として一部に金型図面 を著作権 と して保護 しようという運動が展開され, 一方, 経 済産業省は平成14年7月12日 付 けで金型図 面等の取引や金型技術の管理保護 に関す る指針 として 「金型図面や金型加工データの意図せ ざる 流出の防止 に関する指針」を, 金型製造業者やユ ーザーに示達 した. 金型は顧客の固有のニーズに よって個別生産 されるもので, その設計, 製造には金型メーカー のノウハウや多 くの工夫が こめられている. さら に近年はCADICAM/CAEの 発展によって金型は 技能集約型か らます ます知識集約型 の産業 に転 化 しつつある. それにもかかわらず金型の取引は, このように 金型 メーカーがその もっている固有のノウハ ウ でユーザーの製造機能を補完 している, という実 態を反映できるようになっていない. 日本のみな らず, 世界中金型の価格設定は, 昔ながらの加工 工数×時間あたり工賃で行われているため, 同一 金型のコピーは賃金の安いところが圧倒 的に有 利である.し かも, 金型メーカーの大多数は中小 企業であるか ら, 通常ユーザーが優越的な立場に 立つことが多い. 金型メーカーも自ら下請けに甘 んじ, 昔から日本では「縁の下の力持ち」, 欧米で は 「UnSangSinger」 〔歌わざる歌手〕, あるいは 「actor behind the scene」 〔舞台に立たない役 者〕として自らの仕事に誇 りをもちながらも, な かば自嘲的に自らの事業を倭小化 している. その反面, 業界の組織団体としてはたとえばア メリカの工業会は, 金型は 「backbone industry」 〔背骨の産業〕, ドイツでは 「Koenigs Industrie」 〔皇帝の産業〕と自ら誇 り, 金型産業の発展な く して国の発展なしと謳いあげている. アメリカの 工業会のパ ンフレットの巻頭 に, 第二次大戦中, アメリカの金型工が徴兵を免除され, ドイツの誇 るロンメル機 甲師団の戦車の厚 い防弾鋼板貫通 のために開発 された弾尾信管や, 日本の対ゼロ戦 用の砲弾の近接信管の量産用金型 を昼夜を分か たず生産に励んだことが特筆大書 されていたこ とがある また, 第一次大戦で ドイツが負けたひ とつの大きな理由として兵器生産用の治工具, 金 * 黒田精工株式会社 名誉会長 〒212-8560神 奈川県川崎市幸区下平間239","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":"114650910","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
Introduction of the New NC MGH Sinker Electric Discharge Machine 新型数控MGH下沉电火花机床的介绍
Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2002-11-29 DOI: 10.2526/JSEME.36.83_39
L. Co., Kunio Fujita
{"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}
引用次数: 0
Study of Surface Modification by Electrical Discharge Machining (1st Report) 电火花加工表面改性的研究(第一期报告)
Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2002-07-31 DOI: 10.2526/JSEME.36.82_25
M. Sano, M. Hihara, K. Yatsushiro, N. Mohri
{"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}
引用次数: 0
Fabrication of Aspheric Optics by Use of Plasma Chemical Vaporization Machining 等离子体化学汽化加工非球面光学元件
Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2002-07-31 DOI: 10.2526/JSEME.36.82_5
H. Takino
{"title":"Fabrication of Aspheric Optics by Use of Plasma Chemical Vaporization Machining","authors":"H. Takino","doi":"10.2526/JSEME.36.82_5","DOIUrl":"https://doi.org/10.2526/JSEME.36.82_5","url":null,"abstract":"1. はじめに 光学部品加工の歴史は古い. 眼鏡用としては13 世紀から, 顕微鏡や望遠鏡用としては16世 紀から 凸レンズや凹レンズが作られている. 現代の加工 法は, 本質的には当時のものと変わりがないとい う1). ところが現在, 最先端産業で使用される光 学部品には, 従来にない機能や高い精度が要求さ れており, それに伴つて新たな加工技術が求めら れるようになってきた. 最近になって, プラズマを利用した様々な超精 密加工技術が提案され始めた2-13). 森らによつて 考案されたプラズマCVM (Chemical Vaporizat ion Machining, 化学的気化加工法) は大気圧高周波プ ラズマを利用 したものである9-13). これは, 大気 圧下において電極のごく近傍だけに生成 したプラ ズマによって超精密加工を行おうというものであ る. このため, 機械加工にも比肩する高い加工の 空間分解能を有しながら, 化学反応によって除去 が行われるために, 機械加工では得られない加工 特性が期待できる. 特に, 光学特性に優れたレン ズやミラ. _を 効率よく加工できる可能性がある. そこで筆者らは, 新技術事業団 (現, 科学技術 振興事業団) の委託開発制度において, プラズマ CVMの 原理を適用した光学部品の超精密加工技術 について検討を行つた. これにより現在までに, 各種の光学部品を精度良く加工することに成功し ている. 本稿では, プラズマCVMに よる光学面の加工技 術について, 前記の委託開発制度の成果である大 口径非球面の高精度加工を例に解説する.","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":"127529485","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
Fine Deep Boring of Cemented Carbide by EDM with YAG Laser (2nd Report) YAG激光电火花精深镗削硬质合金(第二报告)
Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2002-07-31 DOI: 10.2526/JSEME.36.82_18
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}
引用次数: 2
Development of Twin-type Resistorless Power Supply for Electrical Discharge Machining 电火花加工用双型无电阻电源的研制
Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2002-07-31 DOI: 10.2526/JSEME.36.82_33
H. Obara, T. Ohsumi, M. Hatano
{"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}
引用次数: 7
Prevention of Wire Breakage during Wire EDM (3rd Report) 防止电火花加工过程中断线(第三次报告)
Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2002-03-29 DOI: 10.2526/JSEME.36.24
H. Obara, M. Yamada, T. Ohsumi, M. Hatano
{"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}
引用次数: 4
Internal Surface Finishing of Small Hole by Electrochemical Processing Using Soluble Fluid for Honing 利用可溶珩磨液电化学加工小孔内表面
Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2002-03-29 DOI: 10.2526/JSEME.36.31
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}
引用次数: 0
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