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(一)改进三头钻:我厂过去在加工炉排链条(16×44×252扁铁制成)时,上面的三个孔是一个个钻出,工作效率低,质量差。后来由王金荣、杜瑞岳两同志提出建议,将三道工步改为一道工步,用三头钻来同时钻孔。三头钻如图1,装在一个齿轮箱中,并固緊在摇臂钻床主轴的非旋转部分。钻柄1装在主轴内,随着主轴一道旋转。主动齿轮2带着从动齿轮3、4旋转,三个钻头就同时将三个孔钻出。 (二)改进四头钻:我厂过去加工各种法蘭盤时,四个孔的中心距不相同,
(A) to improve the three heads: I plant in the past in the processing grate chain (16 × 44 × 252 flat iron made), the top three holes are drilled one by one, low efficiency, poor quality. Later, two comrades, Wang Jinrong and Du Ruiyue, put forward suggestions to change the three steps into a working step and drill holes simultaneously with three heads. The three-headed drill, shown in Figure 1, is mounted in a gearbox and secured to the non-rotating part of the main shaft of the radial drilling machine. Drill handle 1 installed in the spindle, with the spindle rotation. The driving gear 2 rotates with the driven gears 3 and 4, and the three drills simultaneously drill three holes. (B) to improve the four head drill: Our factory in the past processing a variety of flanges, the center of the four holes is not the same,