1. School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China
2. Shandong Provincial Key Laboratory of Precision Manufacturing and Non-Traditional Machining, Zibo 255000, China
3. School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
4. Dieless Forming Technology Center, Jilin University, Changchun 130025, China