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在学习兄弟厂先进经验的基础上,我厂自制了镶硬质合金的成型铣刀,在X62W 铣床上采用高速铣削工艺,使铣传动轴花键轴的生产效率逐步提高到班产120件(每台铣床),最高可达140件,比一般用高速钢成型铣刀铣削效率提高三倍以上。铣刀结构如图所示。刀体由45号或40C_r 钢,刀片用YT15硬质合金,刀刃前角—14°,侧刃后角4～6°,刃边负倒棱0.1～0.15毫米,刀片用铜焊焊接在刀体上。为了消除由于焊接而形成的内应力,焊后要进行回火,加热到300℃,保温6小时。
On the basis of learning advanced experience from Brothers Factory, our factory made a carbide milling cutter with homemade high-speed milling technology on the X62W milling machine to gradually increase the production efficiency of the spline shaft of the milling transmission shaft to 120 units in production Each milling machine), up to 140, more than three times the milling efficiency of the general high-speed steel milling cutter. Cutter structure as shown. The blade is made of 45 or 40C_r steel, YT15 carbide for blade, -14 ° rake angle, 4 ° -6 ° flank angle, and 0.1-0.15 mm cutting edge. The blade is brazed with the blade body on. In order to eliminate the internal stress due to welding, after welding to be tempered, heated to 300 ℃, heat 6 hours.