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1998 Fiscal Year Final Research Report Summary

Stereo-Lithography System for Fabricating Micro-Flexible Mechanism

Research Project

Project/Area Number 08555032
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 機械工作・生産工学
Research InstitutionThe University of Tokyo

Principal Investigator

NAKAJIMA Naomasa  The University of Tokyo, Graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (00011073)

Co-Investigator(Kenkyū-buntansha) YAMADA Takahiro  AISIN COSMOS R&D CO., LTD., Research Department, Researcher, 研究開発部, 研究員
MURAKAMI Tamotsu  The University of Tokyo, Graduate School of Engineering, Associate Professor, 大学院・工学系研究科, 助教授 (20212251)
Project Period (FY) 1996 – 1998
KeywordsMicro-machine / Stereo-Lithography / Photo-forming / Flexible mechanism / Free liquid surface / Liquid surface difference control / Hollow / Rapid prototyping
Research Abstract

The objective of this research is to design and build a photo-forming system, which can create very thin liquid layers in resin surface for the fabrication of micro flexible structures by introducing a hollow surface control into the system.
The results can be summarized as follows.
1. Surface unevenness and layer thickness of free liquid surface were investigated. To solve the problem of surface unevenness, a hollow control method was proposed.
2. Three approaches involving hollow control have been proposed and investigated. In the air pressure control approach, the hollow surface is found suffering severe influences from the change of atmospheric pressure and temperature. Liquid quantity control approach has the problems of the friction between the resin tank and the movable plate, and serious time delay of hollow response to stick adjusting. Liquid surface difference control approach has no the disadvantages of the above-mentioned two approaches and is easily realized.
3. Theoretical analysis and numerical simulation of the hollow shape gave a ground for the design of the nozzle unit. An experimental photo-forming system based on liquid surface difference control approach is designed and built.
4. Examination of hollow layer thickness is conducted. The hollow begins to vibrate when it closes to the platform at a distance of near to 7 mum. This phenomenon limits the minimum layer thickness to be 7 mum.
5. Fabrication of sample models has been undertaken. A micro flexible cantilever part was successfully manufactured.
This is the first time that the liquid surface has been treated as a subject of control in stereo-lithography systems. The layer thickness of 7 mum has been realized. This research shows the effectiveness of the hollow surface control approach on attaining very thin liquid layers and high processing accuracy.

  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] Naomasa NAKAJIMA: "The Scope of Micromachines" Proc.of the 2nd Micromachine Summit. 10-11 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Naomasa NAKAJIMA: "Micromachines as Unconventional Artifacts" Proc.of the 9th Industrial and Engineering Applications of Artificial Intelligence and Expert Systems. 3-8 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 村上存,他: "冷却凝固式光造形法に関する研究" 日本機械学会論文集(C編). 63・606. 605-612 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tamotsu MURAKAMI,et al.: "Refrigerative Stereolithoraphy for Rapid Product Prototyping" Rapid Product Development. 73-82 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 中島尚正,他: "空気圧による液面制御を用いたマイクロマシン用光造形法" 1997年度精密工学会春季大会学術講演会講演論文集. 1111-1112 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Naomasa NAKAJIMA: "The Activities of Micromachines in Japan" Proc.of the 3rd Micromachine Summit. 50-52 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Naomasa NAKAJIMA: "Technolog ical, Economical and Social Importance of Micromachine" Proc.of the China-japan Joint Workshop on Micromachine / MEMS. 3-6 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 中島尚正,他: "マイクロマシン用光造形システムに関する研究" 1997年度精密工学会秋季大会学術請漬会講演論文集. 206 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 中島尚正,他: "液量調整による液面制御を用いたマイクロ光造形" 日本機械学会第75期通常総会請漬会講演論文集(I). No.98-1. 453-454 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Naomasa NAKAJIMA: "Japan' s Country Reviews on Micromachine Technology" Proc.of the 4th World Micromachine Summit. 40-42 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 中島尚正,他: "液量調整による液面制御を用いたマイクロ光造形法" 第14回ラピッド・プロトタイピング・シンポジウム. 41-45 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 中島尚正,他: "液量調整による液面制御を用いたマイクロ光造形法" 日本機械学会第8回設計工学.システム部門講演会講演論文集. NO.98-32. 41-44 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Naomasa NAKAJIMA: "The Scope of Micromachines" Proc.of the 2nd Micromachine Summit. 10-11 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Naomasa NAKAJIMA: "Micromachines as Unconventional Artifacts" Proc.of the 9th Industrial and Engineering Applications of Artificial Intelligence and Expert Systems. 3-8 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tamotsu MURAKAMI,et al.: "Research on Refrigerative Stereo-Lithpgraphy" Transactions of the Japan Society of Mechanical Engineers, C (in Japanese). Vol.63, No.606. 605-612 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tamotsu MURAKAMI,et al.: "Refrigerative Stereo-lithography for Rapid Product Prototyping" Rapid Product Development. 73-82 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Naomasa NAKAJIMA,et al.: "Free Resin Surface Control by Air Pressure for Photoforming Micro Structure" Proc.of the JSPE Spting Meeting. 1111-1112 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Naomasa NAKAJIMA: "The Activities of Micromachines in Japan" Proc.of the 3rd Micromachine Summit. 50-52 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Naomasa NAKAJIMA: "Technological, Economical and Social Importance of Micromachine" Proc.of the China-Japan Joint Workshop on Micromachine/MEMS. 3-6 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Naomasa NAKAJIMA, et al.: "Hollow Surface Control by the Quantity of Liquid Resin for Micro Fabrication" Proc.of the JSPE Fall Meeting. 206 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Naomasa NAKAJIMA,et al.: "Hollow Surface Control by the Quantity of Liquid Resin for Micro Fabrication" Proc.of the 75th JSME Spring Annual Meeting :. 453-454 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Naomasa NAKAJIMA: "Japan's Country Reviews on Micromachine Technology" Proc.of the 4th World Micromachine Summit. 40-42 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Naomasa NAKAJIMA,et al.: "Hollow Surface Control by the Quantity of Liquid Resin for Micro Photoforming Fabrication" The 14th Rapid Prototyping Symposium. 41-45 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Naomasa NAKAJIMA,et al.: "Hollow Surface Control for Micro Photoforming Fabrication" Proc.of the JSME Design & Systems Conference '98. 41-44 (1998)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-12-08  

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