Breaking the monopoly of foreign monopoly of the first spiral bevel gear dry cutting machine

Huasheng Online-Hunan Daily November 13 (Reporter Chen Yonggang correspondent Zou Peng Dai Jiejun) A 600 mm diameter high-hardness alloy steel gear blank was placed in the machine tool for 6 minutes to shape and shape the spiral cone used on heavy trucks. gear. This morning, China's first fully CNC spiral bevel gear dry cutting machine, YKA2260, with independent intellectual property rights, went offline in Changsha Economic Development Zone, Hunan Zhongda Chuangyuan.

In recent years, with the rapid development of China's automobile, construction machinery and other industries, the demand for precision spiral bevel gears is increasing, and the annual demand is about 6 million sets. However, spiral bevel gear machining has always used the wet cutting method, that is, oil and water are used to cool the large amount of heat generated when the machine tool cuts parts. The process is complicated and the energy consumption is huge. Wonderfully, scientists have discovered that when mechanical cutting reaches a certain high speed, cutting is instantaneously completed, and the amount of heat generated is rather small. Without cooling, heat can be dissipated directly in the air. However, to find and maintain such a critical state requires a systematic breakthrough in CNC machine tool rigidity, structure, processing software, and process methods. Previously, only one company in the United States and Germany had mastered the spiral bevel gear dry cutting technology.

Li Guosheng, chairman of “Zhongda Chuangyuan” introduced that they have established the first CNC spiral bevel gear research institute, gear testing room, software and electrical testing room, etc. After numerous trials, they have finally overcome this major technical problem. The reporter saw at the scene that dry-cutting machining of a large gear of a car takes less than 18 minutes than wet cutting, and the power consumption is only about 25% of wet cutting. No oil or water cooling is required to achieve zero pollution. Moreover, the price of such a machine tool is less than half that of similar foreign products.