More bronze and other metals as binder, made by high-temperature sintering method, its high bonding strength, good molding, high temperature resistance, thermal conductivity and wear resistance, long service life, can withstand a large load. Because the grinding wheel in the sintering process inevitably exists shrinkage and deformation, so the grinding wheel must be shaped before use, but the grinding wheel trimming is more difficult.

At present, the grinding wheel to roll shaping method commonly used in production is not only time-consuming and laborious in trimming, but also has more shedding of diamond particles during trimming, the consumption of trimming grinding wheel itself is very large, and the precision of shaping is low. In recent years, scholars in various countries have carried out the application of special processing methods to repair metal binder diamond grinding wheel research work, mainly electrolytic trimming method, EDM trimming method and composite trimming method. The electrolytic trimming method is fast, but the shaping precision is not high, the electric spark trimming method has high shaping precision, can not only be shaped and can be repaired, but the shaping speed is slow, the composite trimming method has electrolytic EDM composite trimming method, mechanical chemistry composite trimming method, etc., the trimming effect is good, but the system is more complex, Therefore, the trimming problem of sintered diamond grinding wheel is still not solved well. 

In addition, because the manufacturing process of the grinding wheel determines that its surface morphology is random, the geometry of each abrasive particles, distribution and the height of the cutting edge are inconsistent, so the grinding only a few higher cutting edge cut to the workpiece, limiting the grinding quality and grinding efficiency of the further improvement.