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磨损是冲裁模具常见的一种失效形式,以预减振盖板零件为分析对象,利用Pro/E软件建立板料冲裁的几何模型,应用Deform-2D模拟软件对板料的冲裁过程进行有限元仿真,分析了冲裁过程中的应力分布状态,研究了冲裁工艺参数对零件光亮带长度及凸模磨损深度的影响。仿真结果表明:光亮带的长度随着冲裁间隙与凸模刃口圆角半径的不断增大而减小,而随着冲裁速度的逐渐增大而增加;凸模的磨损深度随着冲裁间隙的不断增加而减小,而随着凸模刃口圆角半径与冲裁速度的增大呈现出逐渐增加的变化趋势。此外,设计了一副冲压级进模进行试验验证,光亮带长度的模拟值与试验值分别为0.569与0.518 mm,两者之间的相对误差为9.85%,从而验证了利用光亮带长度间接衡量模具磨损情况的可行性。
Wear is a common form of failure blanking die, pre-vibration cover plate parts for the analysis of the object, the use of Pro / E software to establish geometric blanking plate model, the application of Deform-2D simulation software sheet blanking process The finite element simulation was carried out, the stress distribution in the blanking process was analyzed, and the influence of blanking parameters on the bright strip length and punch wear depth was studied. The simulation results show that the length of the bright belt decreases with the increasing of the blanking clearance and the fillet radius of the punch edge, and increases with the increasing of blanking speed. The wear depth of punch increases with the punch Cutting gap increases with decreasing, and with the punch edge radius and punching speed increases showing a gradual increase in the trend. In addition, a series of stamping progressive dies were designed and tested. The simulated and measured values of the bright strip length were 0.569 and 0.518 mm, respectively, with a relative error of 9.85%. Thus, the indirect measurement of the bright strip length was validated Feasibility of mold wear.