What Are CNC Machining Services For Aerospace?

Aerospace technician inspecting helicopter rotor assembly with CNC machined parts in an aircraft hangar

CNC machining services provide unrivaled precision, efficiency, and flexibility in the manufacture of critical components for the aerospace industry. CNC machining is the main process for making aerospace components. It stands out for its ability to make parts with the tight tolerances and complex shapes needed for aerospace. It uses computer-controlled machines to shape materials, making the parts more resistant to the tough conditions and forces of flight. CNC machining can make parts that meet the industry’s strict standards. These parts include small fittings and connectors, as well as key components like turbine blades and landing gear. Yonglihao Machinery looks at why aerospace, in particular, likes CNC machining.

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What is Aerospace CNC Machining?

Aerospace CNC machining is a type of computer numerical control (CNC) machining for the aerospace industry. It uses computer-controlled machines to cut, shape, and make parts in many materials with extreme precision. It ensures that each part meets the exact dimensions and tolerances needed for aerospace.

Aerospace CNC machining and standard CNC machining differ in one main way. The aerospace industry needs stricter accuracy, materials, and quality control.

Aircraft and spacecraft have high standards for safety and performance. So, aerospace components must have tight tolerances. Aerospace CNC machining often requires cutting advanced materials. These include titanium, aluminum alloys, and engineering plastics. They have the strength, durability, and lightness needed for aerospace.

Aerospace CNC machining involves precise and complex techniques. These include five-axis machining. They are for making intricate shapes and geometries common in aerospace parts. These shapes are less common in other industries. The machining process also includes tough tests and quality checks. They ensure that each part meets the strict safety and reliability standards of the aerospace industry.

Standard CNC machining serves many industries. They have varying precision and material needs. However, aerospace CNC machining is highly specialized. It focuses on the highest precision, special materials, and top quality.

Precision CNC machining of an aerospace turbine component on an industrial milling machine

Applications and Benefits of Aerospace CNC Machining

Aerospace CNC machining is key to producing a range of complex components essential to the aerospace industry. This includes many parts, like electrical connectors and valve components. It also includes oxygen production components, shafts, and more. From commercial airplanes to spacecraft, each component plays a vital role in the functionality and safety of aerospace vehicles.


Electrical Connectors: These connectors are critical to an aircraft’s electrical system. They must be the right size to ensure a reliable connection in all conditions.

Valve Assemblies: They are small. But, they are critical. They control fluid flow in many aircraft systems. These include fuel and hydraulics.

Oxygen Generation Assemblies: These parts are critical. They maintain the aircraft’s life support systems. They must be made to precise specs to ensure reliability and safety.

Shafts and Gearboxes: Key components of an aircraft’s power transmission system need high precision. They need it to operate well.


CNC machining is used in the aerospace industry. It offers many benefits. They make it a key tool in making aerospace components.

Lightweight components: CNC machining helps make strong, light parts. It does this by enabling the precise machining of parts made from advanced materials. This is crucial in aerospace. Lighter parts can greatly help fuel efficiency and performance.

High Precision: CNC machining can make parts with very tight tolerances. This ensures the high precision needed for aerospace components. This precision is critical to the safety and functionality of aerospace vehicles, where every micron counts.

Efficiency: CNC machining automates the manufacturing process, resulting in faster and more efficient production. This automation allows parts to be made consistently with few errors. It cuts waste and boosts productivity.

Close-up of a CNC machine tooling a metal gear component with high accuracy for aerospace use.

Accuracy in Aerospace Machining

Aerospace requires high safety and performance. Even a slight deviation in component size can cause major and costly failures. These failures can be life-threatening. Aerospace machining accuracy is therefore of particular importance.

Precision affects every part of an aerospace vehicle. It affects the toughness of engine parts, the reliability of landing gear, and the integrity of the airframe. Each part must fit perfectly with the others. This is key for the strength and aerodynamics of the aircraft or spacecraft. For example, making turbine blades is critical to jet engines. It requires very tight tolerances. Imperfections can alter airflow and engine efficiency. This leads to lower performance or failure.

Also, machining parts with precision, like fuselage panels and wings, can affect a vehicle’s aerodynamics. Precision machining in these areas reduces drag and improves lift. This is critical for fuel efficiency and performance. Aerospace CNC machining has five-axis machining and high-speed tech. These allow manufacturers to meet tough tolerances and specs with high repeatability and minimal error.

Quality inspection of a CNC machined aerospace part using a coordinate measuring machine for precision verification.

Materials and Technologies in Aerospace CNC Machining

In aerospace CNC machining, the choice of materials and cutting-edge tech affects the performance, durability, and weight of aerospace parts. This choice also affects the efficiency and safety of aerospace vehicles.

Commonly Used Materials

Aluminum and Its Alloys: Aluminum has an excellent strength-to-weight ratio. It is widely used in aerospace for parts like fuselages and wings. Its alloys, such as 7075, contain zinc. They offer high strength and fatigue resistance. These are essential for structural parts.

Titanium: Titanium is known for its great strength, low weight, and resistance to corrosion. It is the top choice for critical aerospace applications. It is used in engine components, airframes, and space shuttle modules. It keeps high performance under extreme conditions.

Engineering Plastics: Materials like PEEK stand out. They have low weight, high heat resistance, and strong mechanics. These plastics are used in both prototyping and end-use parts. They are ideal for non-structural components like cabin interiors and insulation.

Cutting-edge Technologies

5-Axis Machining: This advanced machining process allows a part or tool to be moved along five axes at the same time. This ability allows for machining many complex shapes. For example, it can make turbine blades and wings in aerospace parts. This type of machining improves efficiency and reduces errors. It does this by increasing accuracy and cutting setup times. It also lets machinists work on complex parts in a single setup.

High-speed machining: This technology involves milling at higher speeds and feed rates. This can cut production time and improve surface finish. Fast machining is important to aerospace. It cuts time from design to production, which impacts program schedules.

Additive Manufacturing (3D Printing): Additive manufacturing is not a form of CNC machining. But, it complements CNC in aerospace. It allows for the creation of complex parts. Their shapes would be hard or impossible to make with just traditional machining. This tech is great for prototyping. It makes lightweight, complex structures that reduce the weight of planes.

Aerospace Parts Made with CNC Machining

CNC machining services are versatile and capable. They can make a wide variety of parts. These range from critical parts under huge loads to parts needing extreme precision. The precision ensures the safety and efficiency of aerospace operations. Below are the aerospace parts. They were made using CNC machine tools by Yonglihao Machinery.

Electrical connectors and housings: These parts make an aircraft’s electrical system reliable. They need precise connections and functions. This ensures they work properly under flight stress.

Valve components: From fuel systems to environmental controls, valves regulate the flow of fluids and gases. CNC machining ensures that these parts meet tight tolerances. They are required for aerospace.

Landing gear components: These parts are critical to safe takeoffs and landings. They include struts, wheels, and actuators. They must be able to withstand significant stresses and impacts.

Engine components: Turbine blades, compressor discs, and engine casings need to be machined precisely. This is to make sure the aircraft’s power plant is efficient and reliable.

Structural Components: Fuselage frames, wing ribs, and bulkheads ensure the structural integrity of the aircraft. CNC machining gives these components the strength and precision needed for airworthiness.

Aerospace Fixtures and Components: These include jigs, fixtures and brackets that help assemble and maintain aerospace vehicles. Precision manufacturing is critical to ensure compatibility and functionality.

Avionics mounts: Safety enclosures and brackets are critical to modern aircraft. They are for navigation, communications, and control systems. They need precision machining to fit and work well.

Yonglihao Machinery’s CNC machining services use advanced materials, tight tolerances, and complex shapes. We make components that meet the high standards for safety, performance, and reliability needed for aerospace.

Active CNC milling process shaping an intricate aerospace turbine blade

Quality Assurance Practices

In addition to CMM inspection, many other quality practices are key. They maintain high standards for CNC machining in aerospace.

First Article Inspection (FAI): This inspection is performed on the first part produced in the manufacturing process. It checks that the process will make a part that meets specs. It does this before full production starts.

Statistical Process Control (SPC): SPC uses statistical methods to monitor the manufacturing process. This allows us to find and fix manufacturing errors quickly.

Material Certification: Material certification and traceability verify material properties. They also verify the origin of materials. This is to ensure they are suitable for aerospace applications.

These quality assurance measures are the basis for making reliable, high-performance parts. They are for the aerospace industry. Rigorous quality assurance measures include CMM dimensional inspection. They help the aerospace CNC machining sector keep the highest quality and accuracy. This improves the safety and efficiency of aerospace vehicles.


Yonglihao Machinery utilizes state-of-the-art CNC machining technology including 5-axis CNC machine tools to produce complex and highly accurate parts. Our materials expertise ranges from high-performance alloys such as aluminum and titanium to advanced engineering plastics, ensuring that every part we make meets the stringent requirements of aerospace applications. For more information on how our CNC machining services can support your aerospace manufacturing needs, please visit our website or contact our customer service team. We are here to provide detailed consultation and answer any questions you may have about our capabilities and services.


In aerospace CNC machining, the demands on materials are high due to the harsh conditions these parts face. Aluminum, titanium, and specific engineering plastics are the best choices for aerospace components

CNC machining reduces the risk of failure. It improves the safety of aerospace vehicles by adding precision. CNC machine tool machining is highly precise. It avoids material waste in manufacturing and cuts costs. CNC machining is automated. It allows for the production of consistent, high-quality parts. The parts maintain the high safety standards needed for aerospace. This greatly improves efficiency and safety in the aerospace industry.

Advancements in CNC machining help aerospace. They include 5-Axis Machining, Materials Technology, and High-Speed Machining. 5-Axis Machining lets you machine complex parts from any angle in one setup. This enables making complex aerospace components with complex shapes. High-speed machining can greatly cut lead times for aerospace components. It speeds up production without hurting accuracy.

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