我厂改进了一种大型套料刀,用来加工914Б型机床的主轴,可以从每一个主轴里套出一根直径116公厘,重85公斤的45号钢料,正好做1A62车床的主轴。采用这种套料刀,节省了大批钢料,并提高了劳动生产率。大型套料刀的结构如图1,由刀体,刀杆和刀尾组成,靠尖牙螺纹连接 Our factory has improved a large sleeve knife, which can be used to machine the spindle of 914Б machine tool. From each spindle, a 45mm steel material with a diameter of 116mm and a weight of 85kg can be set up to make the spindle of 1A62 lathe . With this nesting knife, a large amount of steel is saved and labor productivity is increased. Large nesting knife structure shown in Figure 1, by the cutter body, knife pole and knife tail composition, depending on the canine thread connection