Dynamic Perfopmance Analysis And Its Development For The Primary Motion System Of Multi-Layer High-Speed Leather Cutting Machine

The high-speed leather cutting machine is one of the essential conditions of the modern leather industry for improving the competitiveness of enterprises. Because of the big gap between the the domestic cutting machine and the foreign products and foreign equipment is expensive, therefore, the high-speed, high-performance multi-layer leather cutting machine developed with independent intellectual property rights has important practical significance for the leather goods production efficiency as well as improving the competitiveness for the domestic small and medium-sized enterprises.For the consideration of the cutter bending phenomenon, noise and vibration in the cutting process, the dynamic performance analysis and simulation for Leather cutting machine main movement system was done. The main work and results of this paper are as follows:(1) After analyzing the working principle of the main movement and the characteristics of its rotor in the multi-layer leather cutting machine, two types modal parameters of the the was obtained by using bond graph-modal analysis method. Then Based on the analysis of the actual condition of the leather cutting machine, a suitable cutting work speed sequence was developed.(2) Balance analysis on the rotor was done by using transfer function-balancing analysis method. And get the best correction mass of single-disk rotor. Finally, the steady-state response compared of the main movement at two prepared speed on the B&K test platform before and after the dynamic balancing process.(3) After considering the gap and friction nonlinear factors, the cutter bodies bond graph model and equation of state was established based on the bond graph theory, and the cutter body’s dynamics characteristic curve which is closer to the actual working conditions was obtained.The results provide the necessary theoretical basis for the development of the physical prototype.(4) In the analysis of system components and mechanism of the primary motion, fully using of the superiority of the bond graph theory, the primary motion system model established in the20-Sim software platform, Simulation and analysis with consideration of the nonlinear factors. And finally manufacture a physical prototype of the primary motion system and combination of different materials, different layers of the cutting tests process the was taken.This paper combines the advantages of theoretical research and experiment. The leather cutting machine main movement system dynamics performance was analyzed, whose results are well prepared for the next step to achieve optimized design, and provide an important practical value for improving the overall performance of the leather cutting machine.