Research On Mechanical Performance And Machining Stability Of Robot Boring System

Digital Assembly technology can effectively improve the quality and efficiency of aircraft assembly. In a large aircraft fuselage assembly process, for the critical load-bearing parts of wing bulkhead boring, manual processing is still used, which is difficult to achieve the design requirements of aircraft. Therefore, research of automatic boring system based on industrial robot and end effector has important significance in engineering applications. In this paper, theoretical analysis, simulation and experiment were used to study the automatic boring system.In the first chapter, research significance and state of robotic boring technology are expounded, and then the content of this paper is given. In the second chapter, the robotic boring system strength is calculated based on the mechanical analysis model established for boring system and Abaqus is used to analyze frequency of robot under different posture, optimizing robotic posture to avoid system tremor, which provide a theoretical basis for boring system design and stable use. In the third chapter, according its function, the structure of end-effector is detailed designed and optimized using the analysis result of the second chapter. In the forth chapter, boring process parameters such as robotic posture, foot pressure were optimized to avoid vibration and improve machining precision and stability. In the final chapter, summary for the whole work in this dissertation is given, and the future work is discussed.