• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

A STUDY ON NC-CUTTER PATH GENERATION FOR SUBDIVISION SURFACES

Research Project

Project/Area Number 12555037
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 InstitutionTHE UNIVERSITY OF TOKYO

Principal Investigator

SUZUKI Hiromasa  Graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (40187761)

Co-Investigator(Kenkyū-buntansha) KASE Kiwamu  RIKEN (The Institute for Physical and Chemical Research), Researcher, 工学基盤研究部, 研究員
KIMURA Fumihiko  Graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (60133104)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥11,700,000 (Direct Cost: ¥11,700,000)
Fiscal Year 2002: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2001: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2000: ¥7,700,000 (Direct Cost: ¥7,700,000)
KeywordsSubdivision Surface / NC Path Generation / CAM / Surface Machinign / 細分割 / 工具経路生成 / CAD / オフセット曲面
Research Abstract

In this study we proposed methodologies and algorithms of slice-cut and finish-cut tool path generation through which a 3-axis NC cutter path can be generated for subdivision surface model automatically. At the beginning, suitable subdivision scheme in order to satisfy industrial requirements, and then a process planning is determined. Next we employ a Z-map model that grid interval of x/y direction can be decided by cutting tolerance and tool parameter to set up mesh points from limit subdivision surface in order to reduce the use of computer memory and raise the computing speed. For work pieces we present a slice-cut tool path generation method with flat-end mills, we generate a cover mesh and set up a Z-map model for it, calculated their cutter contact points and cutter location points and adjust the cutter height to achieve tool paths for every slice. For finish-cut tool path generation we use ball-end mill, and achieve the path by calculating the cutter contact paths with projection points between the limit surface and the Z-map model, and then offset them to cutter location paths. Finally we implement the method and present some examples. For these two kinds of paths, we calculated curvature radius of the limit surface in order to avoid gouging. All of these cutter paths are computed automatically if there is no problem in parameter setting for the desired NC path plan, and the implementation shows that these paths are generated rapidly.

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 鈴木宏正他: "離散的ボロノイ領域を用いた非凸多面体間の最短距離計算法"精密工学会誌. 67・11. 1728-1786 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Suzuki他: "Approximate shortest path on a polyhedral surface and its applications"J. Computer-Aided Design. 33・11. 801-811 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Suzuki他: "Generation of NC Tool Path for Subdivision Surfaces"Proc. CAD/Graphics '2001. 676-682 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Suzuki他: "Distance Computation between Non-Convex Polyhedra at Short Range Based on Discrete Voronoi Regions"Proc. IEEE Geometric Modeling and Processing 2000. 123-128 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Katsuaki Kawachi, Hiromasa Suzuki and Fumihiko Kimura: "Distance Computation between Non-Convex Polyhedra at Short Range Based on Discrete Voronoi Regions (in Japanese)"J. JSPE. 67, No. 11. 1782-1786 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Takashi Kanai and Hiromasa Suzuki: "Approximate shortest path on a polyhedral surface and its applications"J. Computer-Aided Design. 33, No. 11. 801-811 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Joe Kurgano, Hiromasa Suzuki and Fumihiko Kimura: "Generation of NC Tool Path for Subdivision Surfaces"Proc. CAD/Graphics'2001, August 22〜24, 2001, Kunming, China. 676-682 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Katsuaki Kawachi, Hiromasa Suzuki and Fumihiko Kimura: "Distance Computation between Non-Convex Polyhedra at Short Range Based on Discrete Voronoi Regions"Proc. IEEE Geometric Modeling and Processing 2000 (Theory and Applications), Hong Kong April 10-12. 123-128 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] J.Kaurgano, H.Suzuki, F.Kimura: "Generation of NC Tool Path for Subdivision Surfaces"Proc.CAD/Graphics'2001. 676-682 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 鈴木宏正 他: "点群および多面体データに基づく細分割曲面の生成手法"日本機会学論文誌C編. 67・653. 284-289 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Suzuki 他: "Subdivision Surface Fitting Using QEM-based Simplification"Proc.Pacific Graphics 2000. 202-212 (2000)

    • Related Report
      2000 Annual Research Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi