Necessity and Benefits of High Speed Grinding

All the time, the grinding has been developing along the direction of "Super Precision, High Efficiency". In recent years, high speed grinding has been a hotspot in the field of grinding. Ultra-high speed grinding develops very fast in Europe, Japan, the United States and other developed countries, which is known as "The peak of the modern grinding technology”. As the development of China's aerospace, automotive industry, wind power industry and bearing industry, each abrasives products manufacturer puts forward higher requirements for grinding efficiency, precision and processing cost.

Material removal rate Q 'w reflects the grinding efficiency of grinding wheel, Q'w = π*Dw*Vp [mm3/s/mm] (Dw[mm]– the diameter of workpiece, Vp [mm/s] – the feed speed of grinding)

Material removal rate is proportional to the grinding feed speed of grinding wheel, but increasing the feed rate will lead to increase chip thickness, bad roughness, high grinding load and grinding temperature, the workpiece deformation and other adverse consequences.

The thickness of grinding chip is inversely proportional to the linear velocity of grinding wheel, but directly proportional to the feed speed. Improving the grinding linear velocity of grinding wheel, the particle number to participate in grinding unit time will be increased significantly, and the thinckness of grinding chip is also decreased, which will greatly reduce the grinding force and the workpiece deformation, but improve the precision and the surface roughness of the workpieces.

Therefore, the ultra-high speed grinding can:

A) significantly improve grinding efficiency and reduce the amount of equipments;

B) reduce the workpiece deformation and improve machining precision of parts;

C) improve the surface quality of machined workpieces;

D) prolong the service life of grinding wheel.