A 600 mm high-hardness alloy steel gear blank was placed in the machine for 6 minutes and cut into spiral bevel gears used on heavy trucks. This morning, China's first full CNC spiral bevel gear dry cutting machine tool, YKA2260, with its own intellectual property rights, was launched in Hunan Zhongda Chuangyuan Co., Ltd. in Changsha Economic Development Zone. In recent years, with the rapid development of China's automobile, engineering machinery and other industries, the demand for precision spiral bevel gears is increasing, and the annual demand is about 6 million sets. However, the spiral bevel gear processing has always used the wet cutting method, that is, the oil and water are used to cool a large amount of heat generated when the machine tool cuts the parts, and the process is complicated and the energy consumption is huge. Surprisingly, scientists have found that when mechanical cutting reaches a certain high speed, the cutting is completed instantaneously, and the heat generated is very small. Without cooling, the heat can be directly dissipated in the air. However, to find and maintain such a critical state, there is a systematic breakthrough in the rigidity, structure, processing software, and process methods of CNC machine tools. Previously, only one company in the world, the United States and Germany, mastered the spiral bevel gear dry cutting technology. The reporter saw at the scene that the dry cutting machine tool processing a large car gear is less than wet cutting for 18 minutes, the power consumption is only about 25% of the wet cutting, no oil or water cooling is required, and zero pollution is achieved. Moreover, the price of this machine is less than half of that of similar foreign products.
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