对称三辊卷板机上辊挠度补偿计算与受力分析

摘要

The plate bending machine is forming equipment for bending the sheet metal, and can bend the plate material to cylinder shape, arc, cone shape or other.Symmetry three-roll bending machine is simple in structure, convenient to operate, and suitable for many varieties, small batch of steel pipe production.Because the symmetrical three-roll bending machine is symmetric, the force is relatively uniform when sheet metal is bending, so it can solve the problem of the rebound and the pre-cision.In order to ensure the quality, and considering the roundness and linear of the forming sheet, we must ensure that the top roller has sufficient rigidity and deflection.In this paper, using the software simulation of AutoCAD Mechanical, and as-suming the support reaction force, the uniform load of the top roller is simulated; Mechanical software is used in inverse solu-tion to add the deflection on top roller, thus to ensure the quality of sheet metal.%卷板机是一种弯曲金属板材的成形设备，可将材料弯曲成筒状、弧状、锥状或其他形状的板件。机械式对称三辊卷板机的设计结构简单，操作方便，适合多种品种、小批量钢管的生产。由于卷板机的三辊是对称的，在弯曲成形的过程中，板材前后受力相对均匀，因此能够使钢板的回弹问题和精度问题得以解决。为了保证板料的成形质量，考虑到成形筒型的圆度和母线的直线度，所以必须保证上辊有足够的刚度，从而加入挠度的概念。应用 AutoCAD Mechani－cal 软件模拟，假设支反力，模拟卷板机上辊所受的均布载荷，用 Mechanical 软件进行逆推求解，来补偿上辊挠度，保证板材成型质量。