Stacked Metallic Layer Structural Member for Complex Internal Cavities
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional manufacturing techniques struggle to produce small structural members with complex internal geometries and high-quality surface finishes, especially when the dimensions are beyond the capabilities of traditional machining methods like drilling, which are limited by maximum depth-to-diameter ratios.
Innovation Solution
A method involving the stacking and welding of multiple metallic layers, where the middle layers have smaller dimensions than the top and bottom layers, creating a cavity of any desired length, and subsequent polishing to achieve a seamless surface finish.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional machining techniques like drilling are used, then manufacturing process is simple, but the cavity length is limited by maximum depth-to-diameter ratios
Solution Approach 1:
The structural member is divided into multiple metallic layers stacked together, with middle layers having smaller dimensions than top and bottom layers. This segmentation allows the cavity to extend through multiple layers, achieving greater cavity length while avoiding the depth-to-diameter ratio limitations of conventional drilling. Each layer can be manufactured separately and then joined, simplifying the overall manufacturing process.
Solution Approach 2:
The solution transitions from a single-layer drilling approach to a multi-layer stacked structure. By adding the dimension of layer stacking, the cavity can achieve greater length without increasing the diameter beyond machining capabilities. This dimensional change allows cavities to extend through multiple layers while maintaining manufacturable dimensions for each individual layer.
2Shape
If multiple metallic layers are stacked and welded together, then complex internal geometry and long cavities are achieved, but welding residues affect surface quality
Solution Approach 1:
Welding residues and imperfections are selectively removed from the outer peripheral portions of the stacked metallic layers through machining or grinding operations. This extraction of defective material allows the interior complex geometry to be maintained while restoring the exterior surface quality to meet cosmetic requirements.
Solution Approach 2:
Different quality requirements are applied to different regions of the structural member. The inner surfaces maintain the complex geometry formed by the stacked layers, while the outer peripheral portions are selectively processed to achieve smooth, cosmetic-quality surfaces. This local differentiation of quality standards resolves the conflict between complex internal geometry and exterior surface finish.
3Volume of moving object
If small structural members are manufactured, then product size is reduced, but conventional manufacturing techniques become economically unviable
Solution Approach 1:
The small structural member is segmented into multiple thin metallic layers that can be manufactured using efficient processes like laser cutting or rolling. These layers are then quickly assembled and welded together, a process that is more efficient than attempting to machine the entire small component as a single piece. This segmentation maintains productivity while enabling the manufacture of small, complex structural members.
Solution Approach 2:
The structural member is constructed as a composite of multiple metallic layers, combining the efficiency of sheet metal fabrication with the strength and complexity of a solid structural component. This composite approach allows small members to be manufactured economically by leveraging efficient sheet metal processes rather than traditional subtractive machining.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables the creation of structural members with complex internal geometries and seamless surface finishes, overcoming the limitations of traditional machining techniques by allowing for longer cavities and improved aesthetic and design requirements, particularly in small personal computerized products.
Implementation Method 1
The plurality of metallic layers may be joined together by any means known in the art, including, but not limited to, welding, mechanical fasteners, diffusion bonding, or the like
Data Source
AI summary
A structural member having an internal geometry capable of receive an object and substantially seamless outer surfaces, and that is obtainable by a method that includes providing several small plates, welding together the small plates, removing the weld residue, and polishing an outer surface of the structural member to achieve a certain desired visual effect. A middle plate, or several middle plates, may be positioned between a first plate and a second plate. The middle portion occupied by the middle plates includes an opening, cavity, and/or channel. The opening, cavity, and/or channel may receive a cable from an electronic device, or house a component. The plates and the opening, cavity, and/or channels between the plates, generally have a small form factor, and accordingly, require an assembly process to create the opening, cavity, and/or channels rather than using traditional drilling and/or milling techniques.