射灯罩复杂件成形工艺及模具

常用的广告牌射灯灯罩是一种复杂成形件,由于灯光反射度的要求,表面要求比较高,所以成形难度较大,通过对其结构和冲压工艺分析和计算,制定了一套可行的成形工艺,设计了一种复合模具,拉深成形和凸缘切边一次完成,再通过一副横向和纵向冲孔模完成冲孔,全套生产工艺仅需两副模具。介绍了该成形复合模具的结构、灯罩的冲压过程和模具的设计要点。

The Composite Die for Forming of Lampshade

The high manufacture precision of the lampshade for aluminum alloy sheet with 0.5mm of thickness,and complicated shape used in lampshade was satisfied by exact stamping technique.A feasible forming technique was framed,and one multiple process composite die was designed in order to accomplish the extending and flange cutting base on the analysis and account for the configuration and stamping technology of lampshade.It’s high efficiency of producting the lampshade t hat only two dies was used for a whole process.The composite die structure,stamping process of lampshade and key point of die designing are introduced in this paper.