Integrated Metal Shell Forming for Notebook Casing Appearance
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Solution Overview
Problem
Manufacturing notebook shells with a shiny and aesthetically appealing appearance while maintaining durability and reducing costs, as traditional metal stamping processes are costly and complex, especially when hollowing out metal plates for design.
Innovation Solution
A manufacturing process involving stamping, hollowing, thickening, milling, and insert molding of sheet metal to form metal shells with integrated plastic parts, reducing the need for complex CNC processes and enhancing structural strength and appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional metal stamping process is used to manufacture notebook shells, then production cost and process complexity are reduced, but the appearance quality and shininess of the product deteriorate
Solution Approach 1:
The manufacturing process is segmented into distinct stages: initial stamping to form lug bosses, selective hollowing of top portions, flange thickening, and final side wall formation. This segmentation allows each operation to be optimized independently, achieving high appearance quality through controlled material flow and surface formation while managing overall process complexity through systematic breakdown of operations.
2Adaptability or versatility
If hollowing process is used to create design features in metal plates, then product design flexibility is improved, but manufacturing cost and process complexity increase significantly
Solution Approach 1:
The lug bosses are formed in advance during the initial stamping operation before the hollowing process. This preliminary formation of structural features simplifies subsequent hollowing operations, as the material is already positioned and pre-formed, reducing the complexity of achieving complex design features while maintaining design flexibility.
Solution Approach 2:
The hollowing operation is nested within the previously formed lug boss structure. By hollowing out the top portions of pre-formed lug bosses, the patent achieves complex three-dimensional design features through a sequence of operations where each step builds upon and utilizes the geometry created in previous steps, thereby managing manufacturing complexity while achieving design versatility.
3Strength
If flanges are thickened by squeezing process, then structural strength of the metal shell is improved, but manufacturing time and energy consumption increase
Solution Approach 1:
The flange thickening operation is merged with the side wall formation process. The squeezing operation that thickens the flanges is integrated into the same manufacturing sequence that forms the side walls, allowing both structural features to be created in a coordinated manner. This merging reduces total manufacturing time and energy consumption compared to performing separate thickening and side wall formation operations.
Data Source
AI summary
A method for manufacturing a metal shell for casing of electronic product comprises stamping, squeezing and milling a sheet metal at a first area and a second area to form hinge side walls. The sheet metal on the periphery is stamped, squeezed, and milled to form side walls. Insert molding is performed at inner surface of the sheet metal to form an internal molded plastic part and a fine machining of the sheet metal is carried out. The metal shell is integrally formed from a single solid sheet, the manufacturing process is simple and economical as CNC processes are reduced.