我车间在修理12呎龙门刨床时,发现床身的四个轴孔都已偏心,相差4～6公厘。如果不重镗修正,就不能再用了。要对这样大的床身进行镗孔,就必须有大型镗床,但我厂没有这样的设备,因而很难解决这问题。后来大家想出办法:利用摇臂钻床来镗削。经实际使用证明,质量完全合格,轴孔的平行度是0.06/800,同心度是0.10,光洁度是5 ～6,解决了大修工作中的困难。现将我们的方法介绍出来,供大家参考。 1)将床身1翻转,卧放在摇臂钻床旁边的适当地方,底面用活动斜铁3 When I was repairing a 12-foot gantry, I found that the four shaft holes in the bed were eccentric, a difference of 4 to 6 mm. If you do not re-boring amendment, it can not be used again. To boring such a large bed, you must have a large boring machine, but I do not have such equipment, so it is difficult to solve this problem. Later, we came up with a solution: the use of radial drilling machine to boring. The actual use of proof, the quality of fully qualified, the parallel axis hole is 0.06 / 800, concentricity is 0.10, the finish is 5-6, to solve the difficulties in the overhaul. Now introduce our method, for your reference. 1) The bed 1 flip, lying on the rocker arm drill next to the appropriate place, the bottom with the activities of the rocker 3