ミリ波導波管の銀クラッドホビング加工

• Material Type: 記事
• Title: ミリ波導波管の銀クラッドホビング加工
• Author/Editor: 今井 邦典; 日暮 昭彦
• Author Heading: 今井 邦典; 日暮 昭彦
• Periodical title: 精密機械 = Journal of the Japan Society of Precision Engineering : 精機学会誌
• No. or year of volume/issue: 46(8) 1980.08
• Volume: 46
• Issue: 8
• Pages: p965～970
• Publication date of volume/issue (W3CDTF): 1980-08
• ISSN (Periodical Title): 0374-3543
• ISSN-L (Periodical Title): 0374-3543
• Publication (Periodical Title): 東京 : 精機学会 ; [1933]-1985
• Place of Publication (Country Code): JP
• Text Language Code: jpn
• NDLC: ZN12
• Target Audience: 一般
• Article Type: 記事分類: 機械工学--機械工作 ; 電気工学--電気通信--通信部品 ; 金属工学・鉱山工学--金属加工--塑性加工
• Holding library: 国立国会図書館
• Call No.: Z16-466
• Data Provider (Database): 国立国会図書館 : 国立国会図書館雑誌記事索引; https://ndlsearch.ndl.go.jp
• Bibliographic ID (NDL): 2189396; http://id.ndl.go.jp/bib/2189396
• Bibliographic Record Category (NDL): 632

• Summary, etc.: In order to minimize the electrical loss of millimeter waveguides, their surfaces have to be covered with silver with a surface roughness of less than 0.1μm (R<SUB>max</SUB>) and a dimensional accuracy of within 10μm. Present developments, employing advanced cold hobbing with simultaneous silver cladding, have focused on establishing economical fabrication techniques for the waveguides.Ω and U-shaped hobbs were indented into copper blanks covered with silver plates. Metal flow of the blanks was investigated to define the conditions necessary for precise shaping, such as the shape of the hob and the work hardening characteristics of the copper blanks. It has been found that precise shaping can be accomplished using a hob with a shoulder. The initial distortion of the waveguide is corrected by pressing the upper free surface around the guide with the shoulder followed by penetration of an auxiliary hob around the center of the sharpest curve. The newly-developed techniques, facilitating the production of waveguides, decrease the surface roughness to 1/10 and the electrical loss to 2/3 of conventional ones.
• DOI: 10.2493/jjspe1933.46.965
• Access Restrictions: インターネット公開
• Data Provider (Database): 科学技術振興機構 : J-STAGE; http://www.jstage.jst.go.jp

• Summary, etc.: In order to minimize the electrical loss of millimeter waveguides, their surfaces have to be covered with silver with a surface roughness of less than 0.1μm (R<SUB>max</SUB>) and a dimensional accuracy of within 10μm. Present developments, employing advanced cold hobbing with simultaneous silver cladding, have focused on establishing economical fabrication techniques for the waveguides.Ω and U-shaped hobbs were indented into copper blanks covered with silver plates. Metal flow of the blanks was investigated to define the conditions necessary for precise shaping, such as the shape of the hob and the work hardening characteristics of the copper blanks. It has been found that precise shaping can be accomplished using a hob with a shoulder. The initial distortion of the waveguide is corrected by pressing the upper free surface around the guide with the shoulder followed by penetration of an auxiliary hob around the center of the sharpest curve. The newly-developed techniques, facilitating the production of waveguides, decrease the surface roughness to 1/10 and the electrical loss to 2/3 of conventional ones.
• DOI: 10.2493/jjspe1933.46.965; https://doi.org/10.2493/jjspe1933.46.965
• Related Material (URI): http://id.ndl.go.jp/bib/2189396; https://ndlsearch.ndl.go.jp/books/R000000004-I2189396
• Data Provider (Database): 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• Original Data Provider (Database): Japan Link Center; https://japanlinkcenter.org/top; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp; Crossref; https://www.crossref.org; CiNii Articles
• Bibliographic ID (NDL): 2189396; http://id.ndl.go.jp/bib/2189396
• NAID: 130003784558; 110001290991