本文選題：擺式飛剪　切入點：曲軸　出處：《武漢科技大學》2015年碩士論文

【摘要】：薄板坯連鑄連軋技術是鋼鐵生產工業(yè)近年來最重要的技術進步之一，擺式飛剪是連鑄連軋生產線上的重要設備，其主要功能是對鑄坯進行切頭切尾以及將鑄坯剪切成要求的定尺長度。擺剪系統(tǒng)的正常運行與否極大地影響著生產線的生產作業(yè)，因此，對擺式飛剪進行動力學分析并評估擺剪的整體性能有著重要的理論指導意義和實際應用價值。 本文以某鋼廠連鑄坯生產線擺式飛剪為研究對象，對其機構原理進行了介紹，分析了頂剪故障產生的原因，運用剛柔耦合系統(tǒng)動力學技術，對擺剪工作過程進行仿真，重點研究了曲軸以及擺動框架兩個關鍵零部件，具體研究了以下內容：對擺剪進行多剛體動力學仿真分析，得到主要構件的運動軌跡和速度曲線；分別把曲軸和擺動框架作為柔性體，對擺剪剪切動作進行剛柔耦合動力學仿真分析，，得出擺剪各關鍵連接處的受力以及柔性體的應力和應變；同時把曲軸和擺動框架作為柔性體對擺剪進行動態(tài)仿真分析，得到柔性體的應力、變形狀況以及各連接處的受力；以最大設計剪切力作為載荷進行仿真分析，考察系統(tǒng)的承載能力。仿真結果表明，擺剪系統(tǒng)承載能力良好，曲軸以及擺動框架的強度和剛度滿足生產需求，曲軸和擺動框架是否作為柔性體會在一定程度上影響各自的應力狀況以及系統(tǒng)其他部件的受力。本文的研究工作對擺剪的設計、改造及維護有著較大的指導意義。
[Abstract]:Thin slab continuous casting and rolling technology is one of the most important technological advances in iron and steel production industry in recent years, and tilting flying shear is an important equipment in continuous casting and rolling production line.Its main function is to cut the head and tail of the billet and to cut the billet into the required length.The normal operation of the pendulum shear system greatly affects the production of the production line, so it is of great theoretical significance and practical application value to analyze the dynamics of the pendulum shear and evaluate the overall performance of the pendulum shear.In this paper, the tilting flying shear of a continuous casting billet production line in a steel plant is taken as the research object, the mechanism principle is introduced, the causes of the failure of top shear are analyzed, and the working process of pendulum shear is simulated by using rigid-flexible coupling system dynamics technology.Two key parts of crankshaft and swing frame are studied emphatically. The following contents are studied in detail: the kinematic trajectory and velocity curve of the main components are obtained by dynamic simulation analysis of the pendulum shear;At the same time, the crankshaft and swing frame are used as flexible body to simulate and analyze the pendulum shear, the stress and deformation of the flexible body and the stress at the joint are obtained, and the maximum design shear force is taken as the load to simulate and analyze.Investigate the bearing capacity of the system.The simulation results show that the bearing capacity of the shearing system is good, and the strength and stiffness of the crankshaft and the swing frame meet the production requirements.Whether the crankshaft and the swing frame are flexible will influence the stress condition of each other and the force of other parts of the system to a certain extent.The research work in this paper is of great significance to the design, renovation and maintenance of pendulum shear.
【學位授予單位】：武漢科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TG333.21

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