Research activity information

• Nov. 2022 The 19th International Machine Tool Engineers’ Conference IMEC2022 Excellent Poster Award


• Dec. 2020 一般財団法人FA財団論文賞


• Jul. 2020 ASME International Symposium on Flexible Automation 2020, ASME International Symposium on Flexible Automation 2020 Young Investigator Award in Flexible Automation

  Isamu Nishida


• Mar. 2020 一般社団法人日本機械学会, 一般社団法人日本機械学会生産システム部門学術業績賞

  西田 勇


• Mar. 2020 公益社団法人精密工学会, 公益社団法人精密工学会研究奨励賞

  西田 勇


• Jun. 2019 一般社団法人型技術協会, 一般社団法人型技術協会奨励賞, NCプログラムの自動生成と加工時間予測で実現する製品形状に応じた工作機械の割当て

  NISHIDA ISAMU

  Japan society


• May 2019 公益財団法人マザック財団, 公益財団法人マザック財団優秀論文賞, Automatic Determination of Cutting Conditions for NC Program Generation by Reusing Machining Case Data based on Geometric Properties of Removal Volume

  NISHIDA ISAMU

  Others


• Apr. 2019 The Japan Society of Mechanical Engineers, JSME Medal for Outstanding Paper, Time Domain Coupled Simulation of Machine Tool Dynamic Behavior and Cutting Force based on Voxel Simulator of Machining Operation

  NOGUCHI SHIN, NISHIDA ISAMU, SATO RYUTA, SHIRASE KEIICHI

  Official journal


• May 2018 公益財団法人マザック財団, 公益財団法人マザック財団優秀論文賞, ボクセルモデルを用いた切削シミュレーションにおける微小時間および微小空間解析の高速処理手法

  NISHIDA ISAMU

  Others


• Sep. 2016 日本機械学会 RC272, 日本機械学会RC272産学連携による若手育成プログラムCIA4YI2016 最優秀賞, 産学連携による若手育成プログラムCIA4YI2016

  NISHIDA ISAMU

  Others


• Jun. 2012 日本人間工学会, 2011年度日本人間工学会研究奨励賞, 拮抗筋および二関節筋を考慮した下肢筋力の推定手法 －垂直跳びにおける下肢筋力の推定－

  NISHIDA ISAMU

  Official journal


• Mar. 2010 日本機械学会, 2009年度日本機械学会三浦賞, 二関節筋を考慮した筋骨格モデルを用いた人体の運動解析に関する研究

  NISHIDA ISAMU

  Others

• Automated NC program generation for hole drilling and swarf machining by 5-axis indexing machining

  Takumi NOMURA, Eiki YAMADA, Hidenori NAKATSUJI, Isamu NISHIDA

  Corresponding, Japan Society of Mechanical Engineers, Feb. 2024, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 18(4) (4), JAMDSM0039 - JAMDSM0039

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Automatic extraction of blood cells in bone marrow examination with an automatic imaging instrument

  Kazuma KUROTANI, Yoshiharu MIYATA, Isamu NISHIDA

  Japan Society of Mechanical Engineers, 2024, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 18(4) (4), JAMDSM0037 - JAMDSM0037

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Automated process planning system to machine organic shapes by combining turning and milling

  Ryo TAKAMORI, Hidenori NAKATSUJI, Isamu NISHIDA

  Japan Society of Mechanical Engineers, 2024, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 18(4) (4), JAMDSM0038 - JAMDSM0038

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Automated Process Planning System for Machining Injection Molding Dies Using CAD Models of Product Shapes in STL Format

  Isamu Nishida, Eiki Yamada, Hidenori Nakatsuji

  In this study, we developed a method for automatically generating computer-aided design (CAD) models of injection molding dies. The method only required 3D CAD models of products in the Standard Triangulated Language (STL) format as the input information. We also developed a system for automatically generating numerical control (NC) programs by automating the system process planning necessary for machining the injection molding dies. The method generated CAD models of the injection molding dies by dividing the STL files of the products into triangular meshes on a specified split plane. For injection molding dies with several free curved surfaces, we acquired the tool positions of a ball end mill (as approximated by a spherical shape) and flat drill (as approximated by a cylindrical shape) from the geometrical relationships of the triangles constituting the CAD model. We generated a CAD model of an injection molding die using the proposed method with respect to the CAD model of a product shape to verify the validity of the developed system. Then, we machined the product based on the NC programs and tool position. In addition, we injection molded a product with a machined die to mold it into its original product shape.

  Lead, Fuji Technology Press Ltd., Nov. 2023, International Journal of Automation Technology, 17(6) (6), 619 - 626, English

  [Refereed]

  Scientific journal


• Fast simulation of machining error induced by elastic deformation of tool system in end milling

  Kazuki KANEKO, Masatomo INUI, Isamu NISHIDA

  Japan Society of Mechanical Engineers, May 2023, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 17(3) (3), JAMDSM0035 - JAMDSM0035, English

  [Refereed]

  Scientific journal


• Automated Generation of Product Assembly Order Based on Geometric Constraints Between Parts

  Isamu Nishida, Hayato Sawada, Keiichi Shirase

  This study proposes a method for automating the determination of assembly order by automating the derivation of the necessary connection relationships between the parts. The proposed method minimizes the information required for the initial conditions and automatically determines the feasible assembly orders. As a general rule, based on the assumption that the assembly order for a product is the reverse of the disassembly order, once the disassembly order is derived based on the 3D CAD model and the connection relationships between the parts, the assembly order can be determined. Until now, however, the relationships between the parts are decided manually by the attendant engineers, thus, hindering the full automation of the determination of the assembly order. To achieve full automation realistically, the connection relationships between the parts should be derived automatically from the 3D CAD model, for which this study proposes an efficient method. The components were extracted from the 3D CAD model, and the bolts were identified. The connection relationships between the parts were derived from the interference conditions determined while moving each part minutely. An association chart diagram was created from the obtained connection relationships, from which multiple assembly order candidates could be derived.

  Fuji Technology Press Ltd., Mar. 2023, International Journal of Automation Technology, 17(2) (2), 167 - 175

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Tool life prediction in end milling using a combination of machining simulation and tool wear progress data

  Rei MATSUMURA, Isamu NISHIDA, Keiichi SHIRASE

  Japan Society of Mechanical Engineers, 2023, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 17(2) (2), JAMDSM0025 - JAMDSM0025

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Development of a power transmission device for bicycles and verification of its effectiveness using musculoskeletal model

  Isamu NISHIDA, Tomoyuki NISHIKAWA, Kenji HARIMA, Yuusuke TOMITA

  Lead, Japan Society of Mechanical Engineers, 2022, Transactions of the JSME (in Japanese), 88(914) (914), 22 - 00208

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Automated Process Planning System for End-Milling Operation by CAD Model in STL Format

  Isamu Nishida, Keiichi Shirase

  A method for extracting the machining region from a 3D CAD model in Standard Triangulated Language (STL) format and automatically generating a tool path is proposed. First, a method is proposed for extracting the machining region and obtaining the geometrical features such as a convex or concave shape from only the 3D CAD model in STL format. The STL format uses only triangular mesh data and drops all information, which is necessary for extracting the removal volume for the machining and geometrical characteristics. Furthermore, the triangular mesh size is non-uniform. A contour line model is proposed in which the product model is minutely divided on the plane along any one axial direction and is represented by points at intervals below the indicated resolution obtained from the contour line of the cross section of the product. Subsequently, a method is proposed to determine the machining conditions for each extracted machining region and automatically generate a tool path according to the geometrical features of the machining region obtained. A machining experiment was conducted to validate the effectiveness of the proposed method. As a result of the machining experiment, it was confirmed that the tool path automatically generated from the 3D CAD model in STL format can be machined without any problems and with a practical level of accuracy.

  Lead, Fuji Technology Press Ltd., Mar. 2021, International Journal of Automation Technology, 15(2) (2), 149 - 157

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Automated tool path generation for end-milling operation using cad model in STL format

  Isamu Nishida, Keiichi Shirase

  American Society of Mechanical Engineers, 2021, Proceedings of the ASME 2021 16th International Manufacturing Science and Engineering Conference, MSEC 2021, 1, English

  International conference proceedings


• A practical method to monitor tool wear in end milling using a changing cutting force model that requires no additional sensors

  Kazuki KANEKO, Isamu NISHIDA, Ryuta SATO, Keiichi SHIRASE

  Japan Society of Mechanical Engineers, 2021, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 15(6) (6), JAMDSM0077 - JAMDSM0077

  [Refereed]

  Scientific journal


• Automated Tool Path Generation for Roughing Using Flat Drill

  Isamu Nishida, Hidenori Nakatsuji, Keiichi Shirase

  A method to calculate tool path uniquely for roughing using a flat drill is proposed. A flat drill is a drill with a flat tip. Unlike a square end mill, it cannot feed a tool laterally, but it is suitable for machining to feed a tool longitudinally. The advantage offered by the flat drill is expected to reduce machining troubles, such as tool breakages and chatter vibration, owing to the axial sturdiness of the tool. Furthermore, it can be used to machine lapped holes that cannot be machined with a normal drill owing to its flat tip. Hence, roughing using a flat drill by drilling multiple holes at constant intervals is proposed herein. Furthermore, in this method, a tool path for semi-finishing is generated only on the remaining region. A cutting experiment is conducted to validate the effectiveness of the proposed method. The result of the cutting experiment confirmed the effectiveness of the proposed method based on the machining time and the productivity of machining multiple products simultaneously.

  Lead, Fuji Technology Press Ltd., Nov. 2020, International Journal of Automation Technology, 14(6) (6), 1036 - 1044

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Proposal of Sensor-Less Cutting Force Monitoring Method Based on Equivalent Cutting Force Prediction Using Real Time End Milling Simulator

  Kazuki KANEKO, Isamu NISHIDA, Ryuta SATO, Keiichi SHIRASE

  Japan Society for Precision Engineering, Sep. 2020, Journal of the Japan Society for Precision Engineering, 86(9) (9), 708 - 713

  [Refereed]

  Scientific journal


• Applicability assessment and adaptation method of cutting conditions based on acceptable area to select cutting conditions for end-milling operation

  Isamu NISHIDA, Ryosuke HORIMOTO, Ryuta SATO, Keiichi SHIRASE

  Japan Society of Mechanical Engineers, Jul. 2020, Transactions of the JSME (in Japanese), 86(887) (887), 20 - 00153

  [Refereed]

  Scientific journal


• Machining time reduction by tool path modification to eliminate air cutting motion for end milling operation

  Isamu Nishida, Keiichi Shirase

  Jun. 2020, International Journal of Automation Technology, 14(3) (3), 459 - 466, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Evaluation of contacting effect between tool and workpiece on vibration characteristics of NC machine tools

  Taisuke Hokazono, Ryuta Sato, Isamu Nishida, Keiichi Shirase

  American Society of Mechanical Engineers, 2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing, LEMP 2020, English

  International conference proceedings


• Sensor-less tool wear estimation based on change in value of identified parameter in cutting force prediction model

  Kazuki Kaneko, Isamu Nishida, Ryuta Sato, Keiichi Shirase

  American Society of Mechanical Engineers, 2020, JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing, LEMP 2020, English

  International conference proceedings


• Development of CAM software to achieve automated NC program generation: Application to machining from near net shape material

  Isamu Nishida, Keiichi Shirase

  American Society of Mechanical Engineers (ASME), 2020, 2020 International Symposium on Flexible Automation, ISFA 2020, English

  International conference proceedings


• Influence of contact between tool and workpiece onto vibration characteristics of machine tools (Evaluation method and influence of contact length of cutting edge)

  Taisuke HOKAZONO, Ryuta SATO, Isamu NISHIDA, Keiichi SHIRASE

  Japan Society of Mechanical Engineers, 2020, Transactions of the JSME (in Japanese), 86(892) (892), 20 - 00185

  Scientific journal


• Dynamical model of muscle fatigue and recovery considering the behavior of slow- and fast-twitch muscles and the roles of antagonistic muscles

  Hayato MIURA, Isamu NISHIDA, Keiichi SHIRASE

  Corresponding, Japan Society of Mechanical Engineers, 2020, Mechanical Engineering Journal, 7(3) (3), 20 - 00023, English

  [Refereed]

  Scientific journal


• Time domain coupled simulation of machine tool dynamics and cutting forces considering the influences of nonlinear friction characteristics and process damping

  Ryuta Sato, Shin Noguchi, Taisuke Hokazono, Isamu Nishida, Keiichi Shirase

  Jan. 2020, Precision Engineering, 61, 103 - 109

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Proposal of contour line model for high-speed end milling simulation

  Isamu Nishida, Keiichi Shirase

  Lead, Jan. 2020, International Journal of Automation Technology, 14(1) (1), English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Machine tool assignment realized by automated NC program generation and machining time prediction

  NISHIDA Isamu, Shirase Keiichi

  Sep. 2019, International Journal of Automation Technology, 13(5) (5), 700 - 707, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Automated process planning system for end-milling operation considering geometric dimensioning and tolerancing (GD&T)

  Isamu Nishida, Shogo Adachi, Keiichi Shirase

  Lead, Aug. 2019, International Journal of Automation Technology, 13(6) (6), 825 - 833, English

  [Refereed]

  Scientific journal


• Muscle force prediction method considering the role of antagonistic muscle based on a coupled spring model

  DAIJU YUKI, NISHIDA ISAMU, SHIRASE KEIICHI

  Jun. 2019, Mechanical Engineering Journal, 6(4) (4), English

  [Refereed]

  Scientific journal


• Sequence planning of on-machine measurement and re-machining

  NISHIDA ISAMU, MURASE MOTOAKI, SHIRASE KEIICHI

  Feb. 2019, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 13(1) (1), English

  [Refereed]

  Scientific journal


• Muscle force prediction method considering the role of antagonistic muscle

  Yuki Daijyu, Isamu Nishida, Keiichi Shirase

  Springer Verlag, 2019, Advances in Intelligent Systems and Computing, 780, 472 - 482, English

  International conference proceedings


• Automated measuring planning for on-machine measurement and re-machining process

  Motoaki Murase, Isamu Nishida, Ryuta Sato, Keiichi Shirase

  2019, ASME 2019 14th International Manufacturing Science and Engineering Conference, MSEC 2019, 2

  [Refereed]

  International conference proceedings


• Automated On-Machine Measurement Based on Process Planning Information

  Nishida Isamu, Murase Motoaki, Sato Ryuta, Shirase Keiichi

  According to the change of manufacturing style from mass production to customized production, it is important to manage the process plan and to control the machining quality of products. On machine measurement (OMM) has an advantage that it eliminates the operations of remove and reattachment of the workpiece and eliminates the positioning error at the reattachment. The contact measurement using a touch probe is one of the OMM. However, this measurement requires decision of measuring points and paths in order to conduct the measurement using touch probe. Currently, measuring paths of the touch probe is generated by an operator who can recognize the shape of the workpiece, determine the measuring regions and the measuring points. The objective of this study is automatically generation of the NC program to instruct OMM using a touch probe. This study realizes automatically generation of the NC program to instruct OMM by focusing on recognition of the geometrical property of the product shape based on the removal volume and determination of the measuring points and paths.

  THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE), 2019, Transactions of the Institute of Systems, Control and Information Engineers, 32(5) (5), 212 - 217, Japanese

  [Refereed]


• Prediction of tool wear amount in square end milling

  Kasatani Kazuki, Nishida Isamu, Sato Ryuta, Shirase Keiichi

  スクエアエンドミル加工の実験から，工具刃先に作用する切削エネルギの累積値と工具逃げ面の摩耗量との間に線形関係があることが明らかとなった。この関係を利用して，切削シミュレーションを行って切削エネルギの累積値を計算することで，加工中の切削状態の変化に依らず工具摩耗量の予測が可能であることを示す。また，実加工において測定した摩耗量の変化と予測した摩耗量の変化とを比較することで本手法の有効性を確認した。

  The Japan Society for Precision Engineering, 2019, Proceedings of JSPE Semestrial Meeting, 2019(0) (0), 191 - 192, Japanese

  [Refereed]


• 産業用ロボットによるグラインダ作業の動作計画のための加工形状シミュレーション

  山本 拓也, 西田 勇, 佐藤 隆太, 白瀬 敬一

  グラインダ作業は熟練作業者の経験や勘に頼る加工工程で，加工条件と加工形状の関係が不明で自動化が難しい作業である．本研究では産業用ロボットによるグラインダ作業の自動化を目的として，グラインダの送り速度，押し付け力といった作業動作から加工形状を予測するシミュレータを開発した．シミュレータはPrestonの法則を用いて局所的な除去体積を計算しており，加工形状の予測結果が測定結果と一致することを確認した．

  公益社団法人 精密工学会, 2019, 精密工学会学術講演会講演論文集, 2019(0) (0), 719 - 720, Japanese

  [Refereed]


• Machining state monitoring in end milling based on comparison of monitored and predicted cutting torques

  Kazuki Kaneko, Isamu Nishida, Ryuta Sato, Keiichi Shirase

  2019, Journal of Advanced Mechanical Design, Systems and Manufacturing, 13(3) (3), English

  [Refereed]

  Scientific journal


• Improvement of simultaneous 5-axis controlled machining accuracy by CL-data modification

  Ryuta Sato, Kiichi Morishita, Isamu Nishida, Keiichi Shirase, Masanobu Hasegawa, Akira Saito, Takayuki Iwasaki

  2019, International Journal of Automation Technology, 13(5) (5), 583 - 592

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• 工具系の弾性変形に起因する加工誤差の予測結果に基づく加工誤差補正

  NISHIDA ISAMU, SHIRASE KEIICHI

  Jan. 2019, 精密工学会誌, 85(1) (1), 91 - 97, Japanese

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Dynamic model of muscle fatigue and recovery considering the roles of slow-twitch and fast-twitch muscles validated with a gripping experiment

  MIURA HAYATO, NISHIDA ISAMU, SHIRASE KEIICHI

  Jan. 2019, Mechanical Engineering Journal, 6(1) (1), English

  [Refereed]

  Scientific journal


• Customized End Milling Operation of Dental Artificial Crown without CAM Operation

  NISHIDA ISAMU, TSUYAMA RYO, SATO RYUTA, SHIRASE KEIICHI

  Dec. 2018, International Journal of Automation Technology, 12(6) (6), English

  [Refereed]

  Scientific journal


• 作業設計を考慮したエンドミル加工用自動工程設計システム（第1報 工具交換回数の最小化）

  NISHIDA ISAMU, SHIRASE KEIICHI

  Oct. 2018, 日本機械学会論文集, 84(866) (866), Japanese

  [Refereed]

  Scientific journal


• Automatic Determination of Cutting Conditions for NC Program Generation by Reusing Machining Case Data based on Geometric Properties of Removal Volume

  NISHIDA ISAMU, SHIRASE KEIICHI

  Jul. 2018, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 12(4) (4), English

  [Refereed]

  Scientific journal


• 工具系の弾性変形を考慮したボクセルモデルによるエンドミル加工シミュレーション

  NISHIDA ISAMU, 奥村 龍馬, SATO RYUTA, SHIRASE KEIICHI

  Feb. 2018, 精密工学会誌, 84(6) (6), 572 - 577, Japanese

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• ボクセルモデルを用いた切削シミュレーションにおける微小時間および微小空間解析の高速処理手法

  NISHIDA ISAMU, SATO RYUTA, SHIRASE KEIICHI

  Feb. 2018, 精密工学会誌, 84(2) (2), Japanese

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Voxel based end-milling simulation considering elastic deflection of tool system

  Isamu Nishida, Ryuma Okumura, Ryuta Sato, Keiichi Shirase

  2018, Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering, 84(6) (6), 572 - 577

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Enhancement of motion accuracy for cone-frustum cutting motion by modified NC program

  Kiichi Morishita, Ryuta Sato, Keiichi Shirase, Isamu Nishida

  2018, ASME 2018 13th International Manufacturing Science and Engineering Conference, MSEC 2018, 4

  [Refereed]

  International conference proceedings


• Voxel based cutting force simulation of ball end milling considering cutting edge around center web

  Isamu Nishida, Takaya Nakamura, Ryuta Sato, Keiichi Shirase

  2018, ASME 2018 13th International Manufacturing Science and Engineering Conference, MSEC 2018, 4

  [Refereed]

  International conference proceedings


• Virtual milling force monitoring method based on in-process milling force prediction model to eliminate predetermination of cutting coefficients

  Kazuki Kaneko, Isamu Nishida, Ryuta Sato, Keiichi Shirase

  2018, Procedia CIRP, 77, 22 - 25

  [Refereed]

  International conference proceedings


• Cutting force and finish surface simulation of end milling operation in consideration of static tool deflection by using voxel model

  Isamu Nishida, Ryuma Okumura, Ryuta Sato, Keiichi Shirase

  2018, Procedia CIRP, 77, 574 - 577

  [Refereed]

  International conference proceedings


• Automatic process planning system for end-milling operation reflecting cam operator’s intention

  Isamu Nishida, Taishi Hirai, Ryuta Sato, Keiichi Shirase

  2018, Proceedings of 2018 ISFA - 2018 International Symposium on Flexible Automation

  [Refereed]

  International conference proceedings


• Automation of on-machine measurement based on 3D CAD model of product

  Motoaki Murase, Isamu Nishida, Ryuta Sato, Keiichi Shirase

  2018, Proceedings of 2018 ISFA - 2018 International Symposium on Flexible Automation

  [Refereed]

  International conference proceedings


• High speed computational algorithm in voxel based milling process simulation for minute time and minute space resolution analysis

  Isamu Nishida, Ryuta Sato, Keiichi Shirase

  2018, Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering, 84(2) (2), 175 - 181

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Derivation of Process Plan Reflecting User's Intention in Automate Process Planning System for Milling Operation

  Hirai Taishi, Nishida Isamu, Sato Ryuta, Shirase Keiichi

  In this study, an automatic process planning system for milling operation is proposed, in which user's intention for process planning is considered. First, our new process planning system stores the geometrical properties of the selected machining region when a user decides the machining sequence. After storing the geometrical properties, the appropriate machining sequence can be automatically selected by referring geometrical properties of the machining region. User's intention, which is involved implicitly in the stored geometrical properties of the machining region, can be applied to decide machining sequence. A case study was conducted to show the effectiveness of our new proposed process planning system. In the case study, user-specific machining sequences were automatically determined based on the implicit relation among the geometrical properties of the machining region and the individual user's intention.

  The Japan Society of Mechanical Engineers, 2018, The Proceedings of Manufacturing Systems Division Conference, 2018(0) (0), 511 - 511, Japanese

  [Refereed]


• Autonomous End Milling Operation of Dental Prostheses without CAM Operation

  TSUYAMA Ryo, NISHIDA Isamu, SATO Ryuta, SHIRASE Keiichi

  In this study, autonomous end milling system for manufacturing custom-made dental prostheses was developed. This system can decide suitable machining orientation of dental prostheses to minimize unmachined volume automatically, and can prevent tool breakage by tool feed rate control based on the predicted cutting forces in end milling operation.

  The Japan Society of Mechanical Engineers, 2018, The Proceedings of Conference of Kansai Branch, 2018(0) (0), 517 - 517, Japanese

  [Refereed]


• Automation of Bending Sequence Planning and Path Generation to Realize Autonomous Sheet Metal Bending by Industrial Robot

  MIYAMURA Toshiki, NISHIDA Isamu, Sato Ryuta, SHIRASE Keiichi

  This paper describes an automation system to realize autonomous sheet metal bending operation by industrial robot. This system can derive bending sequences using topological information in a CAD model of a sheet metal product, and can generate operation paths to control an industrial robot in consideration of its positions and configurations.

  The Japan Society of Mechanical Engineers, 2018, The Proceedings of Conference of Kansai Branch, 2018(0) (0), 509 - 509, Japanese

  [Refereed]


• Enhancement of simultaneous 5-axis control machining accuracy by modified CL-data

  MORISHITA Kiichi, SATO Ryuta, NISHIDA Isamu, SHIRASE Keiichi, IWASAKI Takayuki, HASEGAWA Masanobu, SAITO Akira

  Since motion accuracy of 5-axis machining centers directly influences the geometrical accuracy of the machined workpieces, accuracy enhancement of the 5-axis machining centers is strongly demanded. In order to improve the geometrical accuracy during the machining by a 5-axis machining centers, a method that modifies the CL-data based on the tracking errors normal to the machined surface at each command point has been proposed. In this study, the proposed method is applied to simultaneous 5-axis controlled machining to improve the motion accuracy. A normal vector calculation method for the simultaneous 5-axis controlled motion is newly proposed, and the compensation method is applied to the turbine blade machining by 5-axis controlled motions. Measurement tests of the cutting motion for the blade shape machining by a ball-end mill are carried out with the different control mode of the controller. The CL-data for machining tool path is also modified based on the calculated trajectory of the tool center point. Experimental results show that the feed speed and machining accuracy significantly depend on the control mode, and that the shape accuracy can be improved by applying the proposed compensation method without any decreasing of the motion speed.

  The Japan Society of Mechanical Engineers, 2018, The Proceedings of Mechanical Engineering Congress, Japan, 2018(0) (0), S1310002, Japanese

  [Refereed]


• Cutting trouble detection system based on quantitative comparison between predicted and measured cutting torques (1st report Cutting trouble detection for tool wear)

  NISHIDA Isamu, TATEKAWA Muneharu, SATO Ryuta, SHIRASE Keiichi

  This study aims to develop a monitoring system, which can automatically detect tool wear in end-milling operation. A feature of this system is the utilization of the predicted cutting torque for detecting the difference between normal and cutting trouble. The cutting torque predicted by a cutting force simulator is compared with the cutting torque measured and evaluated from the driving torque of a spindle motor. Because the dynamic change of the cutting torque can be predicted by the cutting force simulator as the reference cutting torque, it is possible to detect cutting trouble correctly without disturbance arise from the changes of the cutting conditions and the machining form at every moment. In the cutting simulator, this study uses the workpiece voxel model in order to calculate the uncut chip thickness for the estimation of the cutting force. For the tool wear detection, 200 % increase of the average cutting torque is set as the threshold to detect 300 μm flank wear. In an experimental milling of a workpiece with holes using a worn square end mill, it is confirmed that the increase of the average cutting torque can be identified clearly in both of stationary and transient milling situations. It was verified that the tool flank wear could be detected correctly even in the dynamic change of milling operation.

  The Japan Society of Mechanical Engineers, 2018, Transactions of the JSME (in Japanese), 84(857) (857), 17 - 00433-17-00433, Japanese

  [Refereed]

  Scientific journal


• CAM操作者の意図を考慮したエンドミル加工用自動工程設計システム

  NISHIDA ISAMU, 平井 大志, SATO RYUTA, SHIRASE KEIICHI

  2018, 日本機械学会論文集, 84(860) (860), Japanese

  [Refereed]

  Scientific journal


• Cutting Force Simulation of Corner Radius End Mill Based on Fully Voxel Representation of Cutting Edge and Instantaneous Workpiece Shape

  Nishida Isamu, Okumura Ryuma, Sato Ryuta, Shirase Keiichi

  A new cutting force simulator, which calculates discretely uncut chip thickness based on fully voxel representation of cutting edge and instantaneous workpiece shape, has been developed to predict cutting force for corner radius end mill. In this cutting force simulator, it is possible to detect the uncut chip thickness between the complex workpiece shape and the special cutting edge shape such as corner radius end mill. Experimental milling tests using a corner radius end mill were conducted for the verification of this cutting force simulation. Predicted milling forces have good agreement with measured milling forces.

  Society of Automotive Engineers of Japan, 2018, Transactions of Society of Automotive Engineers of Japan, 49(1) (1), 107 - 111, Japanese

  [Refereed]

  Scientific journal


• Cutting Force Simulation in Minute Time Resolution for Ball End Milling Under Various Tool Posture

  NISHIDA ISAMU, OKUMURA RYUMA, SATO RYUTA, SHIRASE KEIICHI

  Dec. 2017, Journal of Manufacturing Science and Engineering (ASME), 140(2) (2), English

  [Refereed]

  Scientific journal


• Coupled simulation between machine tool behavior and cutting force using voxel simulator

  Shin Noguchi, Ryuta Sato, Isamu Nishida, Keiichi Shirase

  Nov. 2017, Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017

  [Refereed]

  International conference proceedings


• A revised instantaneous rigid force model for end-milling operation to eliminate predetermination of cutting coefficients

  Kazuki Kaneko, Isamu Nishida, Ryuta Sato, Keiichi Shirase

  Nov. 2017, Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017

  [Refereed]

  International conference proceedings


• Determination of cutting conditions for NC program generation by reusing machining case data based on removal volume feature

  Isamu Nishida, Ryuta Sato, Keiichi Shirase

  Nov. 2017, Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017

  [Refereed]

  International conference proceedings


• Simulation Method of Working Condition in Lifting Operation Considering the Role of Antagonistic Muscles and Biarticular Muscle

  NISHIDA ISAMU, MAEDA MASATO, KAWANO TSUNEO, SHIRASE KEIICHI

  May 2017, Journal of Ergonomics, 7(2) (2), English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Cutting Trouble Detection Based on Quantitative Comparison between Predicted and Measured Cutting Torques in End-milling Operation

  TATEKAWA Muneharu, NISHIDA Isamu, SATO Ryuta, SHIRASE Keiichi

  エンドミル加工を対象に,シミュレーションで予測できる切削トルクと主軸モータから検出できる切削トルクを比較し,加工異常を検出する方法を提案する.加工中に加工状態が変化しても切削トルクの増大割合から工具摩耗を検出できることを確認し,また切削トルク波形のモニタリング結果とシミュレーション結果の類似度の変化から工具欠損を検出できることを確認した.

  The Japan Society of Mechanical Engineers, 2017, The Proceedings of Manufacturing Systems Division Conference, 2017(0) (0), 309 - 309, Japanese

  [Refereed]


• Time Domain Coupled Simulation of Machine Tool Dynamic Behavior and Cutting Force using Voxel Model Cutting Force Simulator

  Noguchi Shin, Nishida Isamu, Sato Ryuta, Shirase Keiichi

  切削力は送り駆動系や主軸駆動系に外乱として作用し，断続切削では送り速度や主軸回転数の変動や機械の構造振動を励起するとともに，その振動で一刃当たりの送り量や切削速度が変動して切削力も変化する．本研究では主軸駆動系と送り駆動系の運動および機械の構造振動と切削力との連成シミュレーション技術を開発し，切削力により駆動系が振動し，それにより切削力が変動する現象を開発した方法で表現できることを確認した．

  The Japan Society for Precision Engineering, 2017, Proceedings of JSPE Semestrial Meeting, 2017(0) (0), 65 - 66, Japanese

  [Refereed]


• 工具の静変形を考慮したエンドミル加工の切削加工シミュレーション

  奥村 龍馬, 西田 勇, 佐藤 隆太, 白瀬 敬一

  加工中の切削力を推定し，切削力による工具の静変形を予測可能なシミュレータを開発した．このシミュレータは被削材のボクセルモデルを用いて，工具微小回転角ごとに実切込み厚さを計算して切削力を推定する．推定した切削力から工具変形および工具把持部の並進変形量を予測した．実加工による加工面とシミュレーションで予測した加工面を比較して，工具の静変形を考慮した切削加工シミュレーションの有効性を確認した．

  公益社団法人 精密工学会, 2017, 精密工学会学術講演会講演論文集, 2017(0) (0), 999 - 1000, Japanese

  [Refereed]


• CUTTING FORCE PREDICTION OF BALL END MILLING BASED ON FULLY VOXEL REPRESENTATION OF CUTTING EDGE AND INSTANTANEOUS WORKPIECE SHAPE

  Isamu Nishida, Ryuma Okumura, Ryuta Sato, Keiichi Shirase

  2017, PROCEEDINGS OF THE ASME 12TH INTERNATIONAL MANUFACTURING SCIENCE AND ENGINEERING CONFERENCE - 2017, VOL 3, English

  [Refereed]

  International conference proceedings


• MACHINING OPERATION PROCESS PLANNING SYSTEM CONSIDERING USER STRATEGIES AND INTENTIONS

  Taishi Hirai, Isamu Nishida, Ryuta Sato, Keiichi Shirase

  2017, PROCEEDINGS OF THE ASME 12TH INTERNATIONAL MANUFACTURING SCIENCE AND ENGINEERING CONFERENCE - 2017, VOL 3, English

  [Refereed]

  International conference proceedings


• Proposal of Process Planning System for End-Milling Operation Considering Product Design Constraints

  Nishida Isamu, Sato Ryuta, Shirase Keiichi

  A new method of the process planning for end-milling operation considering product design constraints in this study. In our previous study, the process planning system, in which the Total Removal Volume is divided by the planes parallel with the XY, YZ or ZX planes to analyze machining sequence from top to bottom of the target product, is proposed. In this study, the process planning system, in which the Total Removal Volume is divided by all planes (including slope planes) existing on the target product, is proposed. Furthermore, the product design constraints or the designer's intention such as separate through holes which have the same central axis to be slide bearing is considered. A case study was conducted and the result showed that the proposed method can generate efficient multiple process plans for the machining operation. These multiple process plans or machining sequences are available to select adaptively the most suitable process plan or machining sequence under the several conditions such as the machine tool to be used and the product design constructions.

  THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE), 2017, Transactions of the Institute of Systems, Control and Information Engineers, 30(3) (3), 81 - 86, Japanese

  [Refereed]

  Scientific journal


• Time domain coupled simulation of machine tool dynamic behaviour and cutting force based on voxel simulator of machining operation

  NOGUCHI Shin, NISHIDA Isamu, SATO Ryuta, SHIRASE Keiichi

  It is known that the cutting force excites the structural vibration of machine tool. In addition, cutting force acts on feed and spindle drive system as a force disturbance, and feed speed and spindle speed are changed. As the results, cutting force is also changed because the depth of cut and cutting speed are changed due to the machine vibration, feed and spindle speed changes. The purpose of this study is to analyze the coupled vibration between the machine tool behavior and the cutting force. In order to achieve the purpose, in this study, a coupled simulation method of the vibration of machine tool, the dynamic behaviors of feed and spindle drive systems and the cutting force is developed. Cutting force and machined surface geometry is simulated using the voxel simulator in which the workpieces is represented by voxels. Undeformed chip thickness can be calculated based on the relative position between the tool and workpieces, and the tool rotational angle at the each time step based on the voxel model. The cutting force is estimated based on the calculated undeformed chip thickness. The relative position between tool and workpiece at each time step is simulated by the feed drive system and machine tool structural models. The tool rotational angle is simulated by the spindle drive system model. The coupled simulation between the cutting force, structural vibration of machine tool and feed and spindle drive systems is carried out by applying the simulated cutting force and cutting torque as a disturbance to the feed and spindle drive systems and machine tool structure. Cutting tests and simulations are carried out with two kinds of radial depth of cut, 5 mm and 20 mm. It is confirmed that the machine tool dynamic behaviors due to the cutting force and torque which is also influenced by the machine tool behaviors can be simulated by the proposed method. It is also confirmed that the chatter vibration which is observed in case of the 20 mm depth of cut can be simulated by the proposed method.

  The Japan Society of Mechanical Engineers, 2017, Transactions of the JSME (in Japanese), 83(856) (856), 17 - 00254-17-00254, Japanese

  [Refereed][Invited]

  Scientific journal


• Instantaneous rigid force model based on oblique cutting to predict milling force

  KANEKO Kazuki, NISHIDA Isamu, SATO Ryuta, SHIRASE Keiichi

  In end milling, in order to improve machining efficiency and accuracy, instantaneous rigid force model is widely used to predict cutting force and improve cutting conditions. The instantaneous rigid force model is well known as the practically simple model to predict cutting force. However this model requires the six parameters called cutting coefficients which have to be determined by the experimental milling operation. So several experimental milling operations are needed before cutting force prediction. In this study, a new instantaneous rigid force model based on oblique cutting is proposed. In this force model, the end milling process is modeled using the oblique cutting model. Therefore, cutting force prediction can be realized using only the one parameter such as shear angle instead of the six parameters such as cutting coefficients required for a conventional instantaneous rigid force model. The shear angle can be determined from tangential milling force or milling torque. And this force model is easier to apply for practical cutting force prediction, because time and effort to determine the parameter(s) before cutting force prediction. The validation of this force model compared with the conventional force model is performed. As the result, cutting forces predicted by the proposed force model has good agreement with the measured cutting forces. Also, the proposed force model has good performance in a wide range of cutting conditions compared with the conventional force model.

  The Japan Society of Mechanical Engineers, 2017, Transactions of the JSME (in Japanese), 83(856) (856), 17 - 00247-17-00247, Japanese

  [Refereed]

  Scientific journal


• 被削材のボクセルモデルによるボールエンドミルの工具姿勢変化を考慮した5軸加工の切削力シミュレーション

  NISHIDA ISAMU, 奥村 龍馬, SATO RYUTA, SHIRASE KEIICHI

  Nov. 2016, 型技術ワークショップ2016 in なにわ講演論文, 46 - 47, Japanese

  Research society


• CAM-CNC統合による革新的な知能化工作機械の開発

  NISHIDA ISAMU, SATO RYUTA, SHIRASE KEIICHI

  Nov. 2016, 第17回国際工作機械技術者会議論文集, 116 - 117, Japanese

  Research society


• 切削トルクの予測結果と実測結果の比較に基づく加工異常検出システムの提案

  立川 宗治, NISHIDA ISAMU, SATO RYUTA, SHIRASE KEIICHI

  砥粒加工学会, Aug. 2016, 2016年度砥粒加工学会学術講演会(ABTEC2016)講演論文集, A03 - A03, Japanese

  [Refereed]

  Research society


• 被削材のボクセルモデル表現によるボールエンドミル加工の切削力推定

  奥村 龍馬, NISHIDA ISAMU, SATO RYUTA, SHIRASE KEIICHI

  Jul. 2016, 精密工学会2016年度関西地方定期学術講演会講演論文集, 32 - 33, Japanese

  [Refereed]

  Research society


• 歯科補綴物の一貫加工システムの開発

  津山 椋, NISHIDA ISAMU, SATO RYUTA, SHIRASE KEIICHI

  Jul. 2016, 精密工学会2016年度関西地方定期学術講演会講演論文集, 34 - 35, Japanese

  [Refereed]

  Research society


• Extension of a dynamical model of muscle activation, fatigue and recovery for estimation of muscle fatigue and recovery (1st report - validation with grapping state)

  NISHIDA ISAMU, MAEDA MASATO, KAWANO TSUNEO, SHIRASE KEIICHI

  For several decades, factory automation or unmanned factory productivity has been progressed to realize much higher productivity in manufacturing. However, human centered manufacturing system is getting attention to realize much more flexibility for manufacturing of wide product variety and volume. So it is necessary to provide the safe and efficient environment to workers considering their own physical properties. This study investigated a mechanism of muscle fatigue and proposed a muscular fatigue model to evaluate muscle fatigue progress under several muscular force patterns. Previous studies have already proposed a muscular fatigue model. However, these previous studies discussed about the condition of maximum voluntary contraction. The new point of this study is considering several muscular force patterns including muscle recovery progress. This study proposed the method to estimate the endurance times for keeping constant forces considering the physical characteristics. This study also proposed the method to estimate the iteration numbers for keeping constant forces with interval. To validate the effectiveness of the proposed method, experimental verifications were conducted. The experimental results had a good agreement with the evaluation of muscle fatigue progress using the proposed method although it is necessary to consider the method to raise the precision of determining the physical parameters and the method to decrease the dispersion of experiments derived from the subjective judgement of participants. Success of resolving these issues will provide ergonomically safe and efficient working environments considering the physical properties of each worker.

  The Japan Society of Mechanical Engineers, Jul. 2016, 日本機械学会, 82(840) (840), 1600006 - 1600006, Japanese

  [Refereed]

  Scientific journal


• Method of Movement Simulation in Lifting Operation Considering the Role of Antagonistic Muscles and Biarticular Muscle

  NISHIDA ISAMU, MAEDA MASATO, KAWANO TSUNEO, SHIRASE KEIICHI

  Mar. 2016, Journal of Ergonomics, 6(2) (2), 100158 - 1000158, English

  [Refereed]

  Scientific journal


• PROCESS PLANNING SYSTEM OF 5-AXIS MACHINING CENTER CONSIDERING CONSTRAINT CONDITION

  Isamu Nishida, Ryuta Sato, Keiichi Shirase

  2016, 2016 INTERNATIONAL SYMPOSIUM ON FLEXIBLE AUTOMATION (ISFA), 2016(ISFA) (ISFA), 352 - 355, English

  [Refereed]

  International conference proceedings


• Adaptive correction method of cutting conditions in machining operation planning which refers past machining cases:(2^nd Report: Expanded correction method by qualified relaxation of machining requirements)

  HORIMOTO Ryosuke, NISHIDA Isamu, SATO Ryuta, SHIRASE Keiichi

  A new methodology to revise cutting conditions for machining operation planning has been developed in this study. In order to automate machining operation planning, reuse of cutting conditions in the past machining operations was proposed in our previous study. However, assessment and revision of cutting conditions are required to apply for the objective machining operation from the reference machining operation. For the assessment of cutting conditions, an acceptable area to select cutting conditions (AACC) is calculated. The AACC can be calculated under several limitations such as spindle power and maximum feed speed of machine tools, torsional and bending strength of cutting tools and so on. In the case that the reference cutting condition stays in the AACC, the reference cutting condition can be applied for the objective machining operation without any revision. In the case that the reference cutting condition stays out the AACC, the reference cutting condition should be revised to adapt for the objective machining operation. In our study, a methodology, which revises cutting conditions under keeping productivity, surface roughness (cusp height) and tool life, was proposed. In this report, an expanded methodology to revise cutting conditions by qualified relaxation of machining requirements is proposed to achieve wide range adaptation of the reference cutting conditions to the objective machining operation.

  The Japan Society of Mechanical Engineers, 2016, The Proceedings of Mechanical Engineering Congress, Japan, 2016(0) (0), S1320203 - S1320203, Japanese

  [Refereed]

  Research society


• A new end-milling force prediction method based on oblique cutting model

  Kaneko Kazuki, Nishida Isamu, Sato Ryuta, Shirase Keiichi

  Instantaneous cutting force model is widely used for the cutting force prediction for end milling operation. However this model is required to prepare 6 parameters called cutting coefficients which can be determined from experimentally measured cutting forces. In this study, a new end-milling force prediction method based on oblique cutting model is proposed. This method can predict cutting force using only the experimentally predetermined shear angle instead of 6 cutting coefficients required for a conventional instantaneous cutting force model. This method is easier to apply for practical cutting force prediction, because it is easier to predetermine shear angle than 6 cutting coefficients.

  The Japan Society of Mechanical Engineers, 2016, The Proceedings of The Manufacturing & Machine Tool Conference, 2016(0) (0), D18 - 206, Japanese

  Research society


• Estimation Method of Muscle Fatigue and Recovery Progress Using a Muscular Fatigue Model

  Isamu Nishida, Kazuya Sata, Masato Maeda, Tsuneo Kawano, Keiich Shirase

  2016, ADVANCES IN PHYSICAL ERGONOMICS AND HUMAN FACTORS, 489, 515 - 525, English

  [Refereed]

  International conference proceedings


• Estimation method of muscle forces of lower limb considering the role of antagonistic muscles and biarticular muscles –Estimation of muscle forces of lower limb during 3-dimensional jogging–

  NISHIDA ISAMU, D. Gordon, E. Robertson, MAEDA MASATO, KAWANO TSUNEO, SHIRASE KEIICHI

  Jan. 2012, 日本人間工学会, 48(2) (2), 62 - 69, Japanese

  [Refereed]

  Scientific journal


• Estimation Method of Muscle Forces of Lower Limb Considering the Role of Antagonistic Muscles and Biarticular Muscles －Estimation of Muscle Forces of Lower Limb during Vertical Jumping－

  NISHIDA ISAMU, MAEDA MASATO, KAWANO TSUNEO, SHIRASE KEIICHI

  Sep. 2011, 日本人間工学会, 47(6) (6), 244 - 251, Japanese

  [Refereed]

  Scientific journal


• Estimation of Ground Reaction Forces during Walking

  NISHIDA ISAMU, D. Gordon, E. Robertson, MAEDA MASATO, KAWANO TSUNEO, SHIRASE KEIICHI

  Jun. 2011, Biomechanics in Sports, 11(2) (2), 547 - 550, English

  [Refereed]

  Scientific journal


• Development of an ergonomic musculoskeletal model to estimate muscle forces during vertical jumping

  Isamu Nishida, Masato Maeda, D. Gordon, E. Robertson, Keiichi Shirase

  2011, 5TH ASIA-PACIFIC CONGRESS ON SPORTS TECHNOLOGY (APCST), 13, 338 - 343, English

  [Refereed]

  International conference proceedings


• B30 Lower limbs muscular power in vertical jump estimated by human musculo-skeletal model considering bi-articular muscle function

  NISHIDA Isamu, SAKAGUCHI Tatsuhiko, MAEDA Masato, SHIRASE Keiichi

  The analysis and clarification of man's physical properties are very important in the field of sport and welfare engineering. The results of these analysis and clarification contribute to the improvement of physical ability, the prevention of injury in sports, the effective rehabilitation and the evaluation of dynamic load in daily life. The solid body link model, which has been used for the analysis on human body performance, can estimate the force and torque which acts on each joint from the recorded human motion. However, the muscle functionality is not considered in the solid body link model. In order to evaluate the muscular power during human motion, the human musculo-skeletal model considering bi-articular muscle function is required. In this study, the basic two dimensional musculo-skeletal model of man's lower limb was constructed and the muscular power of each effective muscle was estimated from the recorded human motion. The lower limbs muscular power in vertical jump is estimated to verify the musculo-skeltal model constructed.

  The Japan Society of Mechanical Engineers, 2008, The Proceedings of Joint Symposium: Symposium on Sports Engineering, Symposium on Human Dynamics, 2008, 335 - 340, Japanese

• B9 Proposal of muscular fatigue model to evaluate muscle fatigue progress under several muscular force patterns

  SATA Kazuya, NISHIDA Isamu, KAWANO Tsuneo, SHIRASE Keiichi

  For several decades, factory automation or unmanned factory productivity has been progressed to realize much higher productivity in manufacturing. However, human centered manufacturing system is getting attention to realize much more flexibility for manufacturing of wide product variety and volume. In this study, a mechanism of muscle fatigue is investigated, and a muscular fatigue model to evaluate muscle fatigue progress under several muscular force patterns is proposed. Furthermore, the endurance time for keeping constant force by the participant is estimated considering physical characteristics of the participant. In order to show the effectiveness of the proposed method, experimental verifications were conducted. The experimental results had a good agreement with the evaluation of muscle fatigue progress using the proposed method. The proposed model contributes to evaluate the ergonomic working environments and the comfortable working motions.

  The Japan Society of Mechanical Engineers, 30 Oct. 2011, Symposium on sports and human dynamics, 2011, 298 - 302, Japanese


• B33 A study on the starting techniques at the clearance from blocks on crouch start

  SHINOHARA Yasuo, NISHIDA Isamu, MAEDA Masato

  In the sprint, the sprinters are required to use starting blocks at the crouch start. Therefore, it is important to clarify the technique of block clearance in order to improve sprint performance. The purpose of this study is to examine the technique of block clearance from joint torque and joint power in lower extremity applied to the starting blocks by sprinters. From starting blocks, six sprinters did the "starting dash" as is done in a sprint running race, and the forces applied to the right and left starting block were measured by with the force plates (1kHz). And, the block clearance movement was recorded by Hi-speed camera (250Hz). The results can be summarized as follows. There were two different patterns about the joint torque and power applied to the rear block. The type of pushing the rear block was presumed to have exhibited the extension torque and power at the hip and ankle of the rear leg. On the other hand, the type of pulling the rear leg from the rear block was presumed to have exhibited the flexion torque at the hip and the extension torque and power at the knee and ankle of the rear leg.

  The Japan Society of Mechanical Engineers, 30 Oct. 2011, Symposium on sports and human dynamics, 2011, 412 - 417, Japanese


• B11 Validation of muscle forces during standing long jumping estimated by a musculoskeletal model considering antagonistic muscles and biarticular muscles

  NISHIDA Isamu, MAEDA Masato, KAWANO Tsuneo, SHIRASE Keiichi

  Estimation of muscle forces during human motions is important in the fields of sport, ergonomics and bioengineering in order to improve sport techniques, rehabilitation procedures, product designs and work environments, and so on. In general, in the musculoskeletal models that have been developed, the functions of antagonistic muscles and biarticular muscles are not considered to estimate muscle forces. In this study, a musculoskeletal model that considered the functions of the antagonistic muscles and biarticular muscles was investigated. In this model, muscles acting across the hip, knee and ankle joints were treated simultaneously. Furthermore, in this study, standing long jump as dynamic motion was conducted to validate the proposed model to estimate muscle forces. Surface electromyograms (EMGs) of tibialis anterior, gastrocnemius, soleus, rectus femoris, vastus lateralis, semimembranosus, biceps femoris and short head and gluteus maximus were measured to compare with the estimated muscle forces. The experimental results showed that the muscle forces estimated by the proposed method had a good agreement with the EMGs of muscles.

  The Japan Society of Mechanical Engineers, 30 Oct. 2011, Symposium on sports and human dynamics, 2011, 309 - 314, Japanese


• A study on improving performance in vertical jump motion considering bi-articular muscle function

  Isamu Nishida, Masato Maeda, Tsuneo Kawano, Keiichi Shirase

  2010, ENGINEERING OF SPORT 8: ENGINEERING EMOTION - 8TH CONFERENCE OF THE INTERNATIONAL SPORTS ENGINEERING ASSOCIATION (ISEA), 2(2) (2), 3463 - 3463, English

  Summary international conference

• Influence of Non-linear Friction Characteristics of Linear Guide and Ball Screw in Milling Operation

  SATO RYUTA, NOGUCHI SHIN, NISHIDA ISAMU, SHIRASE KEIICHI

  8th International Conference on Virtual Machining Process Technology, Apr. 2019, English, CIRP, Vancouver, International conference

  Oral presentation


• 切削シミュレータを統合したエンドミル加工用CAMの開発

  西田 勇, 白瀬 敬一

  型技術者会議2019, 2019, Japanese, Domestic conference

  Oral presentation


• Automated measuring planning for on-machinine measurement and re-machining process

  Murase Motoaki, Nishida Isamu, Sato Ryuta, Shirase Keiichi

  14th International Manufacturing Science and Engineering Conference, 2019, English, International conference

  Oral presentation


• Enhancement of Motion Accuracy for Cone-frustum Cutting Motion by Modified NC Program

  MORISHITA KIICHI, SATO RYUTA, SHIRASE KEIICHI, NISHIDA ISAMU

  the ASME 2018 Manufacturing Science and Engineering Conference, Jun. 2018, English, ASME, Colleage Station, International conference

  Oral presentation


• 熟練者のノウハウを反映した工具経路自動生成

  西田 勇, 白瀬 敬一

  第18回国際工作機械技術者会議, 2018, Japanese, Domestic conference

  Poster presentation


• 作業設計を考慮したエンドミル加工用自動工程設計システム（工具交換回数を最小化する工程設計）

  西田 勇, 白瀬 敬一

  日本機械学会2018年度年次大会, 2018, Japanese, Domestic conference

  Oral presentation


• 機械加工用自動工程設計におけるユーザの意図を反映した工程案の導出

  平井大志, 西田 勇, 佐藤 隆太, 白瀬 敬一

  日本機械学会生産システム部門研究発表講演会, 2018, Japanese, Domestic conference

  Oral presentation


• 機械加工部品の設計情報を利用した機上計測の自動化

  村瀬元章, 西田 勇, 佐藤 隆太, 白瀬 敬一

  精密工学会第25回学生会員卒業研究発表講演会, 2018, Japanese, Domestic conference

  Oral presentation


• ロボットによる板金曲げ加工の自律作業を実現する曲げ順序計画および動作経路生成の自動化

  宮村俊稀, 西田 勇, 佐藤 隆太, 白瀬 敬一

  日本機械学会関西支部第93期定時総会講演会, 2018, Japanese, Domestic conference

  Oral presentation


• ボールエンドミル先端部の切削抵抗を考慮した切削力シミュレーション

  中村貴也, 西田 勇, 佐藤 隆太, 白瀬 敬一

  日本機械学会関西支部2017年度学生員卒業研究発表講演会, 2018, Japanese, Domestic conference

  Oral presentation


• エンドミル加工における工具系の弾性変形の予測結果に基づく加工誤差補正法

  西田 勇, 白瀬 敬一

  精密工学会2018年度秋季大会学術講演会, 2018, Japanese, Domestic conference

  Poster presentation


• Voxel based cutting force simulation of ball end milling considering cutting edge around ceter web

  Nishida Isamu, Nakamura Takaya, Sato Ryuta, Shirase Keiichi

  13th International Manufacturing Science and Engineering Conference, 2018, English, International conference

  Oral presentation


• Virtual milling force monitoring method based on in-process milling force prediction model to eliminate predetermination of cutting coefficients

  Kazuki Kaneko, Nishida Isamu, Sato Ryuta, Shirase Keiichi

  8th CIRP Conference on High Performance Cutting, 2018, English, International conference

  Oral presentation


• Tool chipping detection based on spindle motor torque distortion in end-milling

  Kaneko Kazuki, Nishida Isamu, Sato Ryuta, Shirase Keiichi

  17th International Conference on Precision Engineering, 2018, English, International conference

  Oral presentation


• NCプログラムの自動生成と加工時間予測で実現する製品形状に応じた工作機械の割当て

  西田 勇, 白瀬 敬一

  型技術ワークショップ2018 in ふくい, 2018, Japanese, Domestic conference

  Oral presentation


• Muscle force prediction method considering the role of antagonistic muscle

  Daiju Yuki, Nishida Isamu, Sato Ryuta, Shirase Keiichi

  9th International Conference on Applied Human Factors and Ergonomics, 2018, English, International conference

  Oral presentation


• Cutting Force and Finish Surface Simulation of End Milling Operation in Consideration of Static Tool Deflection by Using Voxel Model

  Nishida Isamu, Okumura Ryuma, Sato Ryuta, Shirase Keiichi

  8th CIRP Conference on High Performance Cutting, 2018, English, International conference

  Oral presentation


• CAM操作を必要としない歯科補綴物の自律加工

  津山椋, 西田 勇, 佐藤 隆太, 白瀬 敬一

  日本機械学会関西支部第93期定時総会講演会, 2018, Japanese, Domestic conference

  Oral presentation


• Automation of on-machine measurement based on 3D CAD model of product

  Murase Motoaki, Nishida Isamu, Sato Ryuta, Shirase Keiichi

  2018 International Symposium on Flexible Automation, 2018, English, International conference

  Oral presentation


• Automatic process planning system for end-milling operation reflecting CAM operator’s intentnion

  Nishida Isamu, Hirai Taishi, Sato Ryuta, Shirase Keiichi

  2018 International Symposium on Flexible Automation, 2018, English, International conference

  Oral presentation


• Determination of Cutting Conditions for NC Program Generation by Reusing Machining Case Data based on Removal Volume Feature

  NISHIDA ISAMU, SATO RYUTA, SHIRASE KEIICHI

  9th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), Nov. 2017, English, JSME, 広島市, International conference

  Oral presentation


• Coupled Simulation between Machine Tool Behavior and Cutting Force using Voxel Simulator

  NOGUCHI SHIN, SATO RYUTA, NISHIDA ISAMU, SHIRASE KEIICHI

  9th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), Nov. 2017, English, JSME, Hiroshima, International conference

  Oral presentation


• A revised instantaneous rigid force model for end-milling operation to eliminate predetermination of cutting coefficients

  KANEKO KAZUKI, NISHIDA ISAMU, SATO RYUTA, SHIRASE KEIICHI

  9th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), Nov. 2017, English, JSME, 広島市, International conference

  Oral presentation


• ボクセルモデルを用いた切削力シミュレータによる工作機械の動的挙動と切削力の時間領域連成シミュレーション

  NOGUCHI SHIN, NISHIDA ISAMU, SATO RYUTA, SHIRASE KEIICHI

  2017年度精密工学会秋季大会学術講演会, Sep. 2017, Japanese, 豊中市, Domestic conference

  Oral presentation


• 冗長筋群を考慮した筋骨格モデルによる筋力推定

  第十 祐幹, 西田 勇, 白瀬 敬一

  日本機械学会シンポジウム：スポーツ工学・ヒューマンダイナミクス2017, 2017, Japanese, Domestic conference

  Oral presentation


• 工具切れ刃形状および被削材形状のボクセルモデルによるラジアスエンドミルの切削力シミュレーション

  西田 勇, 奥村 龍馬, 佐藤 隆太, 白瀬 敬一

  自動車技術会2017年春季大会学術講演会, 2017, Japanese, Domestic conference

  Oral presentation


• 工具の静変形を考慮したエンドミル加工の切削加工シミュレーション

  奥村 龍馬, 西田 勇, 佐藤 隆太, 白瀬 敬一

  精密工学会2017年度秋季大会学術講演会, 2017, Japanese, Domestic conference

  Oral presentation


• ロボットによる板金曲げ加工のための工程設計および作業設計の自動化

  宮村 俊稀, 西田 勇, 佐藤 隆太, 白瀬 敬一

  密工学会2017年度関西地方定期学術講演会, 2017, Japanese, Domestic conference

  Poster presentation


• ユーザの戦略や意図を考慮した機械加工用工程設計支援システムの開発

  平井 大志, 西田 勇, 佐藤 隆太, 白瀬 敬一

  密工学会2017年度関西地方定期学術講演会, 2017, Japanese, Domestic conference

  Poster presentation


• スクエアエンドミル加工における工具摩耗予測手法

  笠谷 和樹, 西田 勇, 佐藤 隆太, 白瀬 敬一

  密工学会2017年度関西地方定期学術講演会, 2017, Japanese, Domestic conference

  Poster presentation


• エンドミル加工における切削トルクの予測結果と実測結果の定量比較による加工異常検出

  立川 宗治, 西田 勇, 佐藤 隆太, 白瀬 敬一

  日本機械学会生産システム部門研究発表講演会2017, 2017, Japanese, Domestic conference

  Oral presentation


• Machining operation process planning system considering user strategies and intentions

  Hirai Taishi, Nishida Isamu, Sato Ryuta, Shirase Keiichi

  ASME 2017 12th International Manufacturing Science and Engineering Conference, 2017, English, International conference

  Oral presentation


• Cutting force prediction of ball end milling based on fully voxel representation of cutting edge and instantaneous workpiece shape

  Nishida Isamu, Okumura Ryuma, Sato Ryuta, Shirase Keiichi

  ASME 2017 12th International Manufacturing Science and Engineering Conference, 2017, English, International conference

  Oral presentation


• CAM-CNC統合による革新的な工作機械の知能化 –試作版の実装と評価-

  西田 勇, 白瀬 敬一, 尾西 雅弘, 小嵐 勝幸

  型技術ワークショップ2017 in 岡山, 2017, Japanese, Domestic conference

  Oral presentation


• 被削材のボクセルモデル表現によるボールエンドミル加工の切削力推定

  奥村 龍馬, 西田 勇, 佐藤 隆太, 白瀬 敬一

  精密工学会2016年度関西地方定期学術講演会, 2016, Japanese, Domestic conference

  Poster presentation


• 被削材のボクセルモデルによるボールエンドミルの工具姿勢変化を考慮した5軸加工の切削力シミュレーション

  西田 勇, 佐藤 隆太, 白瀬 敬一

  型技術ワークショップ2016 in なにわ, 2016, Japanese, Domestic conference

  Oral presentation


• 切削トルクの予測結果と実測結果の比較に基づく加工異常検出システムの提案

  立川 宗治, 西田 勇, 佐藤 隆太, 白瀬 敬一

  2016年度砥粒加工学会学術講演会, 2016, Japanese, Domestic conference

  Oral presentation


• 疾走時の地面反力の推定に関する研究

  岡野 達哉, 西田 勇, 前田 正登

  日本機械学会シンポジウム：スポーツアンド・ヒューマンダイナミクス2016, 2016, Japanese, Domestic conference

  Oral presentation


• 歯科補綴物の一貫加工システムの開発

  津山 椋, 西田 勇, 佐藤 隆太, 白瀬 敬一

  精密工学会2016年度関西地方定期学術講演会, 2016, Japanese, Domestic conference

  Poster presentation


• 傾斜切削理論に基づくエンドミル加工の切削力予測モデルの提案

  金子 和暉, 西田 勇, 佐藤 隆太, 白瀬 敬一

  日本機械学会第11回生産加工・工作機械部門講演会, 2016, Japanese, Domestic conference

  Oral presentation


• 加工事例を参照する作業設計における切削条件の適応的修正法（第2報：制約条件緩和による切削条件修正法の拡張）

  堀本 凌輔, 西田 勇, 佐藤 隆太, 白瀬 敬一

  日本機械学会2016年度年次大会, 2016, Japanese, Domestic conference

  Oral presentation


• Process Planning System of 5-Axis Machining Center Considering Constraint Condition

  Nishida Isamu, Sato Ryuta, Shirase Keiichi

  2016 International Symposium on Flexible Automation, 2016, English, International conference

  Oral presentation


• CAM-CNC統合による革新的な知能化工作機械の開発

  西田 勇, 佐藤 隆太, 白瀬 敬一

  第17回国際工作機械技術者会議, 2016, Japanese, Domestic conference

  Poster presentation


• CAM-CNC統合による革新的な工作機械の知能化 -切削力の予測結果に基づく適応制御-

  西田 勇, 白瀬 敬一, 尾西 雅弘, 小嵐 勝幸

  型技術ワークショップ2016 in なにわ, 2016, Japanese, Domestic conference

  Oral presentation


• 立幅跳びにおける拮抗筋及び二関節筋を考慮した下肢筋力の推定手法の検証

  西田 勇, 前田 正登, 川野常夫, 白瀬 敬一

  日本機械学会シンポジウム：スポーツアンド・ヒューマンダイナミクス2011, 2011, Japanese, Domestic conference

  Oral presentation


• 短距離走クラウチングスタートにおけるブロッククリアランス技術

  篠原 康男, 西田 勇, 前田 正登

  日本機械学会シンポジウム：スポーツアンド・ヒューマンダイナミクス2011, 2011, Japanese, Domestic conference

  Oral presentation


• 筋肉の疲労進展を評価する筋疲労モデルの提案

  佐田 和也, 西田 勇, 川野常夫, 白瀬 敬一

  日本機械学会シンポジウム：スポーツアンド・ヒューマンダイナミクス2011, 2011, Japanese, Domestic conference

  Oral presentation


• Validation of muscle forces during jogging estimated with an ergonomic musculoskeletal model

  Nishida Isamu, D. Gordon, E. Robertson, Maeda Masato, Kawano Tsuneo, Shirase Keiichi

  International Society of Biomechanics 2011, 2011, English, International conference

  Oral presentation


• Development of an ergonomic musculoskeletal model to estimate muscle forces during vertical jumping

  Nishida Isamu, D. Gordon, E. Robertson, Maeda Masato, Kawano Tsuneo, Shirase Keiichi

  5th Asia-Pacific Congress on Sports Technology, 2011, English, International conference

  Oral presentation


• Optimization of Lifting Posture Based on Motion Analysis Using Musculoskeletal Human Model Considering Bi-articular Muscle Function

  Nishida Isamu, Maeda Masato, Kawano Tsuneo, Shirase Keiichi

  2010 Asian Conference on Design and Digital Engineering, 2010, English, International conference

  Oral presentation


• A study on improving performance in vertical jump motion considering bi-articular muscle function

  Nishida Isamu, Maeda Masato, Kawano Tsuneo, Shirase Keiichi

  8TH CONFERENCE OF THE INTERNATIONAL SPORTS ENGINEERING ASSOCIATION (ISEA), 2010, English, International conference

  Poster presentation


• Lower Limbs Muscular Power In Vertical Jump Estimated By Human Musculo-Skeletal Model Considering Bi-Articular Muscle Function

  NISHIDA ISAMU, MAEDA MASATO, SHIRASE KEIICHI

  4th Asia-Pacific Congress on Sports Technology, Sep. 2009, English, International conference

  Oral presentation


• 作業評価に用いる二関節筋を考慮した筋骨格モデルの研究

  西田 勇, 前田 正登, 川野常夫, 白瀬 敬一

  精密工学会2009年度秋季大会, 2009, Japanese, Domestic conference

  Oral presentation


• 二関節筋を考慮した筋骨格モデルを用いた垂直跳びにおける下肢筋力の推定

  西田 勇, 阪口 龍彦, 前田 正登, 白瀬 敬一

  日本機械学会シンポジウム：スポーツアンド・ヒューマンダイナミクス2008, 2008, Japanese, Domestic conference

  Oral presentation

• 切削による一品生産の自動化を志向したCAMシステムに関する研究

  西田 勇

  日本学術振興会, 科学研究費助成事業 基盤研究(C), 基盤研究(C), 神戸大学, Apr. 2022 - Mar. 2025, Principal investigator


• 工作機械の特性と切削力の動的連成挙動の解明

  佐藤 隆太

  科学研究費補助金／基盤研究(B), Apr. 2018 - Mar. 2021

  Competitive research funding


• 任意の空間分解能と時間分解能で連成解析を行うための切削加工シミュレータの開発

  白瀬 敬一

  科学研究費補助金／基盤研究(B), Apr. 2017 - Mar. 2020

  Competitive research funding


• 筋肉の疲労状態を考慮した作業負荷予測が可能なデジタルヒューマンモデルの開発

  西田 勇

  学術研究助成基金助成金／若手研究(B), Apr. 2017 - Mar. 2019, Principal investigator

  Competitive research funding

• 形状認識装置，および形状認識方法

  西田勇

  特願2020-085466, 14 May 2020

  Patent right


• NCデータ生成装置，およびNCデータ生成プログラム

  西田勇, 中辻秀憲

  特願2019-226707, 16 Dec. 2019

  Patent right


• NCデータ変更装置，およびNCデータ変更プログラム

  西田 勇

  特願2019-169667, 18 Sep. 2019

  Patent right


• 生産計画策定装置，生産計画策定プログラム，および生産計画策定方法

  西田 勇

  特願2019-121418, 28 Jun. 2019

  Patent right


• 加工シミュレーションシステム，および加工シミュレーションプログラム

  西田 勇

  特願2019-094659, 20 May 2019

  Patent right


• 工程設計システム，および加工順序決定方法

  西田 勇

  特願2018-084733, 26 Apr. 2018

  Patent right


• 切削シミュレーション方法および装置

  西田 勇

  特願2017-196099, 06 Oct. 2017

  Patent right


• 加工支援システム

  西田 勇

  特願2017-043061, 07 Mar. 2017

  Patent right


• 加工支援システム

  西田 勇

  特願2016-243789, 15 Dec. 2016

  Patent right


• 工程設計支援システム、および、工程設計支援方法

  西田 勇

  特願2016-114701, 08 Jun. 2016

  Patent right