The core parts of key equipment must have light quality, high strength, high-temperature resistance, corrosion resistance, wear resistance, and other properties, while traditional materials can not meet the requirements. With the development of science and technology, new materials such as titanium alloy, nickel alloy, high-performance ceramics, ceramic reinforced metal matrix composites, and fiber reinforced composites are emerging. Although these materials can satisfy the performance requirements of core parts, their processing is extremely difficult to be a common problem, that scientific research institutions around the world have been trying to solve.
As an innovative technology to solve this problem, ultra-high-speed machining is highly expected by the manufacturing industry. The so-called ultra-high-speed machining technology refers to a brand-new processing technology that can change the machinability of materials, and improve the material removal rate, machining accuracy, and processing quality by improving the processing speed.
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Ultra-high-speed machining speed is more than 10 times faster than traditional machining speed, and materials are removed before deformation occurs in the process of ultra-high-speed machining. the scientific research team of the Southern University of Science and Technology found that when the processing speed reaches 700 km/h, the "difficult-to-process" characteristics of materials disappear and the processing of materials becomes "easy to turn".
Titanium alloy is a typical "hard-to-process material", which is referred to as "chewing gum" in the material. During the processing, it will be like a "sticking knife" like chewing gum sticking teeth, forming a "chip tumor".However, when the processing speed rises to the critical value, the titanium alloy no longer sticks to the knife, and there are no common problems in traditional machining such as workpiece burns. In addition, the processing damage will be inhibited with the increase in processing speed, forming the effect of skin damage.
Ultra-high-speed machining technology mainly includes research on ultra-high speed cutting and grinding mechanisms, manufacturing technology of ultra-high speed spindle units, manufacturing technology of ultra-high speed feed units, manufacturing technology of tools, and abrasives for ultra-high-speed machining, online automatic inspection, and control technology for ultra-high-speed machining, etc.
