1. After the surface of the sliding bearing is ground, the preferred repair plan should be repaired by the stonecutter method. In general, the sliding bearing has a margin for adjustment and repair, which can meet a repair cycle of the CNC cutting machine. If the research injury is very serious and the repair margin cannot be met, you need to consider replacing it. After the two-half tile sliding bearing is ground and injured, the gasket can be thinned and reassembled, and the inner hole of the ground bush can be scraped to require accuracy, and it can be used after repair.
2. When the journal is damaged, the method of grinding the journal and replacing the sliding bearing can be used. However, the grinding of the journal should not be too large, such as the spindle of the machine tool, the amount of grinding should not exceed the quenching of the surface of the journal, or the thickness of carburizing, nitriding, cyanide, and the hardness of the surface of the journal after grinding should not be lower than the lower limit of the original design ; For the drive shaft, the journal should not be smaller than the size of the front journal or boss in the assembly direction during assembly.
If the repair method is used to repair the journal, the influence of the welding repair process on the geometric accuracy, mechanical strength and surface hardness of the shaft must be considered. After the journal is repaired, it is generally necessary to reconfigure the journal as a sliding bearing (or sleeve).
