In recent years, domestic and foreign high-speed grinding machine varieties have cylindrical grinder, crankshaft grinder, cam grinder, bearing grinder, surface grinder, internal grinding machine. Industrial developed countries in the promotion of 45-60m / s high-speed grinding, 80-150m / s high-speed grinding has been applied in some countries. China has produced grinding speed of 50-80m / s cylindrical grinder, concave wheel grinder and bearing grinder.
At present, foreign high-speed grinding is more of the bearing industry grinding bearing ring inside and outside the groove, high-speed grinding in the engine industry has also been widely used, such as the United States AIM grinding V8 engine crankshaft connecting rod with high-speed grinding, Newall company high speed grinding forged steel 4 crank car crankshaft. Many countries also use high-speed grinding wheel crank grinding (with three, four, or even seven, eight grinding wheel at the same time), greatly improving the grinding efficiency.
High-speed grinding is applicable to most grades of steel, but it is not suitable for materials that are prone to cracking during grinding, such as gold alloys. For some materials, such as stainless steel, when the wheel speed is higher than 45m / s, the grinding efficiency is reduced.
Due to high-speed grinding on the machine, grinding wheel, cooling and safety technology side have special requirements, which will increase the cost of machine tools. Therefore, the current high-speed grinding is only used in a small number of workpieces.