天津机车车辆机械工厂锻工车间由于生产设备的原因,曾为下短料、窄料而感到困难。例如要剪切长度仅22mm 的φ28mm 的圆料,所用剪床的上刀片厚度即为20mm,再加上固定刀片的刀座厚度28mm,因此采用固定的定位装置无法进行生产。我们设计了一个旋转定位装置,如图1所示,解决了生产问题。 Tianjin locomotive and rolling stock machinery factory forging workshop because of the production equipment, had under the short material, narrow material and feel difficult. For example, to cut a φ28mm round material with a length of only 22mm, the thickness of the upper blade of the used shearing machine is 20mm, and the thickness of the fixed blade seat is 28mm. Therefore, it can not be produced by a fixed positioning device. We designed a rotary positioning device, shown in Figure 1, to solve the production problem.