Automated Sanding System with Dual Thickness Measurement
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Solution Overview
Problem
Manual sanding of composite aircraft fuselage components is time-consuming and labor-intensive, often resulting in over-sanding and potential safety issues due to the lack of precision in achieving specified thicknesses.
Innovation Solution
An automated sanding system with leading and trailing roller assemblies, a sander, and a control unit that uses measuring devices and motors to accurately measure and adjust the thickness of components, ensuring precise sanding to specified dimensions while minimizing human error.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual sanding is performed to remove patches and achieve specified thickness, then labor flexibility is maintained, but time consumption and labor intensity increase significantly
Solution Approach 1:
The sanding system automatically measures thickness, controls sanding depth, and monitors progress without continuous human intervention. The system serves itself by using sensors to detect thickness and automatically adjusting sanding parameters, reducing manual labor while maintaining precision.
Solution Approach 2:
Manual mechanical sanding is replaced with an automated system that uses electronic sensors, motors, and control units. The mechanical action of manual sanding tools is substituted with an automated sanding mechanism guided by electronic thickness measurements and control algorithms.
2Manufacturing precision
If manual sanding is performed to achieve specified thickness, then adaptability to different components is maintained, but measurement precision and sanding accuracy deteriorate
Solution Approach 1:
The system continuously measures thickness before and during sanding, compares measurements to target specifications, and automatically adjusts sanding parameters. This closed-loop feedback ensures precise thickness control while adapting to variations in component geometry and patch locations.
Solution Approach 2:
The system performs preliminary thickness measurements before sanding begins, allowing it to plan the sanding path and depth in advance. This preliminary assessment enables precise thickness control by pre-calculating the required material removal while avoiding over-sanding.
3Reliability
If manual sanding is performed without precise thickness monitoring, then operational simplicity is maintained, but over-sanding occurs leading to component re-work or discard
Solution Approach 1:
Real-time thickness monitoring provides continuous feedback during sanding, allowing immediate detection when target thickness is approached. This prevents over-sanding by stopping the process at the precise moment specifications are met, eliminating the need for re-work or component discard.
Solution Approach 2:
The system takes preliminary measurements to establish the sanding target and uses this information to guide the sanding process, preventing the harmful action of over-sanding before it can occur. The system proactively adjusts sanding parameters based on initial thickness assessments.
4Productivity
If automated sanding system is implemented to reduce labor and time, then productivity increases, but initial system complexity and cost increase
Solution Approach 1:
The automated sanding system is designed to handle multiple component types, patch locations, and thickness specifications using the same basic hardware platform. This multi-functionality reduces the need for multiple specialized devices, offsetting the initial complexity investment with long-term versatility and productivity gains.
Data Source
AI summary
A sanding system may include a leading roller assembly having a first measuring device that is configured to measure a first thickness of a component at a location proximate the leading roller assembly. A trailing roller assembly may include a second measuring device that is configured to measure a second thickness of the component at a location proximate the trailing roller assembly. A sander disposed between the leading and trailing roller assemblies is configured to sand a portion of the component. A control unit is coupled to the leading roller assembly, the trailing roller assembly, and the sander. The control unit may be configured to drive the sanding system in relation to the component and operate the sander based on analysis of the first thickness measured by the first measuring device and the second thickness measured by the second measuring device.