金属射出成形材へのマイクロオーダー微細溝の圧印加工 Coining of Microgrooves on Injection Molded Materials

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著者

    • 竹増 光家 TAKEMASU Teruie
    • 九州大学大学院工学研究院知能機械システム部門 Dept. Intelligent Machinery and Systems, Kyushu University
    • 三浦 秀士 MIURA Hideshi
    • 九州大学大学院工学研究院知能機械システム部門 Dept. Intelligent Machinery and Systems, Kyushu University
    • 山本 昌人 YAMAMOTO Masahito
    • 東京農工大学大学院工学教育部機械システム工学専攻 Dept. Mech. Systems Eng., Graduate School of Tech., Tokyo University of Agriculture and Tech.
    • 桑原 利彦 KUWABARA Toshihiko
    • 東京農工大学大学院共生科学技術研究部物質機能科学部門 Div. Adv. Mat. Sci. and Tech., Inst. Symbiotic Sci. and Tech., Tokyo University of Agriculture and Tech.

抄録

The final objective of this study is to establish the optimized manufacturing method of herringbone microgrooves for fluid dynamic spindles. In this article, two kinds of fundamental coining experiments of a simple indentation are carried out to create microgrooves of 5∼10μm depth. In order to compare the coining performance, two kinds of materials are used. One is an austenitic stainless steel (SUS303) of the wrought material and the other is also an austenitic stainless steel (SUS304L) of metal injection molded (MIM) material which has 5% porosity. In experiment-1, a flat head punch with three micro projections of 10μm height is pushed into a hexahedral specimen with or without the ultrasonic vibration. The groove depth of the MIM material increases in proportion to the punch load in the static indentation and its maximum value is about 80% larger than that of the wrought material. The imparting of the ultrasonic vibration is effective to increase the amount of groove depth especially for the MIM material under the lower punch load. In experiment-2, a circular punch and a circular anvil are statically pushed into a cylindrical specimen to produce 18 parallel grooves with an equal pitch in the circumferential direction. The groove profiles become almost uniform and the burr formation at tips of groove shoulder is effectively suppressed under the excessive amount of die indentation.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 53(9), 725-730, 2006-09-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10018247029
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    8518987
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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