What are the main applications of aviation CNC machining?

In the aviation field, CNC machining (computer numerical control machining) has become one of the core technologies in aviation component manufacturing due to its high precision, high efficiency, and high automation, and is widely used in multiple key links of the aviation industry chain. The following are its main application scenarios and specific explanations:

1、 Processing of aviation structural components Aviation structural components are key components that make up the aircraft skeleton and shape, and need to meet the requirements of high strength, lightweight, and complex surfaces. The application of CNC machining in this field includes: Airframe frame and wing ribs Processing object: Structural components such as fuselage frames and wing ribs made of aluminum alloy, titanium alloy, or composite materials, which require the formation of complex cavities, ribs, and connecting holes. Technical advantage: Multiple curved surfaces can be formed in one go through a five axis CNC machine, ensuring the dimensional accuracy (tolerance up to ± 0.005mm) and surface smoothness of structural components, reducing assembly errors. Typical case: The fuselage frames of Boeing 787 and Airbus A350 extensively use titanium alloy integral structural components machined by CNC milling, reducing weight by more than 20%. Landing gear and joints Processing object: High strength steel or titanium alloy landing gear struts, connecting joints and other load-bearing components that need to withstand the huge loads during aircraft takeoff and landing. Technical features: Through CNC turning and milling composite processing, deep hole machining (such as holes with a diameter of 10mm and a depth of 500mm) and precision thread machining are achieved to ensure the strength and fatigue life of the components.

2、 Aircraft engine component processing Aircraft engines are the "heart" of airplanes, and their components require extremely high precision. CNC machining is indispensable in the following key components: Turbine blades and guide vanes Processing object: Turbine blades made of nickel based high-temperature alloys or single crystal alloys, with complex hollow cooling structures and twisted surfaces. Processing technology: Five axis CNC milling combined with electrical discharge machining (EDM) to achieve precision machining of the inner flow channel and outer surface of the blade; Laser drilling technology is used to process micro sized cooling holes (diameter 0.1-0.5mm). Accuracy requirements: Surface error ≤ 0.003mm, surface roughness Ra ≤ 0.4 μ m, ensuring stable operation of the blade in high temperature and high pressure environments. Engine casing and combustion chamber Processing object: titanium alloy or high-temperature alloy casing, which needs to accommodate core components such as turbines and compressors; The combustion chamber components need to withstand extreme temperatures. Processing technology: CNC milling of the complex inner cavity and installation interface of the machine casing, combined with CNC boring to achieve coaxiality requirements for multiple sets of hole systems (tolerance ≤ 0.01mm); Using high-speed machining (HSM) technology to process thin-walled structures (wall thickness ≤ 1mm) of combustion chambers to avoid thermal deformation.