Aircraft Joining Apparatus Frame Structure for Friction Stir Welding
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Solution Overview
Problem
Existing joining devices for aircraft structural components require precise manual positioning and are not suitable for alternative joining procedures due to their complex design and reliance on rivets, which is time-consuming and prone to errors.
Innovation Solution
A formative frame structure that is detachably secured to the structural components serves as both positioning and guiding means for the joining device, enabling precise alignment and integration with friction stir welding, using a bobbin tool for welding, and incorporating vacuum suction for enhanced fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If riveting machines with guide structures are used for joining structural components, then reliable connection is achieved, but device complexity and production outlay increase significantly
Solution Approach 1:
The patent combines the positioning function and guiding function into a single integrated frame structure. The frame structure serves both to position the structural components accurately and to guide the joining device along the joining edge, eliminating the need for separate guide structures and reducing overall device complexity while maintaining connection reliability
Solution Approach 2:
The frame structure is designed to perform multiple functions simultaneously: it acts as a positioning means for the structural components, a guiding means for the joining device, and provides support for the joining process. This multi-functionality reduces the number of separate components needed and simplifies the overall joining device
2Ease of operation
If manual positioning is used for structural components, then ease of operation is maintained, but manufacturing precision and alignment accuracy deteriorate
Solution Approach 1:
The patent replaces manual positioning operations with an automated positioning system based on the frame structure. The frame structure provides predefined positioning points and geometric constraints that automatically ensure precise alignment of structural components, eliminating the need for manual measurement and adjustment while maintaining operational simplicity through automated processes
3Reliability
If riveting procedures are used for joining structural components, then proven reliability is achieved, but productivity and time consumption worsen
Solution Approach 1:
The patent changes the joining parameter from mechanical riveting to friction stir welding. This parameter change enables continuous joining along the entire edge rather than discrete rivet points, significantly increasing productivity while maintaining or improving joint reliability through the metallurgical bond created by friction stir welding
4Manufacturing precision
If precise positioning systems are implemented for structural components, then manufacturing precision is improved, but device complexity and cost increase
Solution Approach 1:
The frame structure is designed to be self-positioning through its geometric configuration and attachment to the structural components. The frame automatically establishes the correct spatial relationships and alignment without requiring external positioning systems or complex adjustment mechanisms, achieving high positioning precision through its inherent design
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 solution allows for precise and efficient alignment of structural components without manual corrections, enabling the use of alternative joining procedures like friction stir welding, ensuring high precision and stability during the welding process, even under high transverse forces.
Implementation Method 1
The frame structure (2) is detachably secured to the structural components (1) using vacuum suction means (9)
Implementation Method 2
serves as a guiding means for a joining device (6) which is movably secured thereon
Implementation Method 3
enabling the use of alternative joining procedures like friction stir welding
Data Source
AI summary
A joining apparatus for joining together structural components of an aircraft, includes positioning means for holding the structural components to be joined in a defined desired position, in which the structural components can be fixedly joined together by means of a joining device that can be moved relative to the structural components by way of guiding means, wherein the positioning means encompass a formative frame structure that is detachably secured to the structural components to be connected along the joining edges outside in the edge area, and serves as a guiding means for the joining device movably secured hereupon.