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Deep Drawability of Polymer and Composite Sheets using a Flexible Punches with Hydraulic Counter Pressure

Research Project

Project/Area Number 06650815
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Material processing/treatments
Research InstitutionScience University of Tokyo

Principal Investigator

NAKAYAMA Toshio  Science University of Tokyo, Associate Professor Department of Engineering, 工学部, 助教授 (40084397)

Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1995: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1994: ¥800,000 (Direct Cost: ¥800,000)
KeywordsDeep Drawing / Polymer Processing / Plastic / Urethane Pad Method / Urethane Ring Method / Flexible Pad / Deep Drawing of Polymers / プラスチック / ポリマー / フレキシブルパット / 複合材料
Research Abstract

Influence of hydrauric pressure on the cylindrical cup drawability of polypropylene (PP) and glass fiber reinforced polypropylene (GFPP) sheets is investigated using a flexible punch. Experimentally measured punch forces, the thickness of side wall and the height in the drawn caps are presented and compared with conventional drawing using a stiff punch. Using a flexible punch, the force needed to drawn a cup found to be lower than that needed when drawing with the stiff punch. Though it was seen to advantage, in this conventional drawing process with a die and a punch for the polymer and the composite sheets, an enlargement in thinning of the cup wall occurred. This phenomenon in thinning of the wall produces an outflow of liquid from the flange which causes the counter pressure to leak.
Consequently free forming of a sheet polymer using a die ring and a urethane pad, and drawing deep cups with Maslennikov's technique using a thin urethane ring and a metal punch were carried out for polypropylene sheet. Drawing method of this technique can perfom the good function of the reduction in thinning of the cup wall for the deep drawing processing of polymers. There are several advantages to be gained with the use of flexible tools over the use of conventional tools for polymer forming.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] 中山登史男・横田隆広: "フレキシブルポンチによるPP及びGFPPの深絞り加工" 塑性加工講演論文集. 46. 337-338 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 高橋秀和(中山登史男): "ポリプロピレン板のウレタンリングを用いた深絞り特性" 平成7年度卒業研究論文集(東京理科大学工学部機械工学). 1-90 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 山田牧人(中山登史男): "ウレタンパッドを用いたポリプロピレンの深絞り加工の研究" 平成7年度卒業研究論文(東京理科大学工学部機械工学). 1-117 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 中山登史男・横田隆広: "ウレタンリングによるポリプロピレン板の深絞り加工" 塑性加工講演論文集. 47. 189-190 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 中山登史男・横田隆広: "フレキシブルポンチによるポリプロピレン及びその複合材料の深絞り加工" 塑性と加工. (発表予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Toshio Nakayama, Takahiro Yokota: "Deep Drawability of PP and GFPP with the Flexible Punches" Proc. of the 46th Japanese Joint Conf.for the Technology of Plasticity. 337-338 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Toshio Nakayama, Takahiro Yokota: "Deep Drawability of Polypropylene Sheets Using a Urethane Ring" Proc. of the 47th Japanese Joint Conf.for the Technology of Plasticity. 189-190 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Toshio Nakayama, Takahiro Yokota: "Deep Drawability of Polypropylene and the Glass Fiber Reinformed Polypropylene with the Flexible Punches" Journal of the Japan Society for Technology of Plasticity. (to be published).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 中山登史男・横田隆広: "フレキシブルポンチによるPP及びGFPPの深絞り加工" 塑性加工講演論文集. 46. 337-338 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 高橋秀和(中山登史男): "ポリプロピレン板のウレタンリングを用いた深絞り特性" 平成7年度卒業研究論文(東京理科大学工学部機械工学科). 1-90 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 山田牧人(中山登史男): "ウレタンパッドを用いたポリプロピレンの深絞り加工の研究" 平成7年度卒業研究論文(東京理科大学工学部機械工学科). 1-117 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 中山登史男・横田隆広: "フレキシブルポンチによるポリプロピレン及びその複合材料の深絞り加工" 塑性と加工. ((発表予定))

    • Related Report
      1995 Annual Research Report
  • [Publications] 中山登史男,藤田譲: "ポリプロピレンおよびポリプロピレン/ガラスクロス複合材料の深絞り加工" 塑性加工講演論文集. 45. 89-92 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 加山雅俊,(中山登史男): "フレキシブルポンチによるPP及びGFPPの深絞り加工特性" 平成6年度卒業研究論文(東京理科大学工学部機械工学科). 1-76 (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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