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所设计的钻孔主轴箱,采用主推力轴承e、推力轴承f和两个向心推力轴承g、h,在箱体a和b上支承安装刀具的主轴c。主推力轴承e设置在向心推力轴承g和h之间。预紧元件i对推力轴承。和f进行加载。向心推力轴承g和h之间的主轴直径k要小于或等于位于刀具一侧的向心推力轴承g处的主轴直径1。这样,不仅允许选用绝对刚性较低一点的构件,而且也允许降低刀具一侧主轴悬伸部分对径向支承部分的比值。这就既可扩大这类主轴箱的使用范围,也可提高主轴一箱体系统的刚性,从而获得比传统主轴箱(按西德工业标准DIN69001)更大的应用范围。
The design of the drilling spindle box, the use of the main thrust bearing e, thrust bearing f and two radial thrust bearings g, h, in the box a and b supporting the installation of the tool spindle c. The main thrust bearing e is set between the radial bearings g and h. Pre-tightening element i on the thrust bearing. And f to load. The diameter k of the main shaft between the radial bearings g and h should be less than or equal to the diameter of the main shaft 1 at the radial thrust bearing g on the tool side. This not only allows the selection of components with a lower absolute rigidity but also allows a reduction of the ratio of the overhang of the spindle to the radial support on the tool side. This expands the use of this type of headstock and increases the rigidity of the spindle-case system, resulting in a greater range of applications than the traditional headstock (to DIN 69001).