1. Falling down the drilling process, this kind of uniform honing, because the edge of the hole is not smooth at the beginning, the total area of contact between the whetstone and the edge of the hole is not large, and the contact pressure is large, and the protrusion of the edge of the hole is quickly worn away. The contact pressure of the surface of the whetstone is large, and the friction coefficient of the cutting whetstone adhesive is added to reduce the compressive strength of the fusion of the abrasive particles and the adhesive. When the lower part falls, the surface of the whetstone is exposed with new frosted particles, which means that the whetstone is self-sharpening.
2. The crushing and drilling process, with the development of honing, the surface of the hole is getting brighter and brighter, the total area of contact with the whetstone is getting larger and larger, the contact pressure of the total area of the enterprise is reduced, and the high drilling efficiency is reduced. In addition, the cut is small and fine, and the friction coefficient of the cutting on the adhesive is not large. Therefore, the abrasive grains of the whetstone fall very little. At this time, the cutting does not rely on new abrasive grains, but only drills from the top of the abrasive grains. Therefore, the top load of the frosted particles is quite large, and the frosted particles are easy to crack and break up and generate new drilling edges.
3. Blocking the drilling process. When honing again, the total area of contact between the whetstone and the surface of the hole is getting larger and larger. Fine cutting is deposited between the whetstone and the edge of the hole. It is not easy to remove, resulting in blockage of the whetstone. Smooth. Therefore, the ability of whetstone to drill is low, which is equal to grinding and polishing. If honing again, if the whetstone is blocked more seriously and the bonding force is blocked, the whetstone will lose the drilling ability and become more hot. The precision and roughness of the hole will be jeopardized. Honing should be completed as soon as possible.