It is necessary to study the connecting technique between the drillcutter and placenta, because the connecting quantity affects the working life of drill.
钻头切削齿与胎体的连接质量关系到钻头的使用寿命，因此有必要对切削齿与胎体的连接技术进行探讨。
2
Series produced by the tool are: woodworking cutter, alloy discharge drilling, drill steel front, the fork blade, back blade, vertical knife, circular saw blades, etc.
公司生产的刀具系列有：木工铣刀、合金排钻、锋钢钻头、叉刀、背刀、立轴刀、圆锯片等；
3
The device is posterior cutter grinding to drill in cone surface grinding method that it can vouch for drill with reasonable back Angle, and symmetry precision is high.