Advances in Manufacturing ›› 2022, Vol. 10 ›› Issue (2): 159-174.doi: 10.1007/s40436-021-00378-7

• ARTICLES •    下一篇

Experimental research on the critical conditions and critical equation of chip splitting when turning a C45E4 disc workpiece symmetrically with a high-speed steel double-edged turning tool

Ming-Xian Xu, Liang-Shan Xiong, Bao-Yi Zhu, Ling-Feng Zheng, Kai Yin   

  1. School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
  • 收稿日期:2021-03-12 修回日期:2021-05-26 发布日期:2022-06-11
  • 通讯作者: Liang-Shan Xiong E-mail:liangsx@hust.edu.cn
  • 基金资助:
    This study was supported by the National Natural Science Foundation of China (Grant No.51675203) and all experiments were completed at the State Key Laboratory of Digital Manufacturing Equipment and Technology. The experiments involved in this study were generously performed by Cheng Dongdong, Mu Xu and Zhang Yikai from the School of Mechanical Science and Engineering. We express our sincere gratitude for their help.

Experimental research on the critical conditions and critical equation of chip splitting when turning a C45E4 disc workpiece symmetrically with a high-speed steel double-edged turning tool

Ming-Xian Xu, Liang-Shan Xiong, Bao-Yi Zhu, Ling-Feng Zheng, Kai Yin   

  1. School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
  • Received:2021-03-12 Revised:2021-05-26 Published:2022-06-11
  • Contact: Liang-Shan Xiong E-mail:liangsx@hust.edu.cn
  • Supported by:
    This study was supported by the National Natural Science Foundation of China (Grant No.51675203) and all experiments were completed at the State Key Laboratory of Digital Manufacturing Equipment and Technology. The experiments involved in this study were generously performed by Cheng Dongdong, Mu Xu and Zhang Yikai from the School of Mechanical Science and Engineering. We express our sincere gratitude for their help.

摘要: Chip splitting is a natural chip separation phenomenon that can significantly reduce cutting energy consumption. To reveal its occurrence mechanisms, a method for obtaining its critical conditions through cutting experiments and establishing its critical equation is proposed in this paper. Based on previous research results regarding the relationship between chip removal interference and chip splitting, the control variables that affect chip splitting are identified by analyzing a geometric model of the cutting process. A total of 366 experiments on turning a C45E4 disc workpiece with a high-speed steel double-edged turning tool based on the dichotomy method were conducted and 51 experimental data on chip splitting critical conditions were obtained. According to these experimental data, a critical equation expressed by a finite-degree polynomial with a cutting thickness equal to the other control variables was fitted. By analyzing the critical surface, it was determined that chip splitting followed a law in which the smaller the cutting thickness and the larger the absolute value of the negative rake angle, edge angle, and edge inclination of the tool, the more likely chip splitting was to occur. Through a verification experiment, it was determined that the derived critical equation could accurately predict the occurrence of 95.24% of chip splitting. It was also determined that the occurrence of chip splitting led to a cliff-like drop in the specific total cutting force with a maximum drop of 51.23%. This research lays a foundation for the rational utilization of chip splitting in tool structure parameter design and cutting parameter energy saving optimization.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-021-00378-7

关键词: Chip splitting, Critical conditions, Critical equation, Cutting force, Experimental research, Double-edged turning tool symmetrical transverse cutting

Abstract: Chip splitting is a natural chip separation phenomenon that can significantly reduce cutting energy consumption. To reveal its occurrence mechanisms, a method for obtaining its critical conditions through cutting experiments and establishing its critical equation is proposed in this paper. Based on previous research results regarding the relationship between chip removal interference and chip splitting, the control variables that affect chip splitting are identified by analyzing a geometric model of the cutting process. A total of 366 experiments on turning a C45E4 disc workpiece with a high-speed steel double-edged turning tool based on the dichotomy method were conducted and 51 experimental data on chip splitting critical conditions were obtained. According to these experimental data, a critical equation expressed by a finite-degree polynomial with a cutting thickness equal to the other control variables was fitted. By analyzing the critical surface, it was determined that chip splitting followed a law in which the smaller the cutting thickness and the larger the absolute value of the negative rake angle, edge angle, and edge inclination of the tool, the more likely chip splitting was to occur. Through a verification experiment, it was determined that the derived critical equation could accurately predict the occurrence of 95.24% of chip splitting. It was also determined that the occurrence of chip splitting led to a cliff-like drop in the specific total cutting force with a maximum drop of 51.23%. This research lays a foundation for the rational utilization of chip splitting in tool structure parameter design and cutting parameter energy saving optimization.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-021-00378-7

Key words: Chip splitting, Critical conditions, Critical equation, Cutting force, Experimental research, Double-edged turning tool symmetrical transverse cutting