新型浮动切刀在落料模上的研究与应用

Research and application of new floating cutter for blanking die

由于汽车覆盖件零件尺寸较大,采用传统的排样工艺设计开卷落料模会导致模具尺寸超出开卷设备的工程能力范围。通过应用浮动切刀技术改进了传统的排样方式,能有效缩减落料模尺寸,并应用材料力学知识推导出最小浮动切刀修边长度,可保证板料边缘在废料刀和切断刀连接处不发生变形,通过改善上模切刀结构,解决了上模切刀侧壁摩擦板料边缘导致板料边缘变形的问题。

In view of the size of some automobile panel was large, that was hard to use the traditional blank layout to design the blanking die, and lead to the die size beyond the capability of uncoiling blanking equipment. It was applied the floating cutter technology to improve the traditional blank layout style, which could reduce the size of blanking die effectively. And in order to solve the parts＇ edge trimming deformation in the scrap cutter and separating cutter joining, the formula of minimum length of trimming on the floating cutter was deduced by the mechanics of materials. And the bank deformation caused by the friction between the edge of blank and the upper cutter was solved by improving the structure of upper cutter.