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附图所示的大走刀量外圆车刀,是我厂机械车间磨刀组长潘孝绅同志改进的。用它来加工45钢零件,走刀量可比原来加大1倍,因而可大大提高生产效率。改进前后切削用量比较如附表所示。车刀的主偏角较小(30°),因此切削径向力较大,适于加工较粗短的轴,如用这种车力加工直径φ25公厘以上、长度在500公厘左右的工件,可避免切削时的振动。所以,在一定条件下,它既适于粗车也可以用于精车。刀刃要求经过良好的研磨。
The figure shows a large amount of walking outside turning tool, is my factory machinery workshop honorary leader of Grinding Group Panxiao Shen improved. Use it to process 45 steel parts, take the amount of 1-fold increase than the original, which can greatly improve production efficiency. Improve the amount of cutting before and after the comparison as shown in the attached table. The main turning angle of the turning tool is smaller (30 °), so the cutting radial force is larger, which is suitable for the machining of the thicker and shorter shafts. For example, with this kind of turning force, the diameter of φ25 mm and the length of 500 mm Workpiece, to avoid vibration when cutting. Therefore, under certain conditions, it is suitable for both rough car and fine car. The blade requires good grinding.