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1999 Fiscal Year Final Research Report Summary

STUDY FOR METAL CUTTING MACHINE TOOLS USING PARALLEL MECHANISM

Research Project

Project/Area Number 09650138
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 機械工作・生産工学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

IHARA Yukitoshi  Kyoto University, Engineering, Instructor, 工学研究科, 助手 (90213199)

Co-Investigator(Kenkyū-buntansha) KAKINO Yoshiaki  Kyoto University, Engineering, Professor, 工学研究科, 教授 (00026204)
Project Period (FY) 1997 – 1999
Keywordsparallel mechanism / machine tool / machining process / ball screw / servo motor / calibration
Research Abstract

A machine tool for metal cutting with parallel mechanism is produced. It uses three ball screws and servo motors as a parallel mechanism, which is installed on a base in a triangle. A point on the end plate is controlled in 3 degree of freedoms. On the end plate 2 servo motors with reduction gear are installed and the main spindle is controlled in 5 degree of freedoms.
The machine has the purpose for end milling, drilling and polishing for steel and aluminum, thus it needs high stiffness as well as high speed. It has proved to have enough speed but less stiffness. When the machine is reproduced so as to have enough stiffness, the weight is increased and the speed is decreased.
In order to drill more safely and speedy, possibility of force control, which is not adopted on conventional machine tools, is considered. Moreover, the possibility for measuring machine by installing measuring probe instead of the spindle is discussed.
There are no ultimate methods to calibrate kinematic parameters. In this research, two methods are tried. One is to use straight movement error, the other is to use a circular movement test. Telescoping ball bar is used for circular motion test. In order to analyze the trace pattern of circular motion test, Fourier series is introduced. The results show that the motion error is reduced to one fourth on the circularity when the parameters are identified by circular test.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] Yukitoshi IHARA: "Control of Machine Tool with Parallel-Links Mechanism"Proc.of the 2nd China-Japan Symposium on Mechatronics. 53-58 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yukitoshi IHARA: "Hybrid Force/Position Control by In-Parallel Actuated Machining Mechanism"Proc.of the 2nd Asian Control Conference. III. 599-602 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 井原之敏: "パラレル機構を用いた工作機械に関する研究(第2報)-機構のキャリブレーション-"精密工学会春季大会学術講演会講演論文集. 392-392 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 井原之敏: "ハイブリッドメカニズム型工作機械の精度検定法"日本機械学会第1回生産加工・工作機械部門講演会講演論文集. 197-198 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y. Ihara: "Hybrid Force/Position Control by In-Parallel Actuated Machining Mechanism"2nd Asian Control Conference. Vol.III. 599-602 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Ihara: "Control of Machine Tool with Parallel-Links Mechanism"2nd China-Japan Symposium on Mechatronics. 53-58 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Ihara: "Study for Machine Tools by Using Parallel Mechanism (2nd report)-Kinematic Calibration-"Proceedings of JSPE spring annual meeting. 392 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Ihara: "Accuracy Inspection for Hybrid Mechanism Type Machine Tools"Proceedings of JSME 1ィイD1stィエD1 meeting for production eng. &machine tools,. 197-198 (1999)

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

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Published: 2001-10-23  

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