Abstract
Research on thermal deformation of large-scale computer numerical control (CNC) hobbing machines is on the purpose of obtaining the law of thermal deformation of gear hobbing machines to improve machining precision. According to the structure characteristics of hobbing machines, this paper presents a novel computing model of thermal deformation based on the theory of the thermal expansion deformation of metallic materials, the extensional beam theory, non-uniform temperature distribution of the Euler-Bernoulli beam and Kirchhoff theory of plane-section assumption. Then, the coupling theory of axial and bending deformation of hobbing machines based on the deformation element and equilibrium element method is proposed. The experimental measurement system and platform for thermal deformation of gear hobbing machines is established. The temperature and displacement data of thermal deformation of a certain type gear hobbing machine is analyzed, which has demonstrated the law of thermal deformation of hobbing machines. The locus curves for overall displacement error of cutting points and teeth trace error are obtained. Comparing deformation theory and experimental data, the relative error is lower than 5%, which verifies the computing model proposed by this paper, and shows the research method has great significance for structural optimization, local temperature control, and prediction and compensation for thermal deformation error of gear hobbing machines.
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Recommended by Associate Editor Chang-Wan Kim
Shi-Long Wang received his B.S., M.S. and Ph.D. in Mechanical Engineering from Chongqing University, China, in 1988, 1991 and 1995, respectively. Dr. Wang currently is a Professor at the School of Mechanical Engineering, Chongqing University. He serves as a director of the Chinese Journal of Mechanical Engineering. Dr. Wang’s research interests include manufacturing automation, CNC machine tool, computer integrated manufacturing and enterprises informatization.
Yong Yang received his M.S. in Vehicle Engineering from Chongqing University, China, in 2007. His Ph.D. degree is in Mechanical Engineering from Chongqing University (2012). Dr. Yang’s research interests include CNC machine tool, mechatronics, and manufacturing automation.
Xian-Guang Li received his B.S., M.S. and Ph.D. in Mechanical Engineering from Chongqing University, China, in 1988, 2003 and 2012, respectively. Dr. Li currently is a Professor level senior engineer Chongqing Machine Tool (Group) Co., Ltd., Chongqing, China. Dr. Li’s research interests include numerical control technique, CNC machine tool.
Jie Zhou received his B.S. in Mechanical Engineering and his M.S. in Software Engineering from Chongqing University in 1988 and 2007, respecttively. Zhou currently is an Associate Professor at the School of Mechanical Engineering, Chongqing University, Chongqing, China. His research interests include manufacturing automation, CNC machine tool and mechatronics.
Ling Kang received her M.S. in Mechanical Engineering from Chingqing University, China, in 2007. She currently is a lecturer at the School of Mechanical Engineering, Chongqing University,. Her research interests include manufacturing automation, CNC machine tool.
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Wang, S., Yang, Y., Li, X. et al. Research on thermal deformation of large-scale computer numerical control gear hobbing machines. J Mech Sci Technol 27, 1393–1405 (2013). https://doi.org/10.1007/s12206-013-0320-7
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DOI: https://doi.org/10.1007/s12206-013-0320-7