Research on gripping conditions in profile ring rolling of raceway groove |
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| Authors: | Dong-Sheng Qian Lin Hua Li-Bo Pan |
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| Affiliation: | 1. School of Mechanical Engineering/Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University, Busan 609-735, Korea;2. Technical Laboratory, TAEWOONG, Busan 618-817, Korea;1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;2. Hubei Key Laboratory of Advanced Technology of Automotive Parts, Wuhan University of Technology, Wuhan 430070, China;1. Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China;2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China;3. Guizhou Aviation Technology Development Co., Ltd., Guiyang 550081, China;1. PNU-IFAM JRC, Pusan National University, Busan 609-735, South Korea;2. School of Mechanical Engineering, Pusan National University, Busan 609-735, South Korea;1. Department of Engineering, University of Cambridge, Trumpington Street, CB2 1PZ, United Kingdom;2. Institute of Metal Forming, RWTH Aachen University, Intzestraße 10, 52072, Aachen, Germany;3. Advanced Forming Research Centre (AFRC), University of Strathclyde, Glasgow, United Kingdom;1. School of Automotive Engineering, Wuhan University of Technology, Wuhan 430070, China;2. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;3. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan 430070, China;4. Department of Mechanical Engineering, University of Sheffield, Sheffield S1 3JD, UK |
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| Abstract: | Ring gripping means that under the pressure of roll and friction, ring grips the rolling gap and produces rotating rolling motion, thus ring thickness receives equal rolling and the outer diameter expands equally, and this is a sufficient condition for ring rolling forming. In this paper, gripping course in profile ring rolling of raceway groove is analyzed based on ring rolling principle and static theory. The gripping mechanical model for profile ring rolling of raceway groove is established, and gripping conditions are researched according to the geometrical relationship in rolling. The results indicate that ring could be ensured to continuously grip the gap in rolling by controlling feed per revolution and preventing it from exceeding the maximum feed per revolution allowed by ring gripping. Furthermore, influencing factors of gripping conditions are analyzed. At last, the experiments and the FE simulation for profile ring rolling of raceway groove are performed to testify the validity of gripping conditions. Both the experimental and simulation results show that when feed satisfies gripping conditions, ring can continuously grip the gap and be formed by rolling. Otherwise, ring cannot grip the gap and is squashed between the rolls. The results of this research provide a theoretical basis for design of technological parameters of profile ring rolling of raceway groove. |
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