主要特点  The Main Features

●下钻自动进给，上钻手动进给 Lower drill-bit works automatically, upper drill-bit works manually

●钻头转速多级可调 Drilling speed is adjusted by variable motor

●钻孔深度行程油压缓冲 Install hydraulic buffer in the end of lower-drill bit so drilled hole is not easy chipping

●工作台可气动升降 Working table can be pneumatically up and down

●装上定位板可高效批量加工 Install positioning plate that can be fitted with efficient batch processing

主要技术参数  The Main Technical Parameters