我厂鑽头車間技术员刘宝祥和定額员赵玉琤兩同志,在学习苏联先进經驗——苞米銑刀的基础上,共同改进了加工鑽头刃溝的成型銑刀,即在銑刀的刀刃上增添了一些断屑槽。应用这种苞米式的成型銑刀,可以大大增加走刀量,所以提高了生产效率1倍左右,刀具 Liu Baoxiang, a technician in the drill bit workshop of our factory, and two comrades, Zhao Yuchi, who are in charge of the drill, have jointly improved the forming milling cutter for machining the cutting edge and groove on the basis of studying Soviet advanced experience - corn milling cutter, that is, Some chipbreaker. The use of this type of corn-type milling cutter, you can greatly increase the amount of walking, so improve the production efficiency of about 1 times, the tool