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在钣金零件拉深成形中,如何减少模具套数?现简单介绍多年来我们摸索采用的几种有效措施。一、选择适当的润滑油如图1所示的盒形件(材料LY12M—δ1.5),一件为:A=50毫米,B=34毫米,h=39毫米,R=r=5毫米;另一件为:A=78毫米,B=75毫米,h=41.5毫米,R=r=5毫米。按常规计算均需两次成形。在试制时我们均设计两套拉深模,用机油加滑石粉作为润滑剂,结果圆角处变薄量超差;后
In the sheet metal parts drawing forming, how to reduce the number of mold sets? Now briefly introduced over the years we explore the use of several effective measures. First, select the appropriate lubricant as shown in Figure 1 box (material LY12M-δ1.5), one for: A = 50 mm, B = 34 mm, h = 39 mm, R = r = 5 mm ; The other is: A = 78 mm, B = 75 mm, h = 41.5 mm, R = r = 5 mm. According to conventional calculations require two forming. In the trial production, we designed two sets of drawing die, using oil and talcum powder as a lubricant, resulting in a thin amount of excess margin;