In 1931, Salomon's high-speed machining theory of Dongguan CNC processing plant obtained a German patent. He believed that "when the cutting speed is 5-10 times higher than the conventional cutting speed, the cutting temperature of the blade will begin to decline...". It can be concluded from the above that "... It is possible to improve productivity by using conventional cutting tools with high cutting speed..." unfortunately, modern research has not been able to fully verify this theory. For different materials, the temperature on the cutting edge decreases from a certain cutting speed.
For steel and cast iron in Dongguan CNC plant, the temperature drop is not big. But it's big for aluminum and other nonmetals. The definition of high speed cutting must be based on other factors.
According to the current technology, Dongguan CNC processing plant generally believes that "high speed" refers to the surface speed of 1-10 km / min (km / min), or about 3300-33000 ft / min (FT / min). The speed of more than 10 km / min belongs to the category of ultra-high speed, and it is also in the range of metal cutting in the laboratory. Obviously, the spindle speed required to obtain these surface cutting speeds is directly related to the tool diameter used. At present, the more significant trend is to use large diameter cutting tools, which has an important inspiration for the design of cutting tools. About the definition of high speed cutting, there are many viewpoints, many mysteries and many different methods.