金福长同志综合了银白屑车刀和斯达良诺夫车刀的特点,改进了一种大前角车刀(如图2),可以在C650车床和大型卧式车床,也可以在立式车床上使用。采用这种刀具能够使生产效率成倍的提高。(一)刀具的几何形状刀具前倾面前角γ=20°,刀具带有倒棱,棱宽f=0.5～0.8,γ_棱= Comrade Jin Fuchang combines the characteristics of the silver white crumbs and the Stargardov Knife, improved a large front corner turning tool (Figure 2), in the C650 lathe and large horizontal lathe can also be vertical lathe Use on. Using this tool can double the productivity. (A) the geometry of the tool Tool rake face rake angle γ = 20 °, the tool with a chamfer, edge width f = 0.5 ~ 0.8, γ_ edge =