金属板材曲线剪切过程仿真研究

【作者】 范俊杰；

【导师】 王侃；

【作者基本信息】 北方工业大学 ， 机械制造及其自动化， 2011， 硕士

【摘要】 板材的成型方式有很多种,剪切是其中比较重要的方式之一,因为在各种加工方式中,剪切这种方式最简单,成本低,应用也最广,它可以作为其他冲压加工的原材料。板金属冷弯成型产品越来越多被应用于实际生产中,而剪切是冷弯成型的一道工序,是为它提供冷弯材料,原材料的好坏会直接影响到终端产品的质量好坏。本文研究的对象是变宽度圆盘剪切机。圆盘剪切机是轧钢机械的重要生产设备之一,具有生产效率高、质量稳定、适于批量生产等特点,能够剪切各种金属板材。但是现有的圆盘剪切机加工的剪切轨迹都是直线剪切,无法实现有一定弧度的曲线剪切,虽然有其他的加工方法能实现曲线的剪切,如线切割和激光加工等,但是生产成本相对较高,没有受到广泛的应用。因此对变宽度圆盘剪切机的研究具有重要的现实意义。剪切过程最重要的是看重剪切断面质量,而影响断面质量的因素有很多,包括：板厚、间隙、重叠量、速度、刃口倾斜角度等,所以要得到好的断面质量,必须对这些因素进行研究,本文通过有限元软件(DEFORM)对剪切过程进行仿真研究,得出影响断面质量因素的一般规律。利用Deform 3D和2D有限元分析软件对变宽度圆盘剪切机剪切过程进行有限元数值模拟。通过对变宽度圆盘剪切机剪切过程的仿真分析,得出各种参数对板材剪切加工质量的影响,例如板厚、间隙、重叠量、速度、刃口倾斜角度等。说明有限元方法对于板材剪切的分析研究具有巨大的潜力。通过对变宽度圆盘剪切机剪切过程进行初步研究,为将来进一步深入研究奠定了基础,并且对实际剪切过程有一定的实践指导作用。更多还原

【Abstract】 There are many kinds of sheet forming methods, and shearing is one of the most important methods, because the shearing is simple, low cost and more extensive, it can also serve as the materials for other stamping processing. The production of flexible roll forming is more and more applied in actual manufacture, and shearing is one of the procedures and provide materials for the flexible roll forming. The quality of raw materials will directly affect the quality of the terminal product.This paper sets the flexible slitting machine as the research object. Disc cutting machine is one of the important equipments with high efficiency, stable quality, suitable for mass production, and it is widely used in all kinds of metal plate shearing. The currently available slitting machine cannot achieve slitting any curve. Although some new-style processing methods, such as wire cutting and laser machine, can achieve shearing of arbitrary curve, it has high production cost. Thereby the research of flexible slitting machine has practical significance.The shear section quality is the most important in shearing processing. There are many factors that influence the quality of cross section, including:thickness, clearance, overlapping quantity, speed, the blade Angle and so on. So if we want to get good cross-section quality, we must make research of these factors. Through the finite element software (DEFORM) we make the research of shear process simulation,and get the general rule of these factors.We make the simulation for flexible slitting machine shearing process using Deform 3D and 2D finite element analysis software. Through analysis to flexible slitting machine shearing process simulation, we get the influence that various parameters of plate to the shear processing quality, such as thickness, clearance, overlapping quantity, speed, the blade Angle. It explain that the finite element method for the analysis of sheet shear research has a great potential.Through the basic research on the flexible slitting machine, provide the foundation for further research, and it has the instruction function to the actual shear process.更多还原