What are the advantages of CNC machining?

What are the advantages of CNC machining?

Choosing aircraft components with complex surfaces as machining objects from the beginning is a key challenge in solving general machining methods in CNC machining. The biggest feature of CNC machining in Jiaozhou is the use of a punching table (or tape) to control the machine for automatic machining. Aircraft, rockets, and engine components each have different characteristics, so the size and shape of their components and parts are complex. Engine zero, small part size, high accuracy. Therefore, the aircraft, rocket manufacturing departments, and engine manufacturing departments choose different digital control machines. In aircraft and rocket manufacturing, continuous control large CNC milling machines are mainly used, while in engine manufacturing, both continuous control CNC machines and point control CNC machines (such as CNC drills, CNC boring machines, machining centers, etc.) are used simultaneously.

What are the advantages of CNC machining? Let's take a brief look together.

Significantly reduce the number of work uniforms, and processing complex shaped parts does not require complex work uniforms. To change the appearance and size of components, simply modify the machining process of the components that is suitable for new product development and deformation. Stable processing quality, high processing accuracy, high repeatability, suitable for aircraft processing needs. When producing multiple varieties and small batches, production efficiency is higher, which can reduce production preparation, machine tool adjustment, and process inspection time. Using the optimal cutting amount can reduce cutting time. Complex surfaces that are difficult to machine using conventional methods, and even machining parts that cannot be observed. The disadvantage of CNC machining is the high cost of mechanical equipment, which requires maintenance personnel to have a high level of proficiency.

In order to improve the level of production automation, shorten programming time, and reduce CNC machining costs, the aerospace industry has developed and used a series of advanced CNC machining technologies. Like computer numerical control, using small or micro computers instead of digital control system controllers, using software stored on the computer to perform calculation and control functions. This soft connected computer numerical control system is gradually replacing the initial state numerical control system. Direct digital control is the use of a computer to directly control multiple digital control machines, suitable for small-scale deployment and short-term production of aircraft. The ideal control system is an adaptive control system that can continuously change processing parameters. The system itself is complex and costly, but it can improve processing efficiency and quality. The development of digital control is not only about improving digital control systems and machine tools in hardware, but also about the development of software. Computer assisted programming (also known as automatic programming) refers to programmers writing programs in numerical control language, then inputting them into a computer for translation, and finally automatically outputting perforated magnetic tapes or magnetic tapes by the computer. The widely used CNC language is APT language. It is generally divided into main processing programs and post-processing programs. The former calculates the tool path by translating the program written by the programmer. The latter compiles the tool path into a machining program for CNC machine tools.

Precision machining