High-speed rotary cutting tools used include face milling, end mills, mold cutter, rasp and so on. When the high-speed rotating spindle, tool to be under a lot of centrifugal force. By the formula (3) shows that the size of the centrifugal force proportional to the square of the rotational speed, while the unbalance u of size. When the speed of up to 10,000 ~ 20,000r / min, the centrifugal force acting on the tool may be far more than the role of cutting force, becoming the main tool of damage, such as face milling may burst, die cutters and other tools slender happen bending. So, for high-speed cutting tool materials, structure, fixture, balancing and other aspects of a number of special requirements, such as the German national standards din6589-1 drafted in 1994 and iso15641 international standards promulgated in September 2001, "the high-speed rotary cutter the security requirements "on the provision of design, manufacture, and should be used with high-speed cutter safety matters test methods attention.

     As China's CNC machine tools, especially speed machine tools (eg milling spindle speed has reached the highest 35,000r / min) used increasingly, some domestic tool manufacturers have started producing high-speed cutter. In the high-speed cutter design, manufacture, use should pay full attention to and learn from foreign advanced experience in the security aspects of the tool.