在铣床上铣齿条时,一般是依靠刻度盘来分齿的,这样很不方便,一不留心就会出错。如果采用一种专门的分齿机构那就好多了。附图所示就是一种专门的分齿机构。1是一个45°的螺旋齿轮,装在铣床工作台的长丝杆上,用锁紧圈2锁紧,3是装在迥转轴4上的螺旋齿轮,与1啮合。5是调整螺母,借以消除两齿轮嚙合时的间隙,以保证分齿的精确性。迥转轴4依靠零件6和7固定在铣床工作台上,8是 Milling the rack on the milling machine, generally rely on the dial to sub-tooth, so very inconvenient, a careless mistake. If you use a special division gear that much better. The figure shows a special sub-gear mechanism. 1 is a 45 ° helical gear, mounted on the milling machine table screw rod, with the locking ring 2 locking, 3 is mounted on the shaft 4 on the helical gear, and 1 engaged. 5 is to adjust the nut, in order to eliminate the gap between the two gears meshing, in order to ensure the accuracy of sub-tooth. Relying on the rotating shaft 4 parts 6 and 7 fixed on the milling table, 8 is