以前我们在车床上钻削10毫米以下的孔时,是以手工操作来完成的,不管怎样注意,钻头还是经常折断。后来我们制做了一种自动进给的装置,不仅解决了以上的问题,并且操作也很简单,效率提高了2～3倍。装置的具体结构如图所示。当搬动手把时,由于杠杆销钉与滑动套连接为一体,因此能带动滑动套沿轴向移动。在钻削时 In the past, when we drilled holes under 10 mm on a lathe, we did it manually. At any rate, the drill bit often breaks. Later, we made an automatic feed device, not only to solve the above problems, and the operation is also very simple, the efficiency increased by 2 to 3 times. The specific structure of the device as shown. When moving the handlebar, the lever pin and the sliding sleeve are connected together so as to drive the sliding sleeve to move in the axial direction. When drilling