Abstract
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.
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Sangho Lee is a master’s degree candidate in the School of Mechanical Engineering, Yeungnam University, Gyeongsan, Korea where he also received B.S. degree in 2015. His research interests include creative robotic design, optimization, robotics and mechanism design.
Jong-Won Kim is a Ph.D. candidate in the School of Mechanical and Aerospace Engineering, Seoul National University, Korea where he also received B.S. degree in 2012. His research interests include optimization, robotics and creative design.
TaeWon Seo is an Associate Professor in the School of Mechanical Engineering, Yeungnam University, Gyeongsan, Korea. He received the Ph.D. degree in Mechanical Engineering, Seoul National University, in 2008. He was a Post- Doctoral Researcher at the Nanorobotics Laboratory, Carnegie Mellon University, in 2009. His research interests include creative robotic platform design, control, optimization, and motion planning.
Jongwon Kim is a Professor in the School of Mechanical and Aerospace Engineering, Seoul National University, Korea. He received the B.S. degree in Mechanical Engineering from Seoul National University in 1978, and the M.S. degree in Mechanical and Aerospace Engineering from KAIST, Korea, in 1980. He received the Ph.D. in Mechanical Engineering from the University of Wisconsin-Madison, USA, in 1987. He worked with Daewoo Heavy Industry & Machinery, Korea, from 1980 to 1984. From 1987 to 1989, he was Director of the Central R&D Division at Daewoo Heavy Industry & Machinery. From 1989 to 1993, he was a Researcher at the Automation and Systems Research Institute at Seoul National University. His research interests include parallel mechanisms, Taguchi methodology, and field robots.
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Lee, S., Kim, JW., Seo, T. et al. Four-bar linkage-based automatic tool changer: Dynamic modeling and torque optimization. J Mech Sci Technol 31, 2407–2413 (2017). https://doi.org/10.1007/s12206-017-0438-0
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DOI: https://doi.org/10.1007/s12206-017-0438-0