As the main cutting tools, electroplated diamond grinding wheel is widely used, the hard particles on the surface are abrasive, play the role of cutting, and the adhesive material that the abrasive is bonded together is called the binder. Therefore, the electroplated grinding wheel is composed of three parts: abrasive, binder and void.

Generally speaking, on the surface of the electroplated diamond grinding wheel, each abrasive particle has a cutting edge, but after dressing the grinding wheel, there will be several cutting edges on the surface of the abrasive particle, which is called micro-cutting; Its distribution is uneven, uneven, and the unequal height nature of the distribution on the surface of the grinding wheel is also known as the unequal height of the micro edge.

In grinding, the micro edge or cutting edge of the abrasive particle has been gradually blunted by sharp wear, and by the action of grinding force, the original edges and corners are worn and more edges and corners appear. When the pressure on the particle exceeds the bonding force of the binder, the particle falls off on its own, revealing new, sharp particles.