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在活顶尖外壳铣出两对应平面(铣去1毫米左右)在两边平面之间均加工出通过中心的螺纹孔,装上一个钻壳体4既成一个带有钻中心孔的活顶尖。这样便可以节省通常要装卸钻夹头的时间,提高了工效。钻中心孔时把壳体3转向水平位置,并向前拉起,借两边弹簧5的作用,顶尖迅速准确的顶住钻壳体的中心孔内。固定在同一中心线上。钻完中心孔后,只要把钻壳体3
Milling out the two corresponding planes in the live top housing (milling to about 1 mm), through the center of the threaded hole between both sides of the plane, fitted with a drill housing 4 both as a live center with a drill hole. This will save you the time and effort required to load and unload the drill chuck and improve work efficiency. When the center hole is drilled, the shell body 3 is turned to the horizontal position and pulled upwards. By the action of the spring 5 on both sides, the center of the drill shell body is quickly and accurately pressed by the top. Fixed in the same center line. After drilling center hole, as long as the drill shell 3