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介绍了一种采用微驱动技术的新型ＮＣ镗床。讨论了以压电元件为动力部件的变形镗杆的工作原理、机械结构及其设计，简单介绍其控制。装有这种新型变形镗杆的ＮＣ镗床能高效地镗削活塞异形销孔，并达到微米精度的要求。
A new NC boring machine with micro-drive technology is introduced. The working principle, mechanical structure and design of the deformation boring bar with piezoelectric element as power component are discussed, and its control is introduced briefly. The NC boring machine with this new type of deformed bar features efficient boring of piston-shaped pin holes and micron-precision requirements.