Dr German Carl Salomon is put forward for the first time since the 1930 s since the concept of high speed cutting, through the mechanism of the 50 s and feasibility research, technology research in the 70 s, 80 s comprehensive system of high speed cutting technology research, to the early 90 s, high speed cutting technology into the practical application, to the late 90 s, commercialization of high speed cutting machine tool, at the beginning of the 21st century, high-speed cutting technology widely applied in industrial developed country, is becoming the mainstream of machining technology.
In 1976, Vought developed an ultra-high speed milling machine with a maximum speed of 20000rpm. In particular, the production engineering and machine tool research (PTW) of Darmstadt university of technology in the federal republic of Germany has been systematically studying the mechanism of ultra-high speed cutting (HSM) since 1978, and conducting HSM experiments on various metal and non-metallic materials. The federal republic of Germany has organized dozens of enterprises and provided more than 20 million marks to support the research work.
Since the mid and late 1980s, commercial ultra-high speed cutting machine tools continue to emerge, ultra-high speed machine tools from a single ultra-high speed milling machine into ultra-high speed milling machine, drilling milling machine and even a variety of high speed machining centers.
Switzerland, the United Kingdom, Japan have also launched their own ultra-high-speed machine tools. The HG400III machining center of Hitachi precision machine has the highest spindle speed of 36000~40000r/min, and the fast moving speed of the table is 36~40m/min. The HVM800 high speed machining center of Ingersoll (USA), which USES linear motor, has a feed moving speed of 60m/min.
In ultra-high-speed machining technology, ultra-hard material tools are the premise and prerequisite for ultra-high-speed machining, ultra-high-speed cutting grinding technology is the modern ultra-high-speed ultra-high-speed machining tool processing technology, and high-speed CNC machine tools and machining centers are the key equipment to achieve ultra-high-speed machining.
At present, tool materials have been developed from carbon steel and alloy tool steel, high speed steel, hard alloy steel and ceramic materials to artificial diamond and polycrystalline diamond (PCD), cubic boron nitride and polycrystalline cubic boron nitride (CBN). Cutting speed also increases from the previous 12m/min to over 1200m/min with the innovation of tool materials. In the past, grinding wheel materials mainly used corundum series, silicon carbide series and so on.
G the United States. E company first achieved success in artificial synthesis of diamond in 1950s, and first developed CBN in 1960s. In the 1990s, the linear speed of ceramic or resin bonded CBN grinding wheel and diamond grinding wheel can reach 125m/s, some can reach 150m/s, while the single-layer electroplated CBN grinding wheel can reach 250m/s.
In terms of high-speed and ultra-high-speed grinding technologies, many high-speed and high-efficiency grinding technologies, such as high-speed and ultra-high-speed grinding, deep-feed and slow-feed grinding, deep-feed and fast-feed grinding (HEDG), multi-wheel and multi-wheel rack grinding, have been developed and applied in recent 20 years.