The so-called high-efficiency tool is literally high in efficiency and can be significantly and multiplied in comparison with conventional conventional tools in terms of machining efficiency and service life. This is a different concept from high-speed cutting. It can be analyzed by two types of tool examples: drill bit and cutting knife.
U-drill is the first high-efficiency shallow hole drill developed by Sandvik Coromant, which can achieve a maximum length to diameter ratio of 4 times. The appearance of the U-drill changed the efficiency of the hole machining. The cutter head part is a cemented carbide insert. It uses internal cooling and a hard alloy spiral arbor. Its processing efficiency is 3 to 5 times higher than that of ordinary high-speed steel twist drill. . What is the difference between the two tools? The high-speed steel used in ordinary twist drills has poor heat resistance and poor red hardness, and although it has good toughness, it is not wear-resistant. The tool of cemented carbide has great advantages in wear resistance, but the cost of twist drill made of cemented carbide is too high, and it is not suitable for large-scale promotion. Therefore, it can be considered that a tool similar to U-drill is a typical hole machining efficient tool.
Cutting knives currently used on CNC machine tools are generally highly efficient tools. Conventional machine tools have low spindle speeds and can only use high-speed steel cutters. The cutting efficiency is not high enough when cutting steel workpieces, not to mention the various alloy workpieces, and in addition to the long cutting time due to low speed. It will be easy to use a knife, causing damage to the machine. The indexable carbide insert tool with the machine clamp makes the blade easy to change, which can achieve a large amount of cutting and higher cutting efficiency.
The use of efficient tools also requires technical training and publicity efforts, and the level of awareness of business managers needs to be improved. Conventional machining companies use low-speed common tools to summarize the appropriate cutting parameters and make it a habit, while at the same time avoiding high-speed cutting, which is believed to cause damage to the tool. However, after replacing the high-efficiency equipment of CNC machine tools, the use of high-efficiency tools will lead to machining misunderstandings. In fact, unreasonable high speed will cause tool wear, but it is important to choose reasonable cutting parameters. Many companies still use low-speed machining after purchasing high-efficiency tungsten steel or carbide tools, but tools are more susceptible to damage. This problem is common.
There are many things that need to be done to change this situation. For example, the Tianjin Metal Cutting Application Technology Association organizes an event every once in a while to popularize and improve the knowledge of efficient tool application for workers who come to the technical level. It is also possible to publish some popular articles in related publications. Let more workers who see the magazine include technicians and business managers, and strive to improve their technical level and processing awareness, and further increase the popularity of CNC equipment.
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