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The Development of an Interactive Automatic Tool Changer System Based on Virtual Reality Technology
Yong Sang,Ying Han,Yuebang Dai,Fengtao Li 보안공학연구지원센터 2016 International Journal of Multimedia and Ubiquitous Vol.11 No.9
Automatic tool changer system with high operability is the critical component of high efficiency automated machine tools. This paper introduces an interactive simulating platform for an automatic tool changer system based on virtual reality technology, with which students can know the structure of chain tool library, the principle of tool changing manipulator and the various cutting tools. In this paper the frame structure of the interactive simulating platform and the working principle of the platform were explained. The motion control mechanism of components of automatic tool changer system was elaborated in the way of taking the process of changing cutting tools as an example. The interactive simulating platform of the automatic tool changer system utilizes browser-based structure, Java3D, virtual, Java Applet and some other technologies to develop a Web3D virtual reality learning environment, with the advantages of easy understandability, good interactivity, strong sense of reality, simple updatability, small investments and so forth, which can satisfy the requirements of online learning for many students at the same time. It is very important in the distance online education or vocational skills remote training of mechanical engineering.
특허분석을 통한 공작기계 자동공구교환장치의 기술 현황과 발전방향
김동현(Dong Hyeon Kim),지현수(Hyun Su Chee),이춘만(Choon Man Lee) Korean Society for Precision Engineering 2013 한국정밀공학회지 Vol.30 No.3
Automatic tool changer(ATC) is typically provided to a machine tool to improve the efficiency of the machine tool significantly by saving time in moving, switching, installing and storing tools as well as adjusting a calibrating the machine tool. In this study, technical trend of machine tools automatic tool changer are analyzed by patent mapping. And future development direction of automatic tool changer has suggested. The analysis is carried out by using problem solution map for the applied patent during 2000 and 2010 in USA, Japan, Europe and Korea.
Study on failure warning of tool magazine and automatic tool changer based on tool-pulling force
Hailong Tian,Zhaojun Yang,Guofa Li,Chuanhai Chen 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.9
A tool magazine and automatic tool changer is used to store and change tools in a machining center. Its failures would increase the maintenance time and repair cost. For decreasing failures, an early warning system of failures can be used to detect characteristic signals which can reflect potential failures. The tool-pulling force is increasing to peak value instantly when the tool changing arm draws a tool holder out of a tool pocket. To predict failures, the tool-pulling force signals are analyzed and the relationship between the maximum tool-pulling force and the severity of the lock spring failure is established, then, calculation method of the tool-pulling force threshold of the lock spring failure which can lead to tool falling failures is developed and demonstrated. The verification testing results show that the failure warning method based on the tool-pulling force threshold is feasible to predict the tool falling failures.
노영화(Y. H. Roh),임상헌(S. H. Lim),이춘만(C. M. Lee) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
This study is concerned about the development of tower type automatic tool changer. The tower type automatic tool changer is developed to reduce stand-by time by shortening tool change time. The developed system can store more number of tools in small space. A structural analysis for the machine is carried out to check the machine design using commercial software, CATIA V5. In the result of structural analysis, the safety of the developed system is confirmed.
Four-bar linkage-based automatic tool changer: Dynamic modeling and torque optimization
이상호,서태원,김종원,김종원 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.5
An Automatic tool changer (ATC) is a device used in a tapping machine to reduce process time. This paper presents the optimization of a Peak torque reduction mechanism (PTRM) for an ATC. It is necessary to reduce the fatigue load and energy consumed, which is related to the peak torque. The PTRM uses a torsion spring to reduce the peak torque and was applied to a novel ATC mechanism, which was modeled using inverse dynamics. Optimization of the PTRM is required to minimize the peak torque. The design parameters are the initial angle and stiffness of the torsion spring, and the objective function is the peak torque of the input link. The torque was simulated, and the peak torque was decreased by 10 %. The energy consumed was reduced by the optimization.
ATC Test Bench개발 및 성능평가에 관한 연구
김재현(Jae Hyun Kim),최준영(Jun Young Choi),이춘만(Choon Man Lee) Korean Society for Precision Engineering 2012 한국정밀공학회지 Vol.29 No.5
Automatic tool changers(ATCs) store tools used in a machining center to its magazine and changes the tools automatically. Tools of machine centers are changed and then precisely equipped to spindle system by the ATC. Therefore, the stability and reliability of the ATC is very important. But, there is lack of development and evaluation on basic performance and vibration of the ATCs. So, in this study, a BT40 ATC test bench was developed to verify stability and reliability of BT40 ATCs.
A study on the Design of Drum Type Automatic Tool Changer
Hyun-Jin Choi(최현진),Han-Gyu Lee(이한규) 한국기계가공학회 2020 한국기계가공학회지 Vol.19 No.7
Automatic tool changers (ATCs) can be divided into drum and chain types. Drum-type ATCs contain a magazine, where the tools are mounted, and a cam gearbox, which swaps the tools via roller gear and grooved plate cams. Drum-type ATCs are advantageous in that the operating time for the tool magazine is more rapid than that of chain-type ATCs and the length of the unit is shorter. Thus, drum-type ATCs can be fabricated into various shapes and forms depending on the number of tools and the magazine size in accordance with machining center requirements and consumer demand. In particular, the price competitiveness of a machining center with a drum-type ATC is higher, while drum-type ATCs are more rigid with fewer parts, possibly reducing the need for regular servicing. This study aims to verify the structural stability and design validity of the magazine base, which is the main structure of a drum-type ATC, using finite element analysis. This study kinematically verifies the specifications of the selected drive motor and reducer and assessed the design of the cam gearbox. It also conducts a structural analysis of the roller camp, which is the core component of the cam gearbox, based on the results of the kinetodynamic analysis, thus validating the structural design.