Leading CNC Machining & Fabrication.

Nordon Pty Ltd

CNC Machining Specialists


29 Furness Ave. Edwardstown, 5039, South Australia.

Opening hours

Mon – Fri: 9AM – 5PM

Aluminium CNC Machining

Aluminium CNC machining has revolutionized the manufacturing industry, offering enhanced efficiency and precision like never before. With the ability to shape and mold aluminium into complex and intricate designs, CNC machining has become the go-to method for producing high-quality aluminium components.

Using advanced computer-controlled machines, CNC machining allows for precise cuts, drills, and shaping, resulting in components that meet the strictest tolerances. This precision not only improves the quality of the final product but also reduces waste and eliminates the need for manual adjustments or rework.

By harnessing the power of aluminium, CNC machining provides numerous benefits. Aluminium is lightweight, yet exceptionally strong, making it an ideal choice for industries such as aerospace and automotive. Additionally, aluminium’s excellent thermal and electrical conductivity properties make it a popular choice for heat sinks and electronic enclosures.

With its ability to bring designs to life with incredible precision, aluminium CNC machining is a game-changer for manufacturers in various industries. By leveraging this technology, businesses can streamline their production processes, increase productivity, and deliver superior-quality products to their customers.

XS1100 chain drive

Aluminium motorcycle gearbox covers created using CNC machining 

Applications of aluminium CNC machining

Aluminium CNC machining offers several advantages over traditional machining methods. Firstly, it provides exceptional precision and accuracy. The computer-controlled machines used in CNC machining ensure that each cut, drill, and shape is executed with utmost precision, resulting in components that meet the strictest tolerances. This level of precision is crucial in industries where even the slightest deviation can lead to catastrophic consequences.

Secondly, aluminium CNC machining allows for complex and intricate designs. The flexibility of CNC machines enables manufacturers to create components with intricate geometries and shapes that would be nearly impossible to achieve with traditional machining methods. This opens up new possibilities for industries such as aerospace, where lightweight and aerodynamic designs are paramount.

Another advantage of aluminium CNC machining is its efficiency. CNC machines can operate continuously, 24/7, with minimal human intervention. This significantly reduces production time and increases overall efficiency. Additionally, CNC machines can be programmed to produce multiple components simultaneously, further enhancing productivity.

Understanding the CNC machining process

Aluminium CNC machining finds applications in a wide range of industries. One prominent industry is aerospace. The lightweight and high strength-to-weight ratio of aluminium make it an ideal material for aircraft components.

CNC machining allows manufacturers to produce complex and lightweight parts, reducing the overall weight of the aircraft and improving fuel efficiency.

The automotive industry also benefits from aluminium CNC machining. Aluminium components can be found in engines, transmissions, chassis, and body panels. CNC machining enables manufacturers to produce precise and lightweight components, enhancing the overall performance and fuel efficiency of vehicles.

Electronics and telecommunications industries rely on aluminium CNC machining for the production of heat sinks and electronic enclosures. The excellent thermal conductivity properties of aluminium make it an ideal material for dissipating heat generated by electronic components. CNC machining ensures that heat sinks and enclosures are manufactured with precise dimensions and optimal cooling capabilities.

Factors to consider when choosing aluminium for CNC machining

CNC machining involves several steps that transform a block of aluminium into a finished component. The process begins with creating a digital model or design of the component using computer-aided design (CAD) software. The design is then converted into machine-readable code using computer-aided manufacturing (CAM) software.

Once the code is generated, it is loaded into the CNC machine. The machine uses this code to control the movement of the cutting tools, such as drills and mills, to shape the aluminium block. The cutting tools remove material from the block, following the instructions provided by the code.

Throughout the machining process, the CNC machine continuously monitors and adjusts the position and speed of the cutting tools to ensure precision and accuracy. Once the machining is complete, the finished component is carefully inspected for quality and any necessary finishing touches are applied.

Preparing for aluminium CNC machining – material selection and design considerations

Before embarking on an aluminium CNC machining project, it is essential to consider several factors that can impact the success and quality of the final product. One important consideration is the grade of aluminium. Different grades of aluminium have varying properties, such as strength, corrosion resistance, and machinability. Choosing the right grade is crucial to ensure optimal performance and machinability.

Another factor to consider is the size and shape of the component. Complex and intricate designs may require specialized CNC machines or tools to achieve the desired results. It is important to assess the capabilities of the CNC machining facility and ensure that they can handle the specific requirements of the project.

The tolerances and surface finish requirements of the component should also be taken into account. CNC machines can achieve tight tolerances and smooth surface finishes, but these factors may influence the overall cost and production time. Balancing the desired precision with the project’s budget and timeline is crucial.

Best practices for aluminium CNC machining

To ensure a successful aluminium CNC machining project, careful material selection and design considerations are essential. The material selection process involves choosing the appropriate aluminium grade based on the project requirements.

Factors such as strength, corrosion resistance, and thermal conductivity should be evaluated to ensure optimal performance.

Design considerations play a crucial role in the manufacturability of the component. Complex designs may require multiple setups or specialized fixtures to achieve the desired results. Designers should work closely with the CNC machining team to optimize the design for manufacturing and ensure that it can be efficiently produced without compromising quality.

Additionally, designers should consider factors such as tool access, part orientation, and support structures during the design phase. These considerations can significantly impact the machining process and overall efficiency.

Common challenges in aluminium CNC machining and how to overcome them

To achieve the best results in aluminium CNC machining, there are several best practices that should be followed. Firstly, proper tool selection is critical. Different aluminium grades require specific cutting tools to ensure optimal performance and surface finish. Using the right tools can also extend tool life and reduce the risk of tool breakage.

Maintaining proper cutting speeds and feeds is another important practice. Aluminium has a relatively low melting point, and excessive heat can lead to poor surface finish and dimensional inaccuracies. Controlling the cutting parameters, such as spindle speed and feed rate, is crucial to prevent overheating and ensure optimal machining results.

Efficient chip evacuation is also essential in aluminium CNC machining. Aluminium produces chips that can be challenging to evacuate, leading to poor surface finishes and tool wear. Using appropriate chip evacuation techniques, such as high-pressure coolant or chip breakers, can improve chip removal and prevent chip recutting.

Case studies showcasing successful aluminium CNC machining projects

Despite its numerous advantages, aluminium CNC machining also presents some challenges that need to be addressed. One common challenge is the tendency of aluminium to generate built-up edge (BUE) during machining. BUE can lead to poor surface finish and tool wear. To overcome this, using specialized cutting tools with proper coatings and employing effective chip evacuation techniques can help mitigate BUE formation.

Aluminium is also prone to work hardening, especially during repetitive machining operations. Work hardening can cause the material to become more challenging to machine, resulting in increased tool wear and reduced productivity. To counteract work hardening, using sharp cutting tools and minimizing tool dwell time can help maintain machining efficiency.

Another challenge in aluminium CNC machining is the risk of thermal distortion. As aluminium is a highly conductive material, excessive heat generated during machining can cause the component to deform or warp. To minimize thermal distortion, controlling the cutting parameters, using appropriate cooling techniques, and employing workholding strategies that provide optimal support are crucial.