Moving-Line Fuselage Cut-Out Assembly With RFID Indexing
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Solution Overview
Problem
The manufacturing of large composite aircraft parts is inefficient due to the need for complex and time-consuming tasks like cutting out windows and doors, which require significant resources and space, and involve post-trimming and disposal of excess material, disrupting the manufacturing process.
Innovation Solution
The implementation of integrated cut-out stations along a continuous-line assembly process for composite parts, utilizing indexing units and RFID technology to precisely and rapidly cut out windows and doors as the fuselage moves along a track, allowing for simultaneous processing of multiple sections and reducing the need for manual intervention and material disposal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional batch processing with manual cutting operations is used, then cutting precision can be maintained, but manufacturing productivity is significantly reduced due to time-consuming operations and frequent repositioning
Solution Approach 1:
The patent implements continuous linear motion of the fuselage through the assembly line, eliminating stopping and repositioning. Multiple cutting stations operate simultaneously on different sections as they pass by, maintaining continuous productive action throughout the manufacturing process.
Solution Approach 2:
The manufacturing process is divided into multiple simultaneous cutting stations arranged linearly, each handling specific cutting tasks. This segmentation allows parallel processing of multiple fuselage sections, dramatically increasing overall productivity while maintaining precision at each station.
2Productivity
If multiple cutting stations operate simultaneously on multiple fuselage sections, then manufacturing efficiency increases, but system complexity increases due to coordination requirements
Solution Approach 1:
The indexing unit with RFID reading capability serves multiple functions: identifying fuselage sections, tracking their position in the sequence, and coordinating with multiple cutting stations. This universal indexing system simplifies the coordination of complex multi-station operations.
Solution Approach 2:
The RFID indexing system provides real-time feedback on fuselage section identification and position, enabling automated coordination between multiple cutting stations. This feedback mechanism allows the system to dynamically adjust operations without increasing manual complexity.
3Area of stationary object
If integrated continuous-line cutting is implemented, then space utilization is optimized and manual intervention is reduced, but initial device complexity increases due to integrated station design
Solution Approach 1:
The system transitions from a two-dimensional batch processing layout to a one-dimensional continuous linear arrangement. Multiple cutting stations are arranged along the linear path, allowing simultaneous operations without requiring additional factory floor space, thus optimizing space utilization.
Solution Approach 2:
The automated cutting stations with RFID indexing operate autonomously without manual intervention. The system self-coordinates the cutting operations based on automated identification and positioning, reducing the need for complex manual control systems despite the integrated design.
4Measurement precision
If RFID indexing is used to identify and track fuselage sections, then positioning precision is improved, but manufacturing cost increases due to advanced technology implementation
Solution Approach 1:
Instead of using complex physical measurement systems for positioning, the patent uses RFID tags that store identification information. The indexing unit reads this copied information to determine fuselage section identity and position, achieving high positioning precision through information copying rather than physical measurement.
Solution Approach 2:
The patent replaces traditional mechanical positioning and measurement systems with RFID-based electromagnetic identification. This substitution achieves superior positioning precision while reducing the complexity and cost of mechanical measurement devices.
Data Source
AI summary
Apparatus and methods are provided for fabrication of a structure, for example, a half barrel section of a fuselage. The apparatus includes an indexing unit dimensioned for coupling to an indexing feature disposed on the structure. The structure proceeds along a process direction during fabrication. A cutting station cuts out manufacturing excess from the structure to form, for example, openings for windows and doors. A method for fabrication of a structure includes indexing a structure to a cutting station based on an indexing feature associated or located on the structure. The method includes operating the cutting station to cut manufacturing excess from the structure. A method includes removing cut sections of the manufacturing excess and routing these sections away from the cutting station.