Abstract
The main feature of hybrid-driven linkage is the combination of the motion of a large constant velocity motor with that of a small servomotor via a two-degrees-of-freedom mechanism. Thereby, the hybrid-driven linkage can provide for programmable motion output. In the present study, a mechanical drawing press driven by a hybrid mechanism was optimized for displacement and velocity. An analysis of forward kinematics and an optimum model are presented. The actual displacement curves of the slider can approach the ideal ones by means of a two-step optimization. The dimensions of the linkage and the motion rules of the servomotor were optimized. The flexible features of the hybrid-driven drawing press are effectively demonstrated by three optimum examples. The optimum results validate the advantages of the hybrid-driven seven-bar mechanical press, such as its flexible slider speeds and adjustable strokes for drawing operations. By properly designing the input motion of the servomotor, the slider can pass through the desired trajectories.
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This paper was recommended for publication in revised form by Associate Editor Hong Hee Yoo
Hui Li received his B.S. in Mechanical Engineering from Hebei Polytechnic University, Hebei, China, in 1991. He received his M.S. in Mechanical Engineering from Harbin University of Science and Technology, Heilongjiang, China, in 1994, and his Ph.D. from Tianjin University’s School of Mechanical Engineering, Tianjin, China, in 2003. He was a postdoctoral researcher at Shijiazhuang Mechanical Engineering College from August 2003 to September 2005, and at Beijing Jiaotong University from March 2006 to December 2008. He is currently a professor of Mechanical Engineering at Shijiazhuang Institute of Railway Technology, China. His research and teaching interests include hybrid-driven mechanisms, kinematics and dynamics of machinery, mechatronics, CAD/CAPP, and signal processing for machine health monitoring, diagnosis and prognosis. He is currently a senior member of the Chinese Society of Mechanical Engineering.
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Li, H., Zhang, Y. Seven-bar mechanical press with hybrid-driven mechanism for deep drawing; Part 1: kinematics analysis and optimum design. J Mech Sci Technol 24, 2153–2160 (2010). https://doi.org/10.1007/s12206-010-0819-0
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DOI: https://doi.org/10.1007/s12206-010-0819-0