我厂生产的 35ｋＶ断路器的机构输出轴属于角杠杆类焊接成形件。输出轴焊接变形较大 ,给机构的调试增加了难度。焊后变形主要表现在 2 -2 0 ,2 -16,2 -15三组孔系各自同轴度超差 ,即用试棒(19.99ｍｍ ,15 .99ｍｍ ,14.98ｍｍ)不能对穿 ,见图 1。图 1　被焊工件示意 The output shaft of the 35kV circuit breakers produced by our factory belongs to the horn lever welding forming parts. Output shaft welding deformation larger, to the agency’s commissioning increased the difficulty. Post-weld deformation is mainly manifested in the 2- 20, 2- 16,2- 15 three sets of hole system over the difference between the coaxial, that is, with test sticks ( 19.99mm,  15 .99mm,  14.98mm) Can not wear, see Figure 1. Figure 1 shows the workpiece by welding