###### Abstract  
During the rock-breaking process, severe vibration frequently leads to cutter system failures. The traditional cutter system is complicated in structure, and the cutter-changing operation is highly dependent on the manual operation, resulting in a low construction efficiency and a high risk. Thus, this paper designed an integrated cutter system with a simple structure, which lays a theoretical foundation for popularizing the cutter-changing robot. In the statics performance experiment, we built an integrated cutter system finite element model, calculated the stress value under a nominal load; manufactured the scaled cutter system based on the similarity principle, obtained the measured stress value through the load experiment; and verified the accuracy of this cutter system's finite element model. In the dynamics experiment, we calculated the cutter system and each components dynamic response based on the concentrated mass method and the Newmark method, obtained the measured vertical vibration displacement through a scaled loading experiment and verified the correctness of the vertical dynamics model, and set the real disc cutter linear cutting load as the external excitation to verify the feasibility of the new cutter system design scheme.  
finite element; Newmark method; concentrated mass method; dynamic characteristics analysis; TBM cutter system design +
Footnote †: journal: Applied Sciences
connecting rod cutter system, which has simple disassembly actions, but it is easy to be stuck in the movement process and has a low reliability. In 2018, the Robot Innovation Center of the German Artificial Intelligence Research and Development Center [10] developed a slider cutter system, which has a simple structure and less disassembly actions, but it is hard to manufacture. Two French researchers, [PERSON] and [PERSON] [11], invented an integrated rotating-panel TBM cutter system, which has a simple structure and few disassembly actions, but has disadvantages such as excessive stress on the rotating panel and easy sticking of the rotating panel.  
The study of the cutting cutter system in China started late. In 2018, Hongrun Construction Co., Ltd. [4] cooperated with universities to develop an integrated cutter system that uses an eccentric circular mechanism to lock the cutter. The cutter can be locked and unlocked by grasping the cutter counterclockwise, but it is difficult for the cutter-changing robot to grasp accurately. [PERSON] [12] et al. of Dalian University of Technology proposed an integrated cutter system based on the topological structure theory of the planar mechanism, and the solution space is obtained for the six-bar single-DoF, which further improves the anti-loosening effect.  
In summary, the research on the integrated cutter system has achieved certain results. However, there are still shortcomings, mainly reflected in the number of disassembly steps, locking capacity, and cutter system reliability. Based on the above research results, aiming at simplifying the cutter system structure and reducing the disassembly and assembly steps, this paper innovatively proposes an integrated new TBM cutter system design scheme.