1974年1月,我厂133车间1,000T冷剪机机架开裂,被迫停产大修。决定将紧固机架三件为一体的二个螺栓孔(长2米)进行精加工后配过渡配合的轴销加固。为了达到这个目的必须进行配镗。我厂机修车间机修工段职工决定在现物用c630车床镗孔。其办法是用现场的方钢坯和枕木把平板和车床垫 January 1974, I workshop 133T 1,000T cold shear machine rack cracking, forced to stop production overhaul. It is decided to fasten the two bolt holes (2 meters in length) which fasten the three pieces of the rack to the shaft pins after finishing with the transition fit. In order to achieve this goal must be equipped with boring. Our factory mechanic workshop mechanic workers decided to use the existing c630 lathe boring. Its approach is to use the site of the billet and sleepers flatbed and lathe mattress