Aircraft Crossbeam Positioning Device for Bore Alignment
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Solution Overview
Problem
In the aeronautical sector, the assembly of crossbeams to aircraft frames requires precise positioning, but drilling operations generate shavings and dust that can pollute sensitive equipment, such as electronic components, within the fuselage structure.
Innovation Solution
A mechanical positioning device is used to align bores on aircraft pieces, such as crossbeams and frames, along multiple geometric axes, ensuring precise correspondence without the need for additional drilling, utilizing elements like wedges, chocks, and electromagnetic positioning systems to maintain alignment and prevent pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If drilling operations are performed to assemble crossbeams to frames, then precise positioning of bores is achieved, but shavings and dust are generated that can pollute sensitive equipment
Solution Approach 1:
The patent applies preliminary action by pre-drilling bores in crossbeams and frames to their definitive diameters before final assembly. This allows the components to be prepared in advance with precise bore positioning, eliminating the need for drilling operations during final assembly when sensitive equipment is present in the fuselage.
Solution Approach 2:
The patent extracts the drilling operation from the final assembly process. By pre-drilling bores in separate preparation steps and using mechanical positioning elements during assembly, the harmful drilling operation is separated from the clean assembly environment, preventing pollution of sensitive equipment.
2Manufacturing precision
If additional drilling operations are performed during assembly, then bore correspondence is achieved, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
The patent uses preliminary action by pre-drilling all bores to their final dimensions before assembly. Mechanical positioning elements are also prepared in advance, allowing the actual assembly process to be simplified to merely positioning and joining operations without complex drilling procedures.
Solution Approach 2:
The patent introduces mechanical positioning elements as intermediaries between the pre-drilled crossbeams and frames. These elements serve as geometric references that facilitate precise bore correspondence without requiring complex drilling operations during assembly, simplifying the overall process.
3Ease of manufacture
If drilling is performed in situ within the fuselage, then crossbeams can be assembled to frames, but the crowded environment makes drilling operations difficult and generates pollution
Solution Approach 1:
The patent applies preliminary action by completing all drilling operations before components are installed in the crowded fuselage environment. Crossbeams and frames are prepared with pre-drilled bores in advance, allowing assembly to proceed without drilling in the confined space, thus avoiding pollution of sensitive equipment.
Solution Approach 2:
The patent extracts the drilling operation from the in-situ assembly process within the fuselage. By separating the drilling operation (performed in advance on individual components) from the assembly operation (performed in the crowded environment), the harmful effects of drilling are eliminated from the sensitive assembly environment.
4Manufacturing precision
If mechanical positioning elements are used to align bores, then precise positioning is achieved without additional drilling, but the device complexity increases
Solution Approach 1:
The patent introduces mechanical positioning elements as intermediaries that provide geometric references for aligning bores. These elements (such as positioning pins, jigs, or fixtures) enable precise positioning without complex drilling operations, trading simple mechanical components for the elimination of complex drilling procedures.
Solution Approach 2:
The patent replaces the mechanical drilling system with a mechanical positioning system. Instead of using drilling machinery to achieve bore correspondence, the invention uses positioning elements that mechanically guide and align the pre-drilled bores, substituting a simpler positioning mechanism for a complex drilling operation.
Data Source
AI summary
A device for positioning a first piece relative to a second piece. The first piece comprises a free end with a first bore and the second piece comprises an engagement part with a second bore intended to come into correspondence with the first bore. The first and second bore are drilled to the definitive diameter thereof prior to the relative positioning thereof. The device comprises one or more positioning elements, which are able to position the first bore relative to the second bore along at least one of three geometric axes.