1.刀具(见图)特点: (1) 刀具材料为W9Cr4V2高速钢; (2) 刀具是螺旋错齿的,加工过程中是轮次切削,一次拉制成功; (3) 切削时是逐渐切削,使应力分布比较均匀,丝攻又较长,每齿分担力较小,一般来说刀具没有什么损坏; (4) 质量稳定,光浩度一般可达▽6。 (5) 刀具寿命较长,使用到一定程度后可修磨前面,即能照常使用; 1. Tool (see picture) Features: (1) The tool material is W9Cr4V2 high-speed steel; (2) The tool is spiral wrong tooth, the machining process is round cutting and the drawing is successful; (3) , So that the stress distribution is more uniform, longer wire tapping, each tooth is less effective, in general, no damage to the tool; (4) the quality is stable, the general ho Guang Hao ▽ 6. (5) longer tool life, use to a certain extent after the grinding front, that can be used as usual;