150T单排液压冲孔机改进设计

发布时间：2018-03-30 05:26

本文选题：液压冲孔机　切入点：有限元分析　出处：《安徽工业大学》2017年硕士论文

【摘要】：随着高新技术的快速发展,冲孔成型工艺在机械加工过程中发挥着越来越重要的作用,同时,伴随着铝型材在建筑行业中的不断应用,单排液压冲孔机在市场发展中具有广阔的市场前景。本课题针对某企业150T单排液压冲孔机在对铝模板进行群加工时易出现偏载现象、料件变形大、孔之间的尺寸精度达不到加工要求且冲压的孔不够光滑、智能化程度低等问题进行机械结构、液压系统、控制系统的改进设计,其主要内容为:首先运用SolidWorks对150T单排液压冲孔机进行三维实体建模,并利用Hypermesh进行有限元分析,由结果分析冲孔机进行群冲孔时易出现偏载现象、料件变形大等原因。针对原有机构所存在的此类问题,提出“类八字型”新型机构,同时对冲孔机上的冲针进行改进设计,使每组冲针呈阶梯状从高到低依次排列。此外还对改进后的冲孔机进行静力学和模态分析,结果得出各部件受力均匀且最大应力减少13.1%,最大变形量减小了37.84%。其次对150T单排液压冲孔机液压系统进行改进设计,运用AMESIM软件对液压系统建模并对此模型进行仿真实验,得出位移和流量等性能曲线。在不改变液压系统动态性能的情况下改进液压系统,采用高、低压双泵组合供油以此满足液压系统各阶段所需要的流量和压力。AMESIM仿真结果表明改进后的液压系统液压缸和阀的流量变化更加平稳,冲孔周期缩短43.71%。最后针对150T单排液压冲孔机电气控制系统存在的问题,设计了以三菱FN系列PLC与GOT11系列触摸屏为基础的控制系统和可视化界面。更加清楚的监视和调整设备的运行状态,实现功能上的一体化,结构上的集成化和微型化。
[Abstract]:With the rapid development of high and new technology, punching molding technology plays a more and more important role in the process of mechanical processing, at the same time, with the continuous application of aluminum profile in the construction industry, The single row hydraulic punching machine has broad market prospect in the market development. This subject aims at a certain enterprise 150T single row hydraulic punching machine is easy to appear the biased load phenomenon in the aluminum template group processing, the material part distortion is big, this topic is aimed at a certain enterprise 150T single row hydraulic punching machine when carries on the group processing to the aluminum template, The dimension precision between holes can not reach the requirement of machining, the punching hole is not smooth enough, the intelligence degree is low and so on, the improvement design of mechanical structure, hydraulic system and control system is carried out. The main contents are as follows: firstly, the 3D solid model of 150T single row hydraulic punching machine is built by using SolidWorks, and the finite element analysis is carried out by Hypermesh. In view of this kind of problems existing in the original mechanism, a new type of mechanism of "like eight characters" is put forward, and the punching needle on the punching machine is improved in design at the same time. In addition, the improved punching machine was analyzed by statics and modal analysis. The results show that the stress of each component is uniform, the maximum stress is reduced by 13.1and the maximum deformation is reduced by 37.84. secondly, the hydraulic system of 150T single row hydraulic punching machine is improved and the hydraulic system is modeled and simulated by AMESIM software. The performance curves of displacement and flow are obtained. The hydraulic system is improved without changing the dynamic performance of the hydraulic system. The simulation results show that the flow rate and pressure of the improved hydraulic system hydraulic cylinder and valve are more stable after the combined oil supply with low pressure double pump is used to meet the need of flow and pressure in each stage of the hydraulic system, and the simulation results show that the flow rate of the improved hydraulic system is more stable. The punching period is shortened by 43.71. Finally, aiming at the problems existing in the electric control system of 150T single row hydraulic punching machine, The control system and visual interface based on Mitsubishi FN series PLC and GOT11 series touch screen are designed, which can clearly monitor and adjust the running state of the equipment, realize the integration of function, integration and miniaturization of structure.
【学位授予单位】：安徽工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG385

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