郑州第二机床厂与河南省电子研究以共同研制成功了一种CNC－27－007型双工位精密内圆磨床其主要特点是：1.采用一次装夹工件，头架横向平移就可分别在两个工位上依次磨削加工中乱和座面，从而保证了中扎和座面的高同轴度；2.头架来用高通转精度的空气静压电主轴装置，从而保证 Zhengzhou Second Machine Tool Works and Henan Province, the successful development of a joint electronic research CNC-27-007-type double-precision internal cylindrical grinder its main features are: 1. Using a clamping workpiece, headstock can be translated horizontally In two stations in turn grinding and chaos in the seat surface, so as to ensure that the bar and seat surface of the high concentricity; 2. The first frame to pass the high-pass precision air static pressure spindle device, thus ensuring