我厂机械加工设备不齐全,为了解决换热器花板的钻孔问题,制成一种简易可调式钻杆,顺利解决了生产关键。一、结构原理(见附图) 刀头1用(D_3)/(d_(c3))配合置入钻杆2的横孔中。杠杆7的上、下端分别与顶丝5 的顶端和刀头1的末端活动连接,并通过销钉6和钻杆2活动连接起来。手柄3用螺帽4固定在顶丝5的另一端。二、使用方法操作手柄3把刀头1和杠杆7调整到图中假想线的位置后,便可将钻杆置入待加工的花板孔中,根据钻杆 Our factory’s machinery processing equipment is not complete, in order to solve the problem of the drilling of the heat exchanger plate, a simple and adjustable drill pipe is made, and the key to production is successfully solved. First, the structural principle (see the drawing) The cutter head 1 is fitted into the transverse hole of drill pipe 2 with (D_3)/(d_(c3)). The upper and lower ends of the lever 7 are movably connected with the top end of the jack wire 5 and the end of the cutter head 1, respectively, and are operatively connected by the pin 6 and the drill rod 2. The handle 3 is fixed to the other end of the top wire 5 with a nut 4 . Second, the use of the operating handle 3 handle 1 and lever 7 is adjusted to the position of the imaginary line in the figure, the drill pipe can be placed into the hole to be processed, according to the drill pipe