Grinding wheel dressing required Reason

In the grinding process, the abrasive cutting disc in friction, compression, its rounded edges gradually become blunt, or when grinding ductile materials, debris impaction often in the pores in the surface of the grinding wheels, the grinding wheel piece surface blockage, and finally the loss of grinding wheel cutting ability. At this time, will produce between the grinding wheel and workpiece slippage, and may cause vibration and noise occur, the grinding efficiency decreases, the surface roughness is deteriorated. At the same time due to the increased grinding force and grinding heat, causing deformation and impact grinding precision work, serious cases will make the ground surface burns and small cracks appear. In addition, due to the different grinding wheel and abrasive hardness uneven working conditions, so that the working surface of grinding wheel wear is uneven, ranging from various parts of the grain shed much, resulting in the loss of grinding wheel shape accuracy and surface appearance Viscosity surface roughness degree.