CNC machining and its advantages and disadvantages

In fact, it is a CNC milling machine, which is an automatic machine tool equipped with a program control system. The control system can logically process the program with control code or other symbolic instructions, through the computer will be decoded, so that the machine action and processing parts. By cutting through the tool, the blank material is processed into semi-finished finished parts, etc.

CNC machining CNC machining refers to the processing of CNC machining tools. CNC refers to CNC machine tools are controlled by CNC machining language for programming, usually G-code. CNC machining G code language tells the CNC machine tool what Cartesian position coordinates to use for the processing tool, and control the tool feed rate and spindle speed, as well as the tool changer, coolant and other functions. CNC machining has great advantages over manual machining, such as CNC machining to produce parts very accurate and repeatable; CNC machining can produce manual machining can not be completed with complex shape of the parts. CNC machining technology is now commonly promoted, most of the machine shop has CNC machining capabilities, the most common CNC machining in a typical machine shop are CNC milling, CNC turning and CNC EDM wire cutting. The tool that performs CNC milling is called a CNC milling machine or CNC machining center. The lathe that performs the CNC turning process is called a CNC turning center. CNC machining G-code can be programmed manually, but usually machine shops use CAM software to automatically read CAD files and generate G-code programs to control the CNC machine tool.

CNC CNC machining has the following advantages.

① A large reduction in the number of tooling, processing the shape of complex parts do not require complex tooling. If you want to change the shape and size of the parts, only need to modify the parts processing program, suitable for new product development and reshaping.

②Stable machining quality, high machining accuracy, high repeatability, adapt to the processing requirements of the aircraft.

③Multi-species, small batch production under high productivity, can reduce production preparation, machine tool adjustment and process inspection time, and due to the use of the best cutting volume and reduce the cutting time.

④ can be processed by conventional methods difficult to process the complex surface, and even processing some unobservable processing parts.

The disadvantage of CNC machining is that the machine tool equipment is expensive, requiring a high level of maintenance personnel.