At present, the ultra-precision machining technology develops rapidly, especially with development in modern machining, measuring and control technology, this promotes more the development of ultra-precision machining. And the development of all kinds of technology has put forward higher demand on it. At present, people can achieve a nanometer feed control, and can remove material in nanometer magnitude from the surface of workpiece, obtain a surface quality of Ra1 ～ 2nm. The paper will give a brief introduction to some technologies used in developing NAM- 800. An ultra-precision machine mainly consists of the following components: ( 1 ) High-precision movement parts; ( 2 ) High-precision servo drive system and measuring feedback part; (3) Control system.
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