Process for fully milling notebook computer shell

Abstract

The invention relates to a process for fully milling a notebook computer shell, which comprises the following steps: selecting an aluminum alloy plate, and forging and pressing the aluminum alloy plate into a box shape; then, 3D material adding is carried out on needed places according to the product structure; thirdly, the appearance and the internal structure of the product are subjected to CNC machining, then a machined part is formed through grinding, and then sand blasting treatment is conducted on the machined part; and finally carrying out anodic oxidation treatment. According to the technical scheme, the novel technology comprises the steps that an aluminum alloy plate is adopted and forged into a box shape, then 3D additive treatment is conducted on the part of the aluminum alloy plate, CNC appearance treatment is conducted to form a corresponding structure, then appearance grinding is conducted, then surface sand blasting is conducted, and finally anodic oxidation treatment or paint spraying treatment is conducted. The new process can greatly improve the material utilization rate (finished product weight / profile weight) and reduce material waste; the CNC machining time can be shortened; and the production cost is low. The material utilization rate of a general notebook computer fully-milled C part is about 8%, and the new process can be improved to about 15%.

Description

Technical Field

[0001] The invention relates to the technical field of notebook computer casing manufacturing industry, and in particular to a full milling processing technology for notebook computer casing. Background Art

[0002] The common manufacturing process of fully milled laptop computer cases includes: selecting aluminum alloy extruded profiles, using CNC machine tools to process the shape and form the structure; then grinding the product, performing surface sandblasting, and finally anodizing. The equipment involved in this process includes CNC machine tools, ABB grinders, sandblasting equipment, and anodizing production lines. However, in traditional manufacturing processes, due to the high vertical dimensions of the ridges, hooks, studs, walls and other structures in the design of laptop computer shells, the thickness of aluminum alloy extruded profiles is generally 6mm to 15mm. During the actual CNC processing of the fully milled laptop computer case, a lot of material needs to be removed. This situation not only significantly increases the CNC production time cost and reduces production efficiency; it also causes a huge waste of aluminum alloy raw materials and creates an unnecessary burden on the environment.

[0003] In view of these problems, our team has conceived a new technical solution through in-depth research and repeated experiments, and hereby applied for this invention. Summary of the invention

[0004] In order to solve the above-mentioned problems in the prior art, the present invention provides a full-milling notebook computer shell process to improve the above-mentioned deficiencies.

[0005] The present invention relates to a fully milled notebook computer casing manufacturing technology, and a fully milled notebook computer casing processing technology, comprising the following steps:

[0006] (1) Select a thin aluminum alloy sheet and forge it into a box shape;

[0007] (2) Then, 3D additive machining is performed on the required internal locations;

[0008] (3) Next, CNC machining is performed on the inside and outside of the product to form an appearance and structure that meets the design requirements, and then the appearance of the processed part is polished;

[0009] (4) performing sandblasting on the workpiece in step (3);

[0010] (5) Finally anodizing or painting.

[0011] Furthermore, the thin aluminum alloy plate is made of 6 series aluminum alloy.

[0012] Furthermore, the thickness of the thin aluminum plate is less than 7 mm.

[0013] Furthermore, the 3D additive method used for the position where the inner wall of the side wall of the box-shaped forged semi-finished product is connected is the metal powder high-speed cold spray additive technology.

[0014] Furthermore, the 3D additive method for the box-shaped forged semi-finished product at a position away from the inner wall is processed by friction welding additive technology.

[0015] This technical solution describes in detail an innovative process flow: first, a thin aluminum alloy sheet is selected, and a boxed forged semi-finished product is formed using forging technology. Then, 3D additive manufacturing technology is implemented in specific areas, and then CNC technology is used to fine-process the shape and internal structure, followed by exterior polishing, followed by surface sandblasting, and finally anodizing. This innovative process significantly improves the material utilization rate (i.e., the ratio of the weight of the finished product to the weight of the aluminum alloy sheet), effectively reducing material waste. Traditionally, the material utilization rate of the full milling C parts of a laptop computer is about 8%, while after adopting this innovative process, the utilization rate can be increased to about 15%. At the same time, the reduction in processing volume also means a reduction in the time cost of CNC processing and an improvement in manufacturing efficiency; the energy consumption during CNC processing is reduced, and harmful emissions such as hazardous waste such as cutting oil are reduced, which is more in line with the green and environmentally friendly production concept. Furthermore, by improving the material utilization rate, the energy consumption in the mining of raw materials is also reduced, while the impact on the environment is reduced. In general, this innovative technology for the manufacture of laptop computer cases has the advantages and characteristics of low cost, high efficiency, low energy consumption, and less pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the plate structure in the process of the present invention.

[0017] Figure 2 It is a schematic diagram of the box body structure formed by the plate in the process of the present invention.

[0018] Figure 3 It is a schematic diagram of the structure of the box body after 3D additive manufacturing in the process of the present invention.

[0019] Figure 4 It is a schematic diagram of the structure of the shell after CNC shape processing in the process of the present invention.

[0020] Illustration: 1 side wall part, 2 middle area. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] Example: In the new process of milling the laptop case, we selected thin aluminum sheet as the main material. This material selection not only helps to reduce the weight of the raw material of the product, but also provides convenience for subsequent processing steps. Figure 1 As shown, in particular, we took an aluminum sheet less than 7 mm and forged it into a "box-like" structure, such as Figure 2 As shown. In specific areas such as the laptop structural surface, we apply advanced 3D additive manufacturing technology. This technology can deposit materials layer by layer in specific areas according to the design drawings to form aluminum alloy geometric shapes that are integrated with the substrate and have high strength. Finally, the product structural features are refined through post-processing such as CNC. In this way, we can achieve higher strength, higher precision and more complex product structures in specific areas.

[0023] In the 3D additive manufacturing process, Figure 3 As shown, for the part 2 of the box body side wall additive, we used metal powder high-speed cold spray additive technology. Metal powder high-speed cold spray additive technology uses nitrogen and other gases with a certain temperature and pressure to drive metal powder and accelerate it to supersonic speed, so that the powder particles hit the surface of the substrate at high speed, undergo violent plastic deformation in the solid state and combine together to form a stable and high-strength metal additive body. For the other middle area 1 of the box body away from the inner wall, we used friction welding additive technology for processing. Friction welding additive is a solid-state connection technology that uses the heat generated by friction to make the material reach a plastic state, thereby achieving welding. Compared with traditional melting welding technology, stir friction welding has higher strength and better sealing performance, while also significantly reducing the heat-affected zone, deformation and residual stress.

[0024] After the metal 3D additive processing is completed, we transfer the parts to the CNC machine for shape and structure processing. CNC machine tools are computer controlled and can accurately process complex appearance and internal structural features, such as Figure 4 In this way, we can ensure that the size and shape of each component meets the design requirements, thus ensuring the quality of the final product.

[0025] After CNC machining, we carefully polish the exterior. Polishing not only removes burrs, scratches, unevenness and other defects, but also creates a smooth base for subsequent surface treatment steps. Through polishing, we can ensure that the laptop case looks more beautiful and feels more comfortable.

[0026] Next, we performed sandblasting on the surface. Sandblasting is a surface treatment technology that uses high-speed spraying of sand or other abrasives to thoroughly clean the surface of the material and form a uniform texture. Sandblasting can not only improve the appearance of the surface, but also increase the adhesion of the coating, thus laying a good foundation for the subsequent anodizing treatment.

[0027] Finally, we performed anodizing. Anodizing is an electrochemical process that forms an aluminum oxide film on the surface of aluminum to improve the corrosion and wear resistance of the material. The color and thickness of the anodized film can be controlled by adjusting the process parameters to meet different design requirements.

[0028] For the final processing, spray painting can also be used as needed.

[0029] In this solution, the thin aluminum plate selected is 6 series aluminum alloy.

[0030] The implementation of the new process has significantly improved the material utilization rate, that is, the ratio of the finished product weight to the profile weight. Under the traditional process, the material utilization rate of the fully milled C parts of laptop computers is generally low, only about 8%, while the new process can increase it to about 15%. This means that the new process is more efficient in material use and greatly reduces material waste.

[0031] In addition, the simplification of the new process flow also makes the production process more flexible and efficient. Through the combination of forging, additive manufacturing and CNC technology, customer designs can be realized faster and more accurately, and better adapt to market changes and customer needs.

[0032] In addition, the new process reduces the amount of CNC milling and successfully shortens the CNC processing cycle, allowing us to complete the processing of parts faster, thereby improving production efficiency, which also means lower production costs for laptop cases.

[0033] On the other hand, the implementation of the new process not only significantly improves production efficiency, but also makes it more environmentally friendly. Due to the improvement of material utilization, we reduce the consumption of raw materials, thereby reducing dependence on natural resources. At the same time, the reduction of CNC and other processing cycles can also reduce energy consumption and carbon footprint, while reducing the generation and emission of hazardous waste such as cutting oil during the production process, making the entire production process more green and environmentally friendly.

[0034] In general, the new process improves the material utilization rate of the product and reduces the processing time, which not only improves the quality of the product and the economic benefits of production, but also complies with the environmental protection concept of green and sustainable development. The implementation of this new process provides a more efficient, economical and environmentally friendly solution for the manufacture of laptop shells.

Claims

1. Full milling laptop shell process, characterized by: The following steps are involved: (1) Select a thin aluminum alloy sheet and forge it into a box shape; (2) Then, 3D additive manufacturing is performed where necessary; (3) Next, the product is CNC machined inside and outside to create its shape and internal structure, and then polished to form a processed part. (4) performing sandblasting on the workpiece in step (3); (5) Finally anodizing or painting.

2. The process for fully milling a notebook computer shell according to claim 1 is characterized in that: The thin aluminum plate is made of 6 series aluminum alloy.

3. The process for fully milling a notebook computer shell according to claim 1 is characterized in that: The thickness of the thin aluminum plate is less than 7 mm.

4. The process for fully milling a notebook computer shell according to claim 1 is characterized in that: The 3D additive method used for the inner wall of the box-shaped aluminum plate is metal powder high-speed cold spray additive technology.

5. The process for fully milling a notebook computer shell according to claim 1 is characterized in that: The 3D additive method for the position of the box-shaped aluminum plate far away from the inner wall is processed by friction welding additive technology.

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