較大規格钻头等的备料是将其刃部同柄部焊接后,再将焊接处光整处理。以前采用車削办法,生产率低,劳动强度高。現采用一个模具(如图1),在25吨的普通冲床上冲光焊縫,生产率可稳定达到班产5000件以上。加工范围为ф10～22毫米。这个办法 Preparation of larger specifications such as drill is the blade with the handle after welding, and then the welding finishing. In the past using the turning method, low productivity, high labor intensity. Now using a mold (Figure 1), 25 tons of ordinary punch on the red welds, productivity can be achieved more than 5000 classes of production. Processing range ф10 ~ 22 mm. This approach