X52K立铣头主轴精度的调整,原设计是通过调整主轴前端面的四条螺钉(图1)来保证前轴承精度的。由于调整时螺钉的松紧很难一致,以及机床在运转中螺钉容易松动,因此,往往影响主轴运转精度。针对以上问题,北京第一机床厂在大修时,取消了主轴前端的四条调整螺钉,根据装配好的主轴、轴承,精确测量前轴承和主轴端面的间距,然后 X52K vertical milling head spindle accuracy adjustment, the original design is by adjusting the spindle front face of the four screws (Figure 1) to ensure the accuracy of the front bearing. As the adjustment of the screw is difficult to match the tension, and the machine is easy to loose screws in operation, therefore, often affect the accuracy of spindle operation. In response to the above problems, the Beijing No. 1 Machine Tool Plant in the overhaul, the cancellation of the spindle front four adjustment screws, according to the assembly of the spindle, bearings, accurate measurement of the front bearing and spindle end spacing, and then