A dressing diamond grinding depth of the grinding wheel, it is defective

And a dressing diamond grinding depth of the grinding wheel, which has the following drawbacks. (l) As the common abrasive grains in terms of binding agent or are much larger than  cutting tools  diamond grinding wheel, the dressing the grinding efficiency is low. (2) of the diamond abrasive grains itself has a strong cutting ability and  Diamond blade  of abrasive collide with abrasive grains are not broken off is to be flattened, thus sharpening the diamond grinding wheel surface after chip space is reduced, cutting diminished capacity, and prone to clogging,  Abrasive grinding wheel  and grinding heat large increase, affecting the quality of grinding, precision grinding down the surface damage increases.