deep-small hole

Because of the cantilever processing, especially the small hole, deep hole and hard workpiece processing, the rigidity of the tool system is particularly important.

因为是悬臂加工，特别是小孔、深孔及硬质工件的加工时，工具系统的刚性尤为重要。

Millisecond delay technology of high step and deep hole is the first application in China, it offers a realistic method for high step exploitation of middle and small scale limestone mine.

高台段深孔孔内微差爆破技术在我国的首次应用，为中小型石灰石矿山高台段开采提供了切实可行的方法。

The result shows that ultrasonic vibration drilling could improve the working accuracy and efficiency, and could solve the problems exited in the drilling process of small deep hole.

结果显示，该工艺方法能大幅提高小深孔的加工精度和效率，很好地解决了小深孔加工中存在的难题。