我们在用硬质合金刀高速车螺丝时,要用刀尖角为60°的刀片,这种形状的刀片很少,在急用时,只得用方形的硬质合金刀片磨成60°的角度。在磨的时候,既浪费砂轮又浪费硬质合金。工人戴其甫和大伙研究出一种切割硬质合金的方法,在切割60°形的刀片时,不但节省磨刀工时,而且切下的小块硬质合金还可用在其他刀具上。同时,打坏的硬质合金刀片还可 When we use carbide knives high-speed car screws, the use of blade angle of 60 ° blade, the shape of the blade is very small, in urgent need, only with square carbide blade grinding angle of 60 °. When grinding, it is a waste of grinding wheel and hard alloy. Workers Dai and Fu, who worked out a method of cutting cemented carbide, not only save sharpening hours when cutting 60 ° inserts, but also cut small cemented carbides that can be used on other tools. At the same time, broken bad carbide blade can be