CNC Aluminum Machining Turning and Milling from Yixing

What is CNC Aluminum Machining？

Aluminum alloy CNC machining refers to the process of using Computer Numerical Control (CNC) technology to process and manufacture aluminum alloy materials. CNC machining is an automated machining method that uses pre programmed instructions to control the relative movement of cutting tools and workpieces on the machine tool, achieving machining operations such as cutting, drilling, turning, and milling of aluminum alloy materials.

In aluminum alloy CNC machining, the first step is to create a 3D model of the part using Computer Aided Design (CAD) software, and then generate a machining program using CAD software to determine the required cutting path, tool selection, cutting parameters, etc. Next, load the machining program into the control system of the CNC machine tool and fix the aluminum alloy workpiece on the machine tool.

Benefits & Challenges in CNC Aluminum Machining

Aluminum alloy is a widely used material, commonly used in industries such as aviation, automotive, and construction. During the manufacturing process, aluminum alloys must be machined to achieve the desired shape and size. The cutting process of aluminum alloy has the following advantages and disadvantages:

Advantages:
1. Aluminum alloy has good machinability and is easy to process;
2. The proportion of aluminum alloy is relatively small, making it easy to cut during the machining process and reducing the amount of mechanical cutting;
3. Aluminum alloy has good thermal conductivity, so it is not easily damaged by overheating during processing.

Challenges :
1. Aluminum alloy has a high degree of softness and is prone to rebound during cutting processes;
2. Aluminum alloys have relatively low hardness and cutting forces, therefore requiring the use of higher tool speeds and feed rates;
3. Aluminum alloy is prone to sticking to the surface of the tool, resulting in rapid tool wear.

Aluminum Grades We Work With

Due to its high machinability and ductility of aluminum alloy, customers will face many kinds of choices in the selection of aluminum grade. Every grade has its own advantages and disadvantages, so customers may get confused facing so many choices. You can depend on our engineers long experience in aluminum machining and get the perfect material to your expectation. Below is a brief introduction of common aluminum grade we have experience with.

Aluminum 2024

2024 aluminum alloy has high strength and good wear resistance, making it suitable for making various high-strength parts. This alloy is also a suitable aluminum alloy material for processing, which can be used to produce various aircraft components, wheels, nuts, cans, extruded pipe fittings, etc.

Aluminum 7075

7075 aluminum alloy is also a common processing material. This alloy has high strength and low density, making it particularly suitable for making high-strength parts, such as aircraft structural components, high-strength screws, wheel axles, etc. Due to its high strength and good processing performance after heat treatment, it is one of the preferred materials for high-end CNC machining.

Aluminum 6082
6082 is a heat treatable and strengthening alloy with good formability, weldability, and machinability. It also has moderate strength and can maintain good operability after annealing. Commonly used in industries such as aviation fixtures, trucks, construction, ships, pipelines, etc.

Aluminum 6061
6061 aluminum alloy is one of the commonly used processing aluminum alloys, which has good mechanical properties and machinability. This alloy has excellent corrosion resistance, high strength under heat treatment, and good processing performance. It is an ideal material for drilling machines, lathes, milling machines, polishing and other processing materials. Meanwhile, this alloy can also be used in fields such as electronic parts, aircraft components, various medical devices, packaging devices, etc

Why Choose Us for CNC Aluminum Machining Service

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*Save Your Cost
Our experienced engineers optimize the manufacturing process to make the cost as low as possible but also maintain the high precision. We are aiming for win win relationship with customers.
*One-stop Shop
We provide full range machining services like turning, milling, turning-milling compound, grinding, EDM etc. You can get any design machined in our workshop.
*Short Lead Time & Low MOQ
Our lead time ranges from 5 days to 30 days depending on different projects QTY and design. We are friendly to start up companies and new development project. QTY can be as low as 50-100pcs.

FAQs

How to Improve the Cutting Performance of Aluminum Alloys

1. Choose the appropriate tool
Choosing appropriate cutting tools is crucial for different aluminum alloy materials. When processing aluminum alloys, common tool materials include high-speed steel, hard alloy, and multi-layer coating materials. In addition, substances such as tool lubricants can be used to reduce tool surface wear and cutting force, and improve cutting efficiency.
2. Control processing parameters
Controlling appropriate cutting parameters is also crucial for improving the cutting performance of aluminum alloys. Appropriate feed rate and tool speed can reduce the wear of the cutting edge and maintain good machining surface quality.
3. Reasonable design
Try to avoid burrs, thin-walls, and faults on the surface of aluminum alloy parts during design, in order to avoid vibration and poor cutting during machining.

Aluminum alloys have good machinability, but attention should be paid to selecting appropriate cutting parameters and tool materials during machining. For complex workpieces, it is recommended to use CNC cutting machines and pre-process aluminum alloy profile to achieve better cutting results.
Twelve Tips to Avoid Deformation in CNC Aluminum Machining

Deformation is a common problem during aluminum machining. The following are some methods for handling deformation during aluminum processing:

1.Reasonably select cutting parameters. Use small cutting depth and large feed rate to reduce cutting force and thus reduce deformation.
2.Use appropriate clamping methods. Avoid displacement and vibration during the machining process, and increase the machining stiffness.
3.Use machine tool accessories. Improve processing stability.
4.Use cutting fluid. Conduct sufficient cooling, control cutting temperature rise, and reduce thermal deformation.
5.Perform tempering or aging treatment. Eliminate residual stress, reduce internal stress and deformation after processing.
6.Pre processing heat treatment. Improve material strength and reduce deformation risk for thin or large-sized aluminum materials.
7.Design a reasonable processing sequence and tooling plan. Reasonably release internal stress and avoid deformation accumulation.
8.Use templates or professional equipment. For deformed aluminum parts, wooden or aluminum templates can be used, and the deformed part can be flattened with a hammer.
9.Re-machining. For deformed aluminum parts that cannot be restored, it is necessary to reassess their applicability and strength level, and adopt the correct processing technology and equipment.
10.Pre-processing. By reducing the margin of the blank, the processing deformation of subsequent processes can be reduced and some internal stress can be released.
11.Improve the cutting ability of the cutting tool. Choose appropriate tool geometry parameters and tool structure to reduce cutting force and cutting heat, thereby reducing machining deformation.
12.Improve the clamping method of workpieces. For thin-walled aluminum parts with poor rigidity, appropriate clamping methods should be adopted to reduce deformation.
Surface Roughness of Aluminum Alloy Machining

The surface roughness of aluminum alloy machining is influenced by various factors, including machining methods, cutting conditions, tool materials, and the physical properties of the aluminum alloy itself. Different processing methods and parameters can lead to varying surface roughness. For example, the surface roughness of milling is generally between 1.6 ~ 6 μm, while that of turning is between 1.6 ~ 3.2 μm. The surface roughness of stamping and stretching processing also varies, ranging from 1.6 ~ 3.2 μm and 0.8 ~ 2.5 μm, respectively.

To improve the surface roughness of aluminum alloy machining, the following methods can be adopted:

1.Choose appropriate cutting tools and fluids to reduce cutting temperature and surface roughness.
2.Reduce cutting force and increase cutting speed to reduce surface roughness.
3.Optimize the machining process, such as controlling the cutting angle and size of the tool, to reduce defects and surface roughness.

In addition, the detection methods for surface roughness of aluminum alloy machining include tactile testing, optical instrument testing, and optical imaging technology testing, which can help evaluate and monitor surface roughness. Overall, the surface roughness of aluminum alloy machining is a key quality indicator, and its control and improvement are crucial for ensuring product quality and performance.

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Shanghai Yixing Machining

Shanghai Yixing is a machining factory in China with more than 15 years experience. We have manufactured and shipped millions of machining, turning and milling metal and plastic parts to USA, Canada, Germany, UK, Australia etc.

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