钢型材的应用日益广泛。不论何种型材零件,制造中首先要解决的是切断加工问题。型材零件按切断后的断面形状可分为直角切断、45°切断、开榫切断三大类型。如图1、图2、图3所示的开榫零件,不少工厂仍采用手工或机械加工(铣削或磨削)的 The application of steel profiles is increasingly widespread. No matter what kind of profile parts, the first thing to be solved in manufacturing is to cut off the processing problems. Profile parts by cutting the cross-section shape can be divided into rectangular cut-off, 45 ° cut off, tenon cut off three types. As shown in Figure 1, Figure 2, Figure 3, the tenon parts, many factories are still using manual or mechanical processing (milling or grinding)