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Development Of Ultra-high Speed Machining
Nov 21, 2018

Since Dr. Carl Salomon of Germany first proposed the concept of high-speed machining in the 1930s, after the mechanism and feasibility study in the 1950s, the process technology research in the 1970s, the high-speed cutting technology research in the 1980s, and the high-speed cutting in the early 1990s. The technology began to be put into practical use. By the late 1990s, commercial high-speed cutting machine tools have emerged in large numbers. At the beginning of the 21st century, high-speed cutting technology has been widely used in industrialized countries and is becoming the mainstream technology for cutting.

In 1976, Vought Company of the United States developed an ultra-high speed milling machine with a maximum speed of 20,000 rpm. Particularly striking is the production of engineering and machine tool research (PTW) at the Technical University of Darmstadt in the Federal Republic of Germany. Since 1978, systematic research on ultra-high-speed cutting mechanisms has been carried out, and high-speed cutting tests have been carried out on various metal and non-metal materials. Dozens of companies have provided more than 20 million marks to support this research work.

Since the mid-to-late 1980s, commercial ultra-high-speed cutting machine tools have emerged. Ultra-high-speed machine tools have evolved from single ultra-high-speed milling machines to ultra-high-speed turning and milling machines, drilling and milling machines, and even various high-speed machining centers.

Switzerland, the United Kingdom, and Japan have also launched their own ultra-high-speed machine tools. The maximum speed of the HG400III machining center spindle of Hitachi Seiki is 36000~40000r/min, and the rapid moving speed of the table is 36~40m/min. The HVM800 high-speed machining center of Ingersoll, Inc., which uses a linear motor, has a feed speed of 60 m/min.

In ultra-high-speed machining technology, super-hard material tools are the premise and prerequisite for ultra-high-speed machining. Ultra-high-speed cutting and grinding technology is the processing method of modern ultra-high-speed ultra-high-speed machining tools, while high-speed CNC machine tools and machining centers are Key equipment for ultra-high speed machining.

United States G. E company first succeeded in diamond synthesis in the 1950s, and first developed CBN in the 1960s. In the 1990s, the ceramic or resin bond CBN grinding wheel and diamond grinding wheel have a line speed of 125 m/s, and some can reach 150 m/s, while the single-layer electroplated CBN wheel can be 250 m/s.

In high-speed and ultra-high-speed grinding technology, many high-speed, ultra-high-speed grinding, deep-cutting and deep-feed grinding, deep-cut fast-feed grinding (ie HEDG), multi-plate grinding and multi-wheel grinding are developed. High-efficiency grinding, these high-speed and high-efficiency grinding technologies have been developed and applied in the past 20 years.