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A new measurement scheme of volumetric accuracy as a basis to develop a "portable" robotic machining system

Research Project

Project/Area Number 18K03874
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 18020:Manufacturing and production engineering-related
Research InstitutionHiroshima University

Principal Investigator

Soichi Ibaraki  広島大学, 先進理工系科学研究科(工), 教授 (80335190)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords産業用ロボット / 位置決め / 空間精度 / 測定 / 切削 / 幾何学モデル / レーザ干渉計 / 運動精度測定 / レーザトラッカ / 誤差補正 / 工作機械 / 計測
Outline of Final Research Achievements

In today’s manufacturing industry, most industrial robots are programmed by the teach method. In near future, many robots will be programmed offline based on a virtual model. Then a robot’s volumetric accuracy, i.e. the positioning accuracy with respect to the command position arbitrary given in the entire workspace, will be crucial to successfully perform the given task. This paper first proposed a scheme to measure the end effector’s position over the entire workspace. Then, a new kinematic model, containing the bidirectional angular positioning error profile of every rotary axis, was proposed to precisely predict the robot’s volumetric accuracy over the entire workspace. Its prediction accuracy was experimentally verified first with the 2D positioning by a SCARA robot, and then the present model development was extended to the 3D positioning by a six-axis robot.

Academic Significance and Societal Importance of the Research Achievements

現在の製造現場で,産業用ロボットのティーチングを行うオペレータの確保は,ロボットの導入コストを上げる主要因である.製造現場の自動化が今後ますます進み,ロボットの用途が拡大するのは明らかであるが,そのために,ロボットはコンピュータによるプログラミングに移行するだろうと予想する.本研究で構築した,ロボットの空間誤差を高精度に予測できるモデルを使えば,誤差補正を行うことができる.本研究の成果は,ロボットの空間精度を格段に向上させるための基盤技術となる.ロボットがコンピュータによってプログラミングされるようになれば,ロボットの作業の精度は,空間精度が決める.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (12 results)

All 2021 2020 2019 2018

All Presentation (11 results) Patent(Industrial Property Rights) (1 results)

  • [Presentation] 格子状のレーザ光路を用いたSCARAロボットの2次元位置決め精度の測定と,回転軸の角度位置決め偏差の同定2021

    • Author(s)
      富田正俊, 茨木創一
    • Organizer
      2021年度精密工学会春季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Calibration and compensation of rotary axis angular positioning deviations on a SCARA-type industrial robot using a laser tracker2020

    • Author(s)
      Nan Zhao, Soichi Ibaraki
    • Organizer
      JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing (LEMP20)
    • Related Report
      2020 Annual Research Report
  • [Presentation] Identification of a kinematic model of a 6DOF industrial manipulator with angular positioning deviation ‘error map’ of rotary axes2020

    • Author(s)
      Md Moktadir Alam, Soichi Ibaraki, Koki Fukuda, Sho Morita, Hiroshi Usuki
    • Organizer
      ASME 2020 International Symposium on Flexible Automation (ISFA2020)
    • Related Report
      2020 Annual Research Report
  • [Presentation] Measurement of 2D positioning "error map" of a SCARA-type robot over the entire workspace by using a laser interferometer and a PSD sensor2020

    • Author(s)
      Masatoshi Tomita, Soichi Ibaraki
    • Organizer
      ASME 2020 International Symposium on Flexible Automation (ISFA2020)
    • Related Report
      2020 Annual Research Report
  • [Presentation] Estimation of thermal influence on 2D positioning error of a SCARA-type robot over the entire workspace2020

    • Author(s)
      Kandai Kawano, Soichi Ibaraki
    • Organizer
      18th International Conference on Precision Engineering (ICPE2020)
    • Related Report
      2020 Annual Research Report
  • [Presentation] Identification of a novel kinematic model of a 6-DOF robot with bidirectional angular positioning deviation of rotary axes2020

    • Author(s)
      Koki Fukuda, Soichi Ibaraki, Md Moktadir Alam, Sho Morita, Hiroshi Usuki, Naohiro Ohtsuki, Hirotaka Yoshioka
    • Organizer
      18th International Conference on Precision Engineering (ICPE2020)
    • Related Report
      2020 Annual Research Report
  • [Presentation] 可動領域全体におけるSCARAロボットの2次元位置決め精度の測定2020

    • Author(s)
      富田 正俊,茨木 創一
    • Organizer
      日本機械学会 中国四国支部 第58期総会・講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] レーザートラッカを使用したスカラ型ロボットの回転軸角度位置決め偏差の同定と補正2020

    • Author(s)
      趙 楠,茨木 創一
    • Organizer
      日本機械学会 中国四国支部 第58期総会・講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 追尾型レーザ干渉計を用いた6軸ロボットの幾何学モデルの同定2020

    • Author(s)
      福田 功貴,茨木 創一
    • Organizer
      日本機械学会 中国四国学生会 第50回学生員卒業研究発表講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] スカラ型ロボットの熱変形の同定2020

    • Author(s)
      河野 寛大,茨木 創一
    • Organizer
      日本機械学会 中国四国学生会 第50回学生員卒業研究発表講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 「オープンループ・レーザトラッキング測定」によるスカラロボットに対する2軸の関節の角度位置決め偏差の同定法2019

    • Author(s)
      臼井 亮太,茨木 創一
    • Organizer
      2019年度精密工学会春季大会
    • Related Report
      2018 Research-status Report
  • [Patent(Industrial Property Rights)] ロボットの運動精度測定方法及び位置補正方法2018

    • Inventor(s)
      茨木創一
    • Industrial Property Rights Holder
      茨木創一
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-199605
    • Filing Date
      2018
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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