基于零件冲裁毛刺高度的冲压模具磨损预测

发布时间：2018-04-10 14:43

本文选题：冲裁毛刺 + 模具磨损　；参考：《锻压技术》2017年12期

【摘要】：冲压模具的磨损会引起冲裁间隙的增大,导致零件冲裁毛刺高度的增加。利用DEFORM-2D软件对0.8 mm料厚的CK75弹簧钢板料的冲裁过程进行有限元仿真,分析了冲裁模具的磨损过程,深入研究了冲裁工艺参数对冲裁毛刺高度与模具磨损的影响变化趋势。研究结果表明:在研究的冲裁工艺参数范围内,零件冲裁毛刺的高度随着冲裁间隙与冲裁速度的不断增加而增大,而随着模具刃口圆角半径的增大则表现出先增加后减小的变化规律;冲裁凸模的磨损深度伴随着冲裁间隙的增大而逐渐减小,随着冲裁速度的增加而增大,而随着模具刃口圆角半径的增加表现出先增大后减小的变化规律。此外,借助冲压模具进行冲裁试验,冲裁毛刺高度的仿真值与试验值之间的最大相对误差为17.7%,从而为衡量模具磨损状况提供了一种比较直接的方法。
[Abstract]:The wear of stamping die will cause the increase of blanking clearance and the height of blanking burr.The blanking process of CK75 spring steel plate with thickness of 0.8 mm was simulated by using DEFORM-2D software. The wear process of blanking die was analyzed. The influence of blanking process parameters on the height of blanking burr and the wear trend of die was studied.The results show that the height of blanking burr increases with the increasing of blanking clearance and blanking speed in the range of blanking process parameters.With the increase of the radius of the cutting edge of the die, the wear depth of punching punch decreases gradually with the increase of blanking clearance, and increases with the increase of blanking speed.However, with the increase of the radius of the cutting edge of the die, the radius of the corner increases first and then decreases.In addition, with the aid of punching die, the maximum relative error between the simulation value of punching burr height and the test value is 17.7, which provides a more direct method for measuring the wear condition of die.
【作者单位】：江苏省常熟中等专业学校;
【基金】：江苏省职业教育教学改革研究课题“数控专业现代学徒制技训课程的开发与实践研究”(ZYB157)
【分类号】：TG385

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