Transactions of Materials and Heat Treatment

Title：Prediction of stamping die wear based on blanking burr height of part

Authors： Zhang Heng Peng Jianfei

Unit： Changshu Secondary Vocational School of Jiangsu Province

KeyWords： blanking burr die wear finite element simulation blanking clearance blanking speed

ClassificationCode：TG386

year,vol(issue):pagenumber：2017,42(12):123-127

Abstract：

The wear of stamping dies increases blanking clearance, which leads to the increase of blanking burr height. Thus, the blanking process of CK75 sheet with a thickness of 0.8 mm was simulated by software DEFORM-2D, and the wear process of blanking die was analyzed. Then, the influences of blanking process parameters on the blanking burr height and die wear were studied. The results show that the blanking burr height increases with the increase of blanking clearance and blanking speed, while it shows trends of increasing at first and then decreasing with the increase of fillet radius of punch within the study range of blanking process parameter. However, the wear depth of punch decreases with the increase of blanking clearance, and it increases with the increase of blanking speed, while it shows trends of increasing at first and then decreasing with the increase of fillet radius of punch. In addition, the blanking experiment was carried out by stamping die, and the maximum relative error between simulation value and experimental value of blanking burr height is 17.7%, which provides a more direct approach to evaluate the die wear.

Funds：

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)

作者简介：张恒（1982-），男，硕士，高级技师 E-mail：skywallzh@163.com

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