S-Shaped Power System Enclosure Panel for Draw Die Forming
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Solution Overview
Problem
Conventional enclosures for engine-driven power systems are difficult to form using draw die processes, often resulting in deformation of features and requiring additional steps, which complicates and costs more than forming panels with an S-shaped cross-section.
Innovation Solution
The enclosure features a rear panel formed from a single sheet of metal with an S-shaped cross-section, comprising a first formed portion facing one direction and a second formed portion facing the opposite direction, which simplifies the draw die process, reduces deformation, and enhances strength and aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional enclosure designs are used with traditional forming processes, then components can be housed based on their relative locations, but the enclosures are difficult to form using draw die processes, resulting in deformation of features and requiring additional manufacturing steps
Solution Approach 1:
The panel is formed with a convex cross-sectional shape that is substantially S-shaped, featuring a first radius of curvature in a first region and a second radius of curvature in a second region. This curved geometry allows the panel to be formed using a draw die process without deformation of features, as the curvature distributes forming stresses evenly throughout the material.
Solution Approach 2:
The invention changes the geometric parameters of the panel by forming it with specific convex and concave regions that have controlled radii of curvature. This parameter optimization enables the panel to be formed in a single draw die operation without the deformation issues that plague conventional flat or single-curve designs.
2Ease of manufacture
If conventional enclosure designs are used, then components can be housed based on their relative locations, but additional manufacturing steps are required which complicates and increases cost
Solution Approach 1:
The invention merges multiple forming operations into a single draw die process. The S-shaped convex cross-section is formed in one continuous operation, eliminating the need for separate steps to create different panel sections. This consolidation simplifies the manufacturing process and reduces the number of steps required.
Solution Approach 2:
The panel is pre-formed with the complete S-shaped convex cross-section and all necessary features before final assembly. This preliminary forming action ensures that all geometric complexities are resolved in advance, allowing the enclosure to be assembled without additional forming steps or complications.
3Strength
If conventional panel designs are used, then manufacturing can proceed with traditional methods, but the panels are weaker and more prone to deformation
Solution Approach 1:
The convex S-shaped cross-section with controlled radii of curvature distributes structural stresses evenly throughout the panel, significantly increasing its strength and resistance to deformation. The dual-curve geometry creates a more rigid structure that maintains its shape under load compared to conventional flat or single-curve panels.
Solution Approach 2:
The invention adds dimensional complexity by forming the panel with a three-dimensional convex cross-section rather than a flat or simply curved shape. This dimensional enhancement creates a more robust structure that resists deformation while maintaining manufacturing feasibility through the draw die process.
Data Source
AI summary
Disclosed power systems include an enclosure comprising a panel formed from a single sheet of metal. The panel comprises a first formed portion facing a first direction, a second formed portion facing a second direction opposite the first direction, and a center surface. The power system further includes an engine within the enclosure and a generator within the enclosure and configured to convert mechanical power from the engine to electrical power.