我厂在生产手扶拖拉机花键齿轮时,需要用花键心轴与花键孔定位,精车齿轮外径。开始我们采用静配合,但由于经常压入、压出工件,心轴容易变形,端部表面粘结积瘤,失去精度。所以,必须不断补充心轴,很不经济。为此,我们革新了一种装在死顶尖上的快速紧固装置,效果很好,即能减少装夹时间,提高工效,又保证产品质量。 I plant in the production of tractor spline gear, you need to use spline spindle and spline hole positioning, fine car gear diameter. At the beginning we used static fit, but due to the regular press-in, press out the workpiece, the mandrel easily deformed, the end surface of the accumulation of tumor, loss of accuracy. Therefore, we must constantly supplement the mandrel, it is not economical. For this reason, we have revolutionized a quick-fastening device on the top of the dead, which worked well to reduce setup time, improve work efficiency and ensure product quality.