Why is CNC so compelling to all handset makers?
Release time:2024-04-01
Why is CNC so compelling to all handset makers?
Since Jobs took the lead in using CNC integrated metal fuselage in Apple 4, the word user experience has appeared in the industry market with a high frequency, and more and more mobile phone, notebook, and wearable device manufacturers have begun to make efforts in the shell material. Let CNC, which was previously specialized in the field of industrial manufacturing, be widely used.
CNC machining preprocessing: modeling and programming
Before CNC machining can begin, it is necessary to first model and program. The difficulty of 3D modeling is determined by the product structure, and the product modeling with complex structure is more difficult, and the process of programming is more and more complex. Programming includes the process setting, tool selection, speed setting, the distance of each feed of the tool and so on. In addition, the clamping methods of different products are different, and the fixture should be designed before processing, and some complex products need to do special fixtures.
Programming includes the processing process of the entire product, although the follow-up is CNC automation, but the early programming must be operated by experienced personnel to avoid repeated trials and errors to increase costs.
Main processing technology
Using a high-speed drilling and tapping center, the casting-china.com' target='_blank'>aluminum sheet is precisely milled into a regular three-dimensional volume of a certain size, ready for the next process.
Rough milling: After positioning, rough milling out the inner cavity structure, the positioning column combined with the fixture, and milling out most of the external redundant materials.
Antenna slot milling: The signal problem with the all-metal housing is tricky, and the antenna slot needs to be milling out to allow for the transmission path of the signal and maintain the necessary connection points to ensure the strength and integrity of the fuselage.
CNC finishing: Fine milling of inner cavity, outer structure, outer surface, side and so on.
Polishing: Polishing with a high-speed precision CNC machine to eliminate knife lines and prepare for subsequent sandblasting.
Sandblasting: The surface of the metal is treated to a matte effect.
Anodizing:
Primary anodizing: Coloring the phone, anodizing turns the aluminum gold. At the same time improve the stability of the surface material
Secondary anode: The fuselage surface forms a strong and dense oxide film, which further enhances the wear resistance.
Plastic shell molding using injection molding process, only need to open the mold can be mass produced, high yield. The CNC machining yield of the full metal body is determined by the structural complexity and precision requirements of the shell, it is difficult to achieve the high yield of the plastic shell, in order to balance the high cost, most manufacturing companies will choose to purchase a large number of CNC equipment in the face of a price war to reduce the comprehensive cost and meet the productivity requirements.
