Adjustable Fuselage Panel Jig for Multi-Curvature Positioning
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Solution Overview
Problem
Conventional aircraft fuselage assembling jigs are designed for specific fuselage panels and cannot be used for panels with different curvatures, requiring multiple jigs to be prepared for each panel type, which limits their versatility and precision in positioning.
Innovation Solution
A horizontal-type aircraft fuselage assembling jig with adjustable electric cylinders and air lifting devices that allow precise positioning of aircraft fuselage panels with varying curvatures, enabling the jig to be used for multiple panels by adjusting the strokes of the electric cylinders and rendering the panels slidable with air pressure for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional aircraft fuselage assembling jigs are designed for specific fuselage panels with fixed curvature, then positioning precision is improved, but versatility deteriorates
Solution Approach 1:
The patent applies the dynamics principle by replacing fixed contour bars with adjustable receiving members that can be positioned radially along header plates. The receiving members can be moved to different positions using electric cylinders, allowing the jig to adapt to various panel curvatures while maintaining positioning precision. This dynamic adjustment capability resolves the contradiction between fixed precision design and versatility.
Solution Approach 2:
The patent implements parameter changes by allowing the receiving members to be positioned at different radial distances from the jig body center. By changing the position parameters of the receiving members along the header plates, the jig can accommodate panels with different curvatures. This parameter adjustment mechanism enables the same jig to maintain high positioning precision across multiple panel types.
2Adaptability or versatility
If multiple aircraft fuselage assembling jigs are prepared for different panel types, then versatility is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies universality by designing a single jig that can serve multiple functions for different panel types. The receiving members can be adjusted to match various panel curvatures, making one jig universal for assembling different fuselage panels. This eliminates the need for multiple specialized jigs, reducing device complexity and cost while maintaining versatility.
Solution Approach 2:
The dynamic adjustability of receiving members along header plates enables one jig to replace multiple fixed jigs. By making the jig structure dynamically adjustable rather than fixed, the system achieves multi-functionality without increasing overall device complexity.
3Manufacturing precision
If receiving members are fixed at specific positions, then positioning precision is improved, but adaptability to different curvatures deteriorates
Solution Approach 1:
The receiving members are made dynamically adjustable along the header plates rather than being fixed. Electric cylinders enable precise radial positioning of receiving members, allowing them to be set at optimal positions for different panel curvatures while maintaining high positioning precision through controlled adjustment.
Solution Approach 2:
The position parameters of receiving members are made changeable along the radial direction of header plates. By adjusting these parameters, the jig can adapt to different panel curvatures while maintaining positioning precision through controlled parameter changes enabled by electric cylinder actuators.
4Manufacturing precision
If air lifting devices are used to render panels slidable, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The patent uses air lifting devices (pneumatic system) to render the panel slidable on the jig. By supplying air pressure, the panel can be easily positioned with high precision before being fixed. The pneumatic system provides a simple yet effective mechanism for achieving precise positioning without complex mechanical adjustment systems.
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
The solution allows for high-precision positioning and handling of aircraft fuselage panels with different curvatures, enabling the same jig to be used for multiple panels, reducing the need for multiple jigs and improving operational efficiency.
Implementation Method 1
air lifting devices that are provided on the respective receiving members and that, when supplied with air pressure, lift the skin from receiving surfaces of the respective receiving members and support the aircraft fuselage panel such that the aircraft fuselage panel is slidable
Data Source
AI summary
An aircraft fuselage assembling jig is a horizontal-type jig on which an aircraft fuselage panel is placed in a laid-down state, and includes: a base with a plurality of frame indexes for positioning both ends of a plurality of aircraft fuselage frames; a plurality of header plates, each of which protrudes from the base to extend along the panel, the header plates being arranged in parallel in an axial direction of the panel; a plurality of electric cylinders radially provided on each plate, the electric cylinders moving respective receiving members in a radial direction of the panel, the receiving members contacting a skin included in the panel; and air lifting devices provided on the respective receiving members and that, when supplied with air pressure, lift the skin from receiving surfaces of the respective receiving members and support the aircraft fuselage panel such that the aircraft fuselage panel is slidable.