Our rework plan is as follows:1. The first step is to weld the four large holes of the box body by laser cladding technology at the position shown in the figure, and thicken about 0.5mm on one sideProcessing experience, this kind of welding on the parts themselves almost does not produce deformation.2. In the second step, the parting surfaces of the upper and lower boxes are milled, and the thickness of one side is about 0.3mm;3. Finally, correct the two sides of the box in place, install the positioning pins, tighten the bolts, re process the four large holes to the drawing requirements, and mill the assembly datum plane on both sides of the box.