研究者業績

田中 秀岳

タナカ ヒデタケ  (Tanaka Hidetake)

基本情報

所属
上智大学 理工学部機能創造理工学科 准教授
学位
博士(工学)(金沢大学)

J-GLOBAL ID
201501008705364823
researchmap会員ID
7000013453

(研究テーマ)

  1. 傾斜プラネタリ加工及びオービタル加工によるCFRPの高品位穴あけ
  2. ダイヤモンドバニシング工具に関する研究
  3. CADデータに基づいた熱可塑性CFRPの逐次成形による新たな3次元プリンティング
  4. レプリカ法による工具摩耗評価
  5. 展開図を用いたCFRPを用いたシェル形状3次元造形法の開発研究
  6. 自動旋盤を用いた切削・接合・塑性複合加工に関する研究
  7. 機能性樹脂材料の放電援用旋削加工(EDAT)に関する研究
  8. テクスチャを有する油静圧案内面の摩擦力測定に関する研究
  9. ミーリングチャックの把持力分布測定装置の開発研究

論文

 44
  • Hidetake Tanaka, Ryuta Kuboshima
    International Journal of Automation Technology 18(3) 366-373 2024年5月5日  査読有り筆頭著者
    The demand for carbon fiber reinforced plastics (CFRP), classified as functional resins, has increased for micromachined products that are manufactured using lathes and used in the medical field. However, the problems with machining CFRP include the occurrence of burrs and deterioration of the finished dimensions owing to the significant tool wear caused by the carbon fiber. To turn CFRP and maintain high dimensional accuracy, the authors proposed a novel combination of conventional turning and electrical discharge-assisted turning (EDAT). In this study, the capability to control the machinability of EDAT under low-voltage conditions was experimentally investigated. The relationship between the discharge voltage, frequency, and depth of discharge influence of the carbon fibers was clarified.
  • Tatsuki Ikari, Hidetake Tanaka
    International Journal of Automation Technology 18(3) 433-443 2024年5月5日  査読有り最終著者
    Although, three-dimensional printing has several advantages, however there are currently many limitations. In particular, printed products using composite materials such as fiber-reinforced plastic have yet to achieve the same mechanical properties as those obtained from conventional manufacturing methods. In addition, fabricating thin plates or thin shell shapes with sufficient strength is challenging. Incremental forming enables high-mix, low-volume production of thin sheets. This method applies incremental deformation to thin sheets, the desired shape is obtained by accumulating the deformation, and no dies are required. Carbon-fiber-reinforced plastic (CFRP) materials have high specific strength. Discontinuous-fiber CFRP is capable of large plastic deformation under appropriate conditions due to the discontinuity of the reinforcement, and its mechanical properties are nearly isotropic due to the random fiber arrangement. The authors focused on this property and studied the application of single-point incremental forming to discontinuous carbon-fiber-reinforced polyamides. In this study, the workpiece was formed by heating it locally to a deformable temperature by the frictional heat between the rotating tool and the workpiece. The forming experiment was also conducted in an oil bath to keep the entire material at a suitable forming temperature. The results showed that the spindle speed affected forming results even in an oil bath and that heating using an oil bath suppressed deviations from the sine law for thickness and wall angle due to elastic deformation.
  • Hidetake Tanaka, Yuuki Nishimura, Tatsuki Ikari, Emir Yilmaz
    International Journal of Automation Technology 18(1) 128-134 2024年1月5日  査読有り筆頭著者
    Carbon fiber reinforced plastic (CFRP) is a composite material with high specific strength and is applied to transportation and aviation equipment. However, conventional processing methods require large-scale production apparatus or a high level of dexterity that only comes with extensive experience which makes it difficult to achieve high processing efficiency. The objective of this study is to develop a novel method for forming thermos-plastic CFRP (CFRTP) preforms implementing a 3D printer for press molding. Applying this method offers the advantage that continuous carbon fibers can be formed on a free-form surface. It also reduces the manufacturing time and operator skill required. The goal of this research is to establish a method for molding a free-form surface composed of continuous fibers by employing a 3D-printed preform designed to match the unfolded polygonised diagram of the free-form surface. Previous research introduced an unfolding approach for converting a three-dimensional shape to a plane surface based on a computer-aided design and manufacturing (CAD/CAM) system, enabling the generation of an unfolding diagram that maintains the continuity of fiber tow. Furthermore, the validity of unfolded diagram was confirmed by reproducing the objective three-dimensional shape from the unfolded diagram using thermos-setting CPRP (CFRTS) tow prepreg. In this study, the viability of the proposed molding process using CFRTP preform fabricated by a 3D printer was verified and an assessment of the formability of the molded parts was conducted.
  • Hidetake Tanaka
    Solid State Phenomena 354 91-98 2023年12月20日  査読有り筆頭著者
    The Swiss-type automatic lathe is designed for continuous mass production of the same product. In the research, the authors propose a combined turning process in which a joining process using the frictional welding method is introduced into the automatic lathe. If the joining process is performed with a Swiss-type automatic lathe, it is expected that the problem of a large amount of residual material due to the mechanical structure can be solved. Generally, the friction welding method is performed by a dedicated machine and is pressure controlled by a hydraulic power source, however in the case of an automatic lathe, friction welding is controlled by the feed length and feed rate. The low rigidity of automatic lathes is also concerned. In the study, the authors investigated the tensile strength and rotational bending fatigue strength of the A6061 bonding material to investigate and quantitatively evaluate the optimum friction welding conditions that can obtain good bonding results in the friction welding method using a multi-axis automatic lathe. Upset speed was the most influential factor for tensile strength and friction rotation speed was good at about 4000 rpm. This fact suggests that excessive heat input leads to a decrease in tensile strength. The tensile strength was equivalent to that of the annealed material. It also seems that the air-cooled annealing phenomenon occurs during the friction welding process. The results of rotational bending fatigue strength were similar to those of the annealed material. It is clarified that friction welding with an automatic lathe is feasible, however, the strength of the bonded material is reduced to the same level as that of the annealed material.
  • 田中 秀岳, 山本 大雅, 北風 絢子, 鈴木 敏之, 中谷 尊一
    精密工学会誌 89(8) 648-653 2023年8月5日  査読有り筆頭著者

MISC

 2
  • 田中 秀岳
    精密工学会誌 81(6) 507-510 2015年  
  • 高杉 敬吾, 田中 秀岳, 城野 麻美, 浅川 直紀
    精密工学会学術講演会講演論文集 2011 333-334 2011年  
    本研究では産業用ロボットを用いたインクリメンタルハンマリング用工具経路の生成法について述べる.インクリメンタルハンマリングとは,板材に対し逐次的打撃により張り出し成形を行う加工法である.本加工法は切削加工とは異なり,成形過程が加工結果に対して大きく影響を及ぼす.本報ではこのような本加工法における成形特性を考慮した工具経路生成法を提案し,実験によって有効性を確認したので報告する.

講演・口頭発表等

 16
  • 窪嶋 竜太, Yilmaz Emir, 田中 秀岳
    精密工学会学術講演会講演論文集 2023年3月1日 公益社団法人 精密工学会
    本研究は機能性プラスチックの中のCFRPの丸棒に対して放電加工を援用した旋削加工を施す.CFRP は金属と比べると遥かに比強度が高いため,航空機や自動車のボディ,医療分野で金属の代替材料としての需要が拡大している.しかし,強化材として含まれている炭素繊維の影響により工具摩耗が発生しやすく,残存繊維(バリ)や仕上げ寸法の悪化が問題となっている.これらの問題を解決する為に,放電加工と旋削加工を組み合わせる新たな加工方法を提案し,工具摩耗と残存繊維の低減に成功している.また,放電電圧8V前後のパッシェンの法則の領域外の低電圧であり,既存の放電加工とは異なる現象が起きていると考えられるため検証した.
  • Y. Nishimura, T. Ikari, E. Yilmaz, H. Tanaka
    The 19th International Conference on Precision Engineering (ICPE 2022) 2022年11月29日
  • Hidetake Tanaka
    2022 International Conference on Machining, Materials and Mechanical Technologies (IC3MT) 2022年11月11日
  • Tanatat Thangkasemvathana, Yuki Nishimura, Emir Yilmaz, Hidetake Tanaka
    2022 International Conference on Machining, Materials and Mechanical Technologies (IC3MT) 2022年11月11日
  • 猪狩 龍樹, 田中 秀岳, 浅川 直紀, 柳 和久
    精密工学会学術講演会講演論文集 2016年 公益社団法人 精密工学会
    近年注目を浴びる技術に3Dプリンタがある.知名度が高いものは積層造型法であるが,薄板造型では層間強度の問題から,実用的な強度を持たせることは難しい.これらの問題を解決する手段として,試料に熱可塑性CFRTPを用い,遂次成形による3次元造型法を提案した.これは,加熱軟化させた試料をハンマでの逐次的な押下により3次元形状を得る方法である.本研究では予備/成形実験を行い,成形条件や成形性の知見を得た.

所属学協会

 1

共同研究・競争的資金等の研究課題

 5