Adjustable Fuselage Assembly Jig for Multi-Curvature Panels
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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, which is inefficient.
Innovation Solution
An aircraft fuselage assembling jig with adjustable electric cylinders and movable frame indexes, stringer indexes, and edge indexes that can be switched between different positions to accommodate various curvature and arrangement patterns, allowing precise positioning for multiple fuselage panels.
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 assembly precision is improved, but the number of jigs required increases when multiple panel types are assembled
Solution Approach 1:
The patent applies the dynamics principle by making the contour bars adjustable rather than fixed. Each contour bar can be moved radially to match different skin curvatures through a positioning mechanism with multiple holes, allowing the same jig to adapt to multiple panel types while maintaining assembly precision
Solution Approach 2:
The patent implements parameter changes by modifying the position parameters of the contour bars. The bars can be adjusted to different radial positions corresponding to different curvature radii, enabling the jig to accommodate various panel curvatures without sacrificing positioning accuracy
2Adaptability or versatility
If multiple aircraft fuselage assembling jigs are prepared for different panel curvatures, then adaptability is improved, but cost and device complexity increase
Solution Approach 1:
The patent applies universality by designing a single jig that can serve multiple functions for different panel curvatures. The contour bars are made adjustable to match various curvature radii, allowing one jig to replace multiple dedicated jigs and reduce overall system complexity
Solution Approach 2:
The dynamic adjustability of contour bars enables one jig to adapt to multiple panel types, eliminating the need for multiple static jigs and thereby reducing device complexity and cost
3Manufacturing precision
If contour bars are fixed for a single curvature, then manufacturing precision is improved, but ease of operation deteriorates when switching between different panel types
Solution Approach 1:
The contour bars are designed with dynamic positioning capability, allowing operators to adjust them to match different skin curvatures. The positioning mechanism with multiple holes enables precise adjustment while maintaining manufacturing precision, making the jig easier to operate across different panel types
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
Enables the use of a single jig for multiple aircraft fuselage panels with different curvatures and arrangement patterns, reducing the need for multiple jigs and improving assembly precision and cost-effectiveness.
Implementation Method 1
a plurality of electric cylinders radially provided on each of the plurality of header plates, the electric cylinders moving respective receiving members in a radial direction of the aircraft fuselage panel
Data Source
AI summary
An aircraft fuselage assembling jig includes: a base provided 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 so as to extend along an aircraft fuselage panel, the header plates being arranged parallel to each other in an axial direction of the aircraft fuselage panel; and a plurality of electric cylinders radially provided on each of the plurality of header plates, the electric cylinders moving respective receiving members in a radial direction of the aircraft fuselage panel, the receiving members contacting a skin included in the aircraft fuselage panel.