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STUDY ON ULTRA-HIGH SPEED CUT-OFF GRINDING

Research Project

Project/Area Number 12450054
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

SYOJI Katsuo  TOHOKU UNIV., GRADUATE SCHOOL OF ENGINEERING, PROFESSOR, 大学院・工学研究科, 教授 (80005339)

Co-Investigator(Kenkyū-buntansha) YAMAZAKI Shigekazu  ALLIED MATERIAL CO., LTD., RESEARCHER, 研究員
SATOU Kazunori  BABCOCK HITACHI CO., LTD., CHIEF RESEARCHER, 呉研究所, 主任研究員
KURIYAGAWA Tsunemoto  TOHOKU UNIV., GRADUATE SCHOOL OF ENGINEERING, ASSOCIATE PROFESSOR, 大学院・工学研究科, 助教授 (90170092)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥16,200,000 (Direct Cost: ¥16,200,000)
Fiscal Year 2001: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 2000: ¥11,800,000 (Direct Cost: ¥11,800,000)
KeywordsULTRA-HIGH-SPEED GRINDING / PERIPHRAL SPEED / CUT OFF GRINDING / CBN WHEEL / HIGH EFFICIENCY GRINDING / PERIPHERAL SPEED 400m / s / TITANIUM ALLOY BLADE / CUTTING BLADE / ブレード / 回転強度 / 有限要素法 / 切断砥石
Research Abstract

Grinding efficiency is in proportion to peripheral speed of grinding wheel. Therefore, if the peripheral speed is increased, grinding efficiency will be improved. An ultra-high-speed grinding machine wa developed whose peripheral speed is over 400m/s. The peripheral speed is limited below 300 m/s in the grinding experiment, because of a low failure strength of the rotating wheel. In this project, cBN wheels (blades) for cut-off grinding were developed whose maximum peripheral speed is 400 m/s.
(1) Structural analysis of flange and blade
To realize the actual production utilized the ultra-high speed grinding, the blade with the center hole was fixed with a flange system. An analytical model for cut-off grinding was created to consider both the effect of the center hole and friction between the flange and the blade. As a result, it is found that the peripheral speed of 400 m/s can be realized, when the friction force between the flange and the blade is increased, and material such as titan … More ium alloy or CFRP is used for the flange and blade, whose specific young's modulus is high.
(2) Ultra-high speed rotational test of blade for cut-off grinding
Based on the analytical result, flange and blade were manufactured and rotational failure tests in ultra-high speed domain (20,000〜35,000 rpm (459 m/s)) were carried out using a spin tester. After rotational test of the carbon steel blade only at 30,000 rpm, plastic deformation remained on the blade along the circumferential direction. In the case of the blade that is fixed with flange with low pressure, plastic deformation was recognized around the holes for fixing bolts after rotational test. However, plastic deformation was not recognized in large fixing pressure.
(3) Ultra-high speed cut-off grinding experiment
Based on the results of the spin tests, flange made by titanium alloy and the metal bonded grinding wheel with titanium core was used for ultra-high speed cut-off grinding. Grinding tests with peripheral-speed of 400 m/s were successfully carried out. Less

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 山崎繁一, 岡西幸緒, 福西利夫, 三宅雅也, 庄司克雄, 厨川常元: "超高速研削切断用ホイールの開発"2001年度精密工学会秋季大会学術講演会講演論文集. 486-486 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 山崎繁一, 岡西幸緒, 福西利夫, 三宅雅也, 庄司克雄, 厨川常元: "超高速研削切断用ホイールの開発"日本機械学会2001年度部門講演会講演論文集. 279-280 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 山崎繁一, 小倉養三, 福西利夫, 三宅雅也, 庄司克雄, 厨川常元: "超高速研削切断における研削抵抗と研削熱に関する一考察"2001年度精密工学会秋季大会学術講演会講演論文集. 282-282 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Shigekazu Yamazaki et al.: "Development of Ultra-high Speed Cutting Wheel"Proc. of JSPE, Autumn. 486 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Shigekazu Yamazaki et al.: "Development of Ultra-high Speed Cutting Wheel"The 3rd Manufacturing & Machine Tool Conference. 279-280 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Shigekazu Yamazaki et al.: "A study of relation between grinding force and grinding heat in ultra-high speed grinding cut-off"Proc. of JSPE, Spring. 282 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 山崎繁一, 岡西幸緒, 福西利夫, 三宅雅也, 庄司克雄, 厨川常元: "超高速研削切断用ホイールの開発"2001年精密工業会秋季大会学術講演会講演論文集. 486-486 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 山崎繁一, 岡西幸緒, 福西利夫, 三宅雅也, 庄司克雄, 厨川常元: "超高速研削切断用ホイールの開発"日本機械学会2001年度部門講演会講演論文集. 279-280 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 山崎繁一, 小倉養三, 福西利夫, 三宅雅也, 庄司克雄, 厨川常元: "超高速研削切断における研削抵抗と研削熱に関する一考察"2002年度精密工業会春季大会学術講演会講演論文集. (発表予定). (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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