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我厂在生产中,需要对H形薄壁金属型材进行弯曲,如图1所示的圆弧。在弯曲加工时,常常出现压瘪扭曲变形等现象,使弯曲后达不到使用要求。根据我们厂的生产情况,设计了专用夹具,在弯曲时为防止变形选用多个圆柱销组成的销排作为弯曲部分的填充物。圆柱销尺寸可根据槽形尺寸来确定。由于弯曲产生扭矩,防止槽内圆柱销产生位移,将圆柱销钻孔用钢丝连接成销排放在槽内,见图2所示。根据生产情况可将圆柱销
I plant in the production, the need for H-shaped thin-walled metal bending, as shown in Figure 1 arc. In the bending process, often appear buckling distortion and other phenomena, so that bending can not meet the requirements. According to our factory production, designed a special fixture, in the bending to prevent deformation of the selection of a plurality of cylindrical pin pin row as a curved part of the filler. The size of the pin can be determined by the size of the groove. Due to the bending torque, to prevent displacement of the cylindrical pin within the slot, the cylindrical pin hole with steel wire connected to the discharge into the groove, shown in Figure 2. According to the production situation can be pin