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1993 Fiscal Year Final Research Report Summary

A Study on Numerically Controlled Machine Tools for Cutting Noncircular Gears and Their Control Method

Research Project

Project/Area Number 04650206
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 Eng., Professor, 工学部, 教授 (80005503)

Co-Investigator(Kenkyū-buntansha) ARAKAWA Akira  Tohoku Univ. Faculty of Eng., Assistant, 工学部, 助手 (60184264)
Project Period (FY) 1992 – 1993
KeywordsNoncircular gears / NC machine tool / Mechatronics / CAD / CAM / NC Gear manufacturing Machine / Compensation for rotational error / Steering mechanism
Research Abstract

Recently, usefulness of noncircular gears has been recognized and the demand of them is rapidly increasing. However, the conventional design and manufacturing method have no capability of production of the noncircular gears as much as the demand. Therefore, the productive manufacturing system for noncircular gears has been strongly desired. In order to improve the productivity and accuracy of the noncircular gears, the investigators tried to increase the performance of NC gear manufacturing machines. In addition, since CAD / CAM system also plays very important roll for improvement of the productivity, a new CAD / CAM system for noncircular gears were developed.
The summary of this research results are as follows : First, we converted a gear shaper and a hobbing machine into NC gear manufacturing machines which can precisely cut noncircular gears. Secondly, as an application for noncircular gears, an compensation mechanism for rotational error of worm gear was proposed and it was proved … More by using the CAD system developed by the investigators that the noncircultar gears for compensation can be easily designed and produced. The ptich curves of them were deduced from Fourier transform. This design method using Fourier Transform is very useful for design of non-uniform motion mechanism because the pitch curves designed by this method are assured that both pitch curves of the driver and follower always have closed form. The CAD system including this design method enables us to design the noncircular gears very effectively in comparison with the system using empirical design methods. In additon, as the other application of noncircular gears, a new steering mechanism for vehicles was proposed. From the result of analysis, it became clear that the noncircular gears for the steering mechanism are elliptical gears. Since the steering mechanism enables the vehicle to turn with a very small radius and the elliptical gears are suitable for productin, we can anticipate that this mechanism will be used for steering system of many kinds of vehicles. Less

  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] T.Emura,L.Wang,A.Arakawa: "A STUDY ON A HIGH-SPEED NC GEAR GRINDING MACHINE USING SCREW-SHAPED CBN WHEEL" ASME International Power Transmission and Gearing Conference. 89-96 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] TAKASHI EMURA,AKIRA ARAKAWA,MICHIAKI HASHITANI: "DEVELOPMENT OF HIGH SPEED SERVO-SPINDLE FOR NC GEAR GRINDING MACHINES" International Journal of Mechatronics. 2. 417-432 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Takashi EMURA,Akira Arakawa: "A New Steering Mechanism Using Noncircular Gears" JSME International Journal. 3. 604-610 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Akira Arakawa,Takashi Emura: "Trajectory Generation for Mobile Robots Using Elliptical Curves" Proceedings of the 6th International Conference on Advanced Robotics. 579-584 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Akira Arakawa,Takashi Emura,Masahiko Hiraki,Lei Wang: "Control of a Quadruped Robot using Double Crank-Slider Mechanism" Proceedings of the IEEE International Conference on Systems,Man and Cybernetics. 4. 157-162 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Takashi Emura,Lei Wang,Akira Arakawa: "A High-Resolution Interpolator for Incremental Encoders by Two-Phase Type PLL" Proceedings of the International Conference on Industrial Electronics,Control and Instrumentation. 3. 1540-1545 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Edited by J.R.Hewit Preston,Buur,Patarinski,Vaha Emura,Weston and Aleksander: "Mechatronics" Springer-Verlag, 315 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.EMURA, L.Wang and A.Arakawa: "A STUDY ON A HIGH-SPEED NC GEAR GRIDING MACHINE USING SCREW-SHAPED CBN WHEEL" Proc. of Int. Power Trans. and Gear Conference. 89-96 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.EMURA, A.ARAKAWA and M.HASHITANI: "Development of High-Speed Serve-Spindle for NC Gear Grinding Machines" Inernational Journal of Mechatronics. Vol.2. 417-432 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takashi EMURA and Akira ARAKAWA: "A New Steering Mechanism Using Noncercular Gears" JSME International Journal. 604-610 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Akira ARAKAWA and Takashi EMURA: "Trajectory Generation for Mobile Robots Using Elliptical Curves" Proc. of 6th Int. Con. on Advanced Robotics. 579-584 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Arakawa, T.Emura, M, Hiraki and L.Wang: "Control of a Quadruped Robot using Double Crank-Slider Mechanism" Proc. of IEEE Int. Con. on Systems, Man and Cybernetics.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takashi Emura, Lei Wang and Akira Arakawa: "A High-Resolution Interpolator for Incremental Encoder by Two-Phase Type PLL" Proc. of Int. Con. on Industrial Electronics. Vol.3. 1540-1545 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takashi Emura: "Mechatronics in NC Machines" Mechatronics, Ddited by J.R.Hewit, Springer-Verlag. 179-220 (1993)

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

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Published: 1995-03-27  

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