角钢,俗称角铁(见图1),它能被加工成各种各样的框架。在这些框架的制造中不可避免要在角钢上切除一定角度的材料,使它能弯曲成所需的式样。其切除的加工方法:(1)采用手工锯削加工成型。(2)采用模具在压力机上进行切角冲裁。 Angle steel, commonly known as angle iron (see Figure 1), can be machined into a variety of frames. It is inevitable in the manufacture of these frames to cut an angle of the angle of the material, so that it can be bent into the desired style. The excision of the processing methods: (1) the use of hand-sawing machining molding. (2) using die in the press cut corners punching.