3D CAD Inspection Sequencing for Small-Batch Components
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Solution Overview
Problem
Small batch sizes in manufacturing complicate inspection decisions, leading to time-consuming and costly processes under conventional inspection methods, especially for complex components with many characteristics to inspect.
Innovation Solution
A method and system that utilize three-dimensional CAD models to identify common geometric features, generate inspection sequences, collect and analyze manufacturing data, and modify inspection frequencies based on process capability and performance metrics, reducing the need for extensive inspections when quality thresholds are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all components of a batch are inspected under conventional inspection processes, then inspection reliability is improved, but inspection time and manufacturing cost increase significantly
Solution Approach 1:
The system performs preliminary actions by collecting manufacturing data during the manufacturing process itself, before inspection occurs. This allows the inspection plan to be adjusted based on actual process performance, reducing the need for extensive post-manufacturing inspections while maintaining reliability
Solution Approach 2:
The system implements feedback by continuously monitoring manufacturing data and using it to dynamically adjust inspection frequencies. When manufacturing data indicates good process capability, inspection frequency is reduced; when issues are detected, inspection frequency increases, maintaining reliability while optimizing time usage
2Reliability
If all components of a batch are inspected under conventional inspection processes, then inspection reliability is improved, but manufacturing cost increases significantly
Solution Approach 1:
The system performs preliminary actions by collecting manufacturing data during the manufacturing process itself, before inspection occurs. This allows the inspection plan to be adjusted based on actual process performance, reducing the need for extensive post-manufacturing inspections while maintaining reliability
Solution Approach 2:
The system implements feedback by continuously monitoring manufacturing data and using it to dynamically adjust inspection frequencies. When manufacturing data indicates good process capability, inspection frequency is reduced; when issues are detected, inspection frequency increases, maintaining reliability while optimizing time usage
3Reliability
If inspection frequency is increased for small batch sizes, then inspection reliability is improved, but productivity decreases
Solution Approach 1:
The system applies dynamics by making inspection frequencies adaptive rather than static. Inspection plans are dynamically adjusted based on real-time manufacturing data and process capability analysis, allowing the system to optimize the balance between reliability and productivity for each specific manufacturing context
Solution Approach 2:
The system changes parameters by adjusting inspection frequencies and sample sizes based on process capability metrics (Cpk, Ppk). When process capability is high, inspection parameters are relaxed; when capability is low, inspection parameters are tightened, optimizing productivity while maintaining reliability
Data Source
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AI summary
A method for inspecting components includes providing a plurality of different three-dimensional component CAD models with each three-dimensional component CAD model of the plurality of different three-dimensional component CAD models sharing at least one common geometric feature. The method further includes generating an inspection sequence for the at least one common geometric feature, collecting feature manufacturing data for the at least one common geometric feature during manufacturing of a plurality of different components corresponding to the respective plurality of different three-dimensional component CAD models, analyzing the feature manufacturing data associated with the at least one common geometric feature, modifying the inspection sequence for the at least one common geometric feature based on the analyzed feature manufacturing data, and inspecting components based on the modified inspection sequence.