法兰盖级进模结构设计

Structure design on progressive die for flange cover

分析了法兰盖的结构和冲压工艺,指出用级进模生产法兰盖钣金件,并在级进模上安装攻牙装置,对法兰盖上的螺纹孔进行攻牙。首先,介绍了法兰盖级进模的料带图,指出其重点工序为落料、翻边、攻牙和脱模,难点为确定级进模的步距;然后,介绍了确定落料模尺寸的方法,并着重分析了该产品翻边孔底孔直径的计算方法;最后,介绍了攻牙机构,指出在该模具上安装攻牙机构等,并利用上模的上下运动作为动力源,在模具冲压过程中对产品实现攻牙工序。由于产品上相邻螺纹孔相隔的距离太近,分两个工位对4个螺纹孔进行攻牙。

The structure and stamping process of flange cover were analyzed,and a progressive die was proposed to produce the sheet metal parts of flange cover.Then,a tapping device was installed on the progressive die to tap the threaded holes on the flange cover.First,the strip layout of the progressive die for flange cover was introduced,and it was pointed out that the key processes for this set of flange cover progressive die were blanking,flanging,tapping and stripping,and the difficulty was to determine the step distance of the progressive die.Next,the method to determine the sizes of blanking die was described,and the calculation method of bottom hole diameter for flanging hole of part was mainly analyzed.Finally,the tapping device was introduced,which was installed on the die,and the tapping process for product was realized by using the up and down movement of upper die as the power source during the stamping process of die.In addition,because the distance between adjacent threaded holes on the part was too close,four threaded holes were tapped in two positions.