著者

河合 貴未央 Beaucamp Anthony 今泉 紀幸 櫻井 正俊 竹内 芳美

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 (ISSN:21879761)

巻号頁・発行日

vol.83, no.855, pp.17-00162-17-00162, 2017 (Released:2017-11-25)

参考文献数

11

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In recent years, the drill used to make holes is expected to exert both high machining accuracy and good processing capability. In order to meet those requirements, it is necessary to develop a new drill shape with good properties requested by designers. There is a strong need for a new system to shorten the drill fabrication time, to reduce material costs, and to create new drill configurations by predicting their characteristics. Current drill shape prediction systems cannot comprehensively and mathematically treat drill cross-section shape including the cutting edge, groove and so on. The prediction system would become more practical if the drill specification was mathematically formulated. This study reports the development of a system to predict not only the cross-sectional shape but also various parameters from the information of grinding wheels used in drill fabrication. Furthermore, this study proposes the new system to predict the most suitable grinding wheel setting from the grinding wheel shape and some drill specifications as the reverse process.

著者

竹内 芳美 清水 弘幸 出村 健 渡辺 隆弘 伊藤 哲也

出版者

公益社団法人精密工学会

雑誌

精密工学会誌 (ISSN:09120289)

巻号頁・発行日

vol.56, no.11, pp.2063-2068, 1990-11-05

被引用文献数

3 7

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The study deals with 5-axis control machining of workpieces with sculptured surface like impellers. The 5-axis control machining allows complex workpieces to be produced efficiently and accurately. Then, it is of importance to avoid the collision between tool and workpiece due to the arbitrariness of tool attitude. The system developed in the study generates the collision-free tool path for workpieces with sculptured surface, based on the CAD/CAM system employing the solid modeling techniques. As a result, the validity of the system is experimentally confirmed.

著者

竹内 芳美 渡辺 隆弘

出版者

公益社団法人精密工学会

雑誌

精密工学会誌 (ISSN:09120289)

巻号頁・発行日

vol.58, no.9, pp.1586-1592, 1992-09-05

被引用文献数

2 13

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The study deals with the general method of generating NC data from collision-free tool path of 5-axis control machining centers. The use of 5-axis control machining centers, capable of machining complicated workpiece shapes efficiently and accurately, is recently increased. Then, it is inevitable to generate collision-free CL data and NC data rapidly. CL data are generated by the main-processor having the collision avoidance procedure between a workpiece and an arbitrary tool shape, based on the solid modeling technique. The post-processor developed in the study can convert CL data to actual NC data, taking account of the structure of machining centers, linearization, feed rate control and spindle rotation control. The main-and post-processors are experimentally found effective.

著者

長坂 学 竹内 芳美

出版者

公益社団法人精密工学会

雑誌

精密工学会誌 (ISSN:09120289)

巻号頁・発行日

vol.62, no.11, pp.1607-1611, 1996-11-05

被引用文献数

12 9

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5-axis control machining has the potentials of producing workpieces with complicated shape efficiently and accurately in comparison with conventional 3-axis control one. NC data for 5-axis control machine tools are in general offered by CAD/CAM systems, which create collision-free CL data from the workpiece and tool shapes. The post-processor plays an important role of providing actual NC data from CL data, taking account of a variety of 5-axis control machine tool structures. The study deals with the proposal of how to construct generalized post-processor, independent of the machine tool structures, by applying a concept of the form shape function, which represents the linkage and kinematics of control axes. As the result, the validity of the proposed generalized post-processor is experimentally confirmed.