精密机床主轴(磨床头架主轴等)滚动轴承的装配,需要采取轴承预加负荷测量以及定向装配等工艺措施,以使转轴的运动精度(径向跳动和轴向窜动量)达到允许值范围之内。图1是M1432A万能外圆磨床头架主轴系统。前后两端各有一对滚动轴承,每对轴承之间用内外挡圈隔开,由于轴承存在间隙,所以,必须调整内外挡圈的厚度,减少间隙,提高转轴旋转精度和刚度。 Precision machine tool spindle (grinder headstock spindle, etc.) rolling bearing assembly, the need to take the bearing preload measurement and directional assembly and other technical measures to make the shaft movement accuracy (radial runout and axial play) within the allowable value range . Figure 1 is M1432A Universal Cylindrical Grinder headstock spindle system. Front and rear ends have a pair of rolling bearings, each pair of bearings separated by the inner and outer rings, due to bearing clearance, so the thickness of the inner and outer rings must be adjusted to reduce the gap and improve the rotation accuracy and rigidity of the shaft.