1.它具有较大的刃倾角,λ=十10°,因而刀尖强度很大,可以承受冲击性的载荷。 2.前角γ=20°,这样使切削力减少,大大地减少了动力的消耗,因而可以采用相当大的切削规范(如图1)。综合以上两个特点,可以看出,这把75°外圆偏刀,适用于粗车余量不均匀的毛坏零件。使用情况: 这种刀具应用在立式车床上,所采用的切削用量为:切削速度50～120公尺/分; 1. It has a larger blade angle, λ = 10 °, so the tip strength is great, can withstand the impact of the load. 2 rake angle γ = 20 °, so that the cutting force is reduced, greatly reducing the power consumption, which can use a rather large cutting specifications (Figure 1). Based on the above two features, it can be seen that the 75 ° outer circular knife is suitable for rough parts with uneven roughing allowance. Use: This tool used in vertical lathe, the cutting amount used: cutting speed of 50 to 120 meters / min;