Transactions of Materials and Heat Treatment

Title：Multi-position progressive die design for connecting plate

Authors： Yan Huajun Chen Baojie Liu Yuzhong Ma Shibo Zhang Shuangjie Shi Xiaomeng

Unit： Hebei University of Science and Technology

KeyWords： progressive die connecting plate layout bilateral carrier die design bending springback

ClassificationCode：TG386.2

year,vol(issue):pagenumber：2019,44(7):113-118

Abstract：

Through the process analysis on the structure, thickness and material of connecting plate, the progressive die design scheme was adopted to produce the parts. Considering the carrier form and the margin factor, a progressive die layout with bilateral carrier was confirmed with fourteen punching stations including seven punching stations, two downward bending stations, two upward bending stations, two empty working stations and one cutting station,and the material utilization of layout was 42.6%. Then, the die design was carried out, the punch was designed as the fast-changing structure and fixed by screw plug and top pillar, the special-shaped punch was positioned by local shoulder, and the die was designed by insert structure. Furthermore, the double-row elastic floating material structure, the double-row guiding pin and the inner guiding column and guiding sleeve were designed to ensure the feeding and guiding accuracy. In order to solve the problem of bending springback, four bending stations of 30° downward bending, 90° downward bending, 30° upward bending and 90° upward bending were designed, and the pressing and discharging were realized by the elastic pushing mechanism to ensure the bending accuracy. The die processing and stamping experiment were completed, and the precision of parts reaches the technological requirements.

Funds：

石家庄市科学技术研究与发展计划项目(171081581A)；河北科技大学通用航空平台开放基金项目（2015PT19）

闫华军(1978-)，男，博士，副教授，E-mail：yanhj22@163.com；通讯作者：张双杰(1966-)，男，博士，教授，E-mail：zsjzlili@163.com

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