At 23:00 on February 19, 2013 Beijing time, HTC's latest flagship model One was officially released in London, UK The configuration of the mobile phone has been comprehensively upgraded, and the process has also been further strengthened. The M7 uses an integrated aluminum alloy shell. Like the iPhone 5, each shell of the M7 is processed by a separate CNC machine tool.

So what is CNC? CNC (numerical control machine tool) is the abbreviation of computer numerical control, which is an automatic machine tool controlled by program. The control system can logically process the program with control code or other symbolic instructions, and decode it through the computer, so that the machine tool can perform the specified action, and the blank can be processed into semi-finished finished parts through tool cutting. The advantages of CNC machine tools are high machining accuracy and stable machining quality, so that the products produced can be well processed.

There are also many kinds of CNC milling machines, including simple CNC milling machines, ordinary CNC milling machines and CNC profiling milling machines. Among them, CNC profiling milling machines are mainly used for milling various complex cavity molds or workpieces, especially for workpieces composed of irregular three-dimensional surfaces and complex boundaries.

Because such products as mobile phone casings have high requirements on both complexity and accuracy, they involve a lot of processing tools, and NC machine tools will also change corresponding tools in the process of processing to meet different processing needs.

Unlike ordinary injection molds, NC milling machines can only process one product at a time, so the production speed of products is certainly not comparable to that of plastic shells that can be mass produced. However, it is optimistic that high-speed machining is also becoming increasingly mature in technology. It is characterized by high efficiency, high precision and high surface quality Photoelectric engineering, instrumentation and other industries have been more and more widely used, and have achieved significant technical and economic benefits. It is an important part of modern advanced manufacturing technology. Generally speaking, the cutting speed and feed speed of a high-speed machining center are about 10 times that of a conventional machining center, which means that the spindle speed exceeds 20000 r/min, or even reaches 60000 r/min; The cutting speed reaches 60m/min, even 120m/min. Not only that, in order to reduce the auxiliary time, it is required to achieve high speed in an instant and stop in an instant during high-speed travel. For the multi axis machining center, it is required to realize automatic tool change in the shortest time and minimize the cutting cutting time. The movement speed of the rotary table and the fork spindle is 5~6 times higher than that of the traditional transmission mode. In order to meet the above requirements, the host needs to be equipped with high-performance functional components, such as high-speed motorized spindle, linear motor, torque motor, high-speed automatic tool change mechanism and control system, while having high dynamic and static stiffness.