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Prototyping for High Stiffness Magnetic Lead Screw

Research Project

Project/Area Number 09555053
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 設計工学・機械要素・トライボロジー
Research InstitutionTOKYO INSTITUTE OF TECHNOLOGY

Principal Investigator

SHIMOKOUHBE Akira  TOKYO INSTITUTE OF TECHNOLOGY,PRECISION AND INTELLIGENCE LABORATORY,PROFESSOR, 精密工学研究所, 教授 (40016796)

Co-Investigator(Kenkyū-buntansha) HASHIMOTO Jyunnichi  KOYO MACHINE INDUSTRIES CO., LTD.R&D NEW PRODUCT DEPARTMENT,MANAGER, 開発部, 課長
SHINSHI Tadahiko  TOKYO INSTITUTE OF TECHNOLOGY,PRECISION AND INTELLIGENCE LABORATORY,RESEARCH ASS, 精密工学研究所, 助手 (60272720)
SATO Kaiji  TOKYO INSTITUTE OF TECHNOLOGY,PRECISION AND INTELLIGENCE LABORATORY,ASSOCIATE PR, 精密工学研究所, 助教授 (00215766)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥13,600,000 (Direct Cost: ¥13,600,000)
Fiscal Year 1998: ¥5,300,000 (Direct Cost: ¥5,300,000)
Fiscal Year 1997: ¥8,300,000 (Direct Cost: ¥8,300,000)
KeywordsMAGNETIC LEAD SCREW / PERMANENT MAGNET / POSITIONING / NON-CONTACT / STIFFNESS / AXIAL FORCE / 軸方向剛性 / 有限要素法
Research Abstract

This paper proposes a magnetic lead screw mechanism which is comprised of a conventional steel lead screw and a magnetic nut. The nut is made from a helically-magnetized cylindrical permanent magnet and an external steel cover. A driving force from the screw to the nut is transmitted through the magnetic coupling without mechanical contact. So the magnetic lead screw can be used in vacuum, does not make noise and vibration, and is free from lubrication problem. However, the axial stiffness and maximum carrying load of the magnetic lead screws are smaller than those of ordinary lead screws such as ball lead screws and air lead screws. In this paper, first, some experimental magnetic lead screws are made and it is proved that experimental results of the carrying load and stiffness in the axial direction agree well with simulated ones using the FEM models. It is also clarified that the thread depth and flat width of lead screw affect the carrying force of the mechanism. Secondary, a positioning mechanism using a MLS, a linear ball guide to support a table, and a DC motor is introduced. Then the start-up characteristics are clarified by simulation using a dynamic model which is identified by experimental data. Finally the table of the mechanism is positioned with using a laser measurement system as a feedback sensor. The results show that the MLS can drive a 4.5 kg table with maximum 3.4 Nm torque without out-of-step, and that the positioning accuracy using PI-D controller with a square root element is about l0nm.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] 下河辺 明ほか: "新しい磁気ねじの提案とその基本特性" 日本機械学会論文集(C編). 64・618. 310-317 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 下河辺 明ほか: "磁気ねじをもちいた機構の起動時の特性と位置決め精度" 日本機械学会論文集(C編). 64・625. 389-395 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 下河辺 明ほか: "磁気ねじと静圧案内を用いた位置決め機構" 1998年度精密工学会春季大会学術講演会講演論文集. 705- (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] A.Shimokohbe et al.: "Principle and Basic Characteristics of Magnetic Lead Screw" Proc.of Int.Conf.on MIPE. 244-249 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Akira SHIMOKOHBE et al.: "A New Magnetic Lead Screw and Its Basic Characteristics(in Japanese)" Transactions of the Japan Society of Mechanical Engineers C. Vol.64-618. 310 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Akira SHIMOKOHBE et al.: "Start-up Characteristics and Positioning Accuracy of Magnetic Lead Screw Mechanism(in Japanese)" Transactions of the Japan Society of Mechanical Engineers C. Vol.64-625. 389 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Akira SHIMOKOHBE et al.: "Principle and Basic Characteristics of Magnetic Lead Screw" Proc.Int.Conf.MIPE. 244 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 下河辺 明ほか: "新しい磁気ねじの提案とその基本特性" 日本機械学会論文集(C編). 64・618. 310-317 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 下河辺 明ほか: "磁気ねじをもちいた機構の起動時の特性と位置決め精度" 日本機械学会論文集(C編). 64・625. 389-395 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 下河辺 明ほか: "磁気ねじと静圧案内を用いた位置決め機構" 1998年度精密工学会春季大会学術講演会講演論文集. 705 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] A.Shimokohbe et al.: "Principle and Basic Characteristics of Magnetic Lead Screw" Proc.of Int.Conf.on MIPE. 244-249 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] 下河辺 明 ほか: "新しい磁気ねじの提案とその基本特性" 日本機械学会論文集(C編). 64・618. 690-697 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] A.SHIMOKOHBE et al.: "Principle and Basic Charactえristics of Magnetic Lead Screw Mechanism" Proceedings of the International Conference on Micromechatronics for Information and Precision Equipment. 244-249 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 下河辺 明 ほか: "磁気ねじと静圧案内を用いた位置決め機構" 1998年度精密工学会春季大会学術講演会講演論文集. (発表予定). (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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