一般加工内外圓同轴度和圆度精度较高的工件,例如,机床主轴、基准量规等,多采用精密V型夹具。这对少量生产的企业就不大适宜。为了提高磨削精度,可采用中心架装夹磨削精密内孔。 General processing of internal and external circularity and circularity of high precision workpiece, for example, the machine tool spindle, datum gauge, etc., the use of precision V-type fixture. This is not suitable for small-scale production enterprises. In order to improve the grinding accuracy, the center frame can be used to grind the precision bore hole.