Dissimilar Metal Plate Coupling With Molten Aluminum Extraction
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Solution Overview
Problem
The existing technique for coupling different metal plates using an engagement piece often results in insufficient contact due to melted aluminum being left between the flange of the engagement piece and the aluminum plate, leading to inadequate fastening strength.
Innovation Solution
A coupling device that uses a coupling member with a pilot portion and a ring-shaped wall to melt and discharge the facing portion of the first plate into a groove space, ensuring optimal contact and coupling between the pilot portion and the second plate through resistance welding, utilizing electrodes and a power source to control the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If resistance welding is performed with melted aluminum left between the flange of the engagement piece and the aluminum plate, then the welding process can be completed, but the contact between the flange and the aluminum plate becomes insufficient, causing the fastening strength to be inadequate
Solution Approach 1:
The invention extracts the harmful melted aluminum from the contact interface between the flange and the aluminum plate by providing a groove that collects and removes the melted material, preventing it from interfering with the welding contact and ensuring reliable fastening strength
Solution Approach 2:
The groove acts as an intermediary structure that manages the melted aluminum, providing a designated space for the molten material and preventing it from creating a barrier between the flange and the aluminum plate during the resistance welding process
2Adaptability or versatility
If the coupling member is designed to couple different metal plates, then versatility is improved, but the complexity of the coupling structure increases
Solution Approach 1:
The coupling member is designed with a universal structure that can accommodate different metal plate combinations (aluminum-steel, aluminum-aluminum, steel-steel) by using a standardized engagement piece with a groove that adapts to various material types and melting point combinations
Solution Approach 2:
The coupling member is segmented into distinct functional portions (flange, body, engagement piece with groove) that can be independently optimized while maintaining overall simplicity, allowing each portion to serve its specific function without adding unnecessary complexity to the entire structure
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 ensures a sufficient level of contact and coupling between plates with different melting points, achieving strong and reliable fastening through a single pressure-electrification step, preventing the coupling member from being removed from the first plate.
Implementation Method 1
The controller is configured to, while maintaining the contact state, control the power source to electrify the coupling member, the first plate, and the second plate while controlling the driver to apply pressure to the coupling member, the first plate, and the second plate so as to: melt a facing portion of the first plate facing the pilot portion of the coupling member
Implementation Method 2
melt and solidify the leading end of the pilot portion and the joint portion of the second plate to couple the leading end of the pilot portion and the joint portion of the second plate to each other
Data Source
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AI summary
A coupling device is configured to, using a coupling member, couple a first plate made of a first metal and a second plate made of a second metal to each other, and includes a first electrode, a second electrode, a power source, a driver, and a controller. The power source is connected to the first electrode and the second electrode. The driver is configured to move the first electrode and the second electrode relative to the coupling member, the first plate, and the second plate. The controller is configured to control the power source and the driver to electrify the coupling member, the first plate, and the second plate while controlling the first electrode and the second electrode to apply pressure to the coupling member, the first plate, and the second plate.