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A High Precision Servomechanism of a Constant Speed for NC Machines

Research Project

Project/Area Number 63550177
Research Category

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

Allocation TypeSingle-year Grants
Research Field 機械力学・制御工学
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

EMURA Takashi  Tohoku Univ., Faculty of Engr., Professor, 工学部, 教授 (80005503)

Co-Investigator(Kenkyū-buntansha) ARAKAWA Akira  Tohoku Univ., Faculty of Engr., Assistant, 工学部, 助手 (60184264)
Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1989: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1988: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsDirect-Drive / Phase-Locked-Loop / PLL / Servomechanism / Gear Finisher / Gear Hobber / NC Machines / Mechatronics / サーボ機構 / NC / 数値制御 / ダイレクトドライブ
Research Abstract

The NC machine is useful for mass production. In particular, it is suitable for producing a complex machine element. However, the NC machine is not suitable for making a special component such as gears. For example, until several years ago, it had been unable to get high precision gears by NC cutting or NC grinding process. It is because a high precisely synchronized servomechanisms are required for NC gear process.
T. Emura of the head of this research project developed a very high precision servomechanism about ten years ago, and he tried to apply his servomechanism to gear cutting machines of NC type. Then he succeeded in cutting high precision gears by a NC hobber.
This research work is carried out in order to increase cutting or grinding speed by means of a direct-drive technique. Since the equivalent moment of inertia of the direct-drive servomechanism is extremely small, an inertial damper was used and the position loop-gain of the servomechanism was increased sufficiently in order to decrease the rotary vibration of a servo- spindle. Moreover the authors applied a new PLL developed by T. Emura to their high speed servo-spindle. After experiments, they succeeded in rotating their spindle at a speed of 4,000rpm and with the accuracy of 20"pp. These speed and accuracy are high enough for NC gear hobbers and NC gear grinders.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] Takashi EMURA: "A Study of High Precision Servo-spindle for Hard Gear Finishng Machine" Proc.of Int.Con.on Advanced Mechatronics(JSME,Tokyo,Japan). 427-432 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Takashi Emura: "A Study on a Numerically Controlled Hobbing Machine Using Direct-Drive Servomechanism" Proc.of Int.Power Transmission and Gearing Conf.(ASME,Chicago,U.S.A.). 697-704 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 鐘兆偉: "ダイレクト・ドライブ式NCホブ盤に関する研究(第2報,歯切精度向上の検討)" 日本機械学会論文集-C編. 55. 2259-2265 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Zhao-Wei Zhong: "Direct-Drive NC Hobbing Machine(Increase of Servo-Stiffness by using Inertial Damper)" JSME International Journal,Ser.3. 31. 470-475 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Takashi EMURA: "A Study of High precision Servo-Spindle for Hard Gear Finishing Machines" Proc. of Int. Con. on Advanced Mechatronics (JSME, Tokyo, Japan), pp.427-432, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Takashi EMURA: "A Study on a Numerically Controlled Hobbing Machine Using Direct-Drive Servomechanism" Proc. of Int. Power Transmission and Gearing Conf.(ASME, Chicago, U.S.A.), pp.697-704, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Zhao-Wei ZHONG: "Direct-Drive NC Hobbing Machine (2nd Report, Investigation of Cutting Accuracy)" Trans. of JSME(C), 55-516, pp.2259-2265, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Zhao-Wei ZHONG: "Direct-Drive NC Hobbing Machine (Increase of Servo Stiffness by Using an Inertial Damper)" JSME Int. Jour.(3), 31-2, pp.470-475, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Takashi EMURA: "A Study of High Precision Servo-Spindle for Hard Gear Finishing Machine" Proc.of Int.Con.on Advanced Mechatronics(JSME,Tokyo,Japan). 427-432 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Takashi Emura: "A Study on a Numerically Controlled Hobbing Machine Using Direct-Drive Servomechanism" Proc.of Int.Power Transmission and Gearing Conf.(ASME,Chicago,U.S.A.). 697-704 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 鐘兆偉: "ダイレクト・ドライブ式NCホブ盤に関する研究(第2報,歯切精度向上の検討)" 日本機械学会論文集-C編. 55. 2259-2265 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Zhao-Wei Zhong: "Direct-Drive NC Hobbing Machine(Increase of Servo-Stiffness by Using Inertial Damper" JSME international Journal,Ser.3. 31. 470-475 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Zhaowei,Zhong;Takashi,Emura: JSME International Journal. 31. 470-475 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 江村超,荒川章: 昭和63年度精密工学会秋期大会学術講演会講演論文集. 489-490 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Takashi,Emura;Akira,Arakawa;Michiaki,Hashitani: Proceeding of International Conference on Advanced Mechatronics. (1989)

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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