3D Component Inspection Using Scan Progress Alignment
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Solution Overview
Problem
Existing component inspection methods require excessive time due to irradiating a laser beam over the entire outer surface of components, which can be obstructed, leading to incomplete inspection and prolonged duration.
Innovation Solution
A method involving a three-dimensional sensor to scan a region including the target component, align design and measurement data, calculate scanning progress, and compare it to a threshold to efficiently determine when to present inspection completion, allowing for early-stage detailed alignment and reduced inspection time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If laser beam is irradiated to the entire outer surface of the component, then complete inspection data is obtained, but inspection time becomes longer
Solution Approach 1:
The patent applies partial action by performing detailed alignment and inspection only on regions where progress degree indicates sufficient data has been collected. Instead of processing the entire component surface uniformly, the system selectively processes regions based on the proportion of collected measurement data, reducing overall inspection time while maintaining completeness where needed.
Solution Approach 2:
The inspection process is segmented into multiple stages based on progress degree thresholds. The component surface is divided into regions with different inspection priorities, allowing the system to focus computational resources on critical areas while reducing processing time for areas with sufficient data coverage.
2Measurement precision
If laser beam is irradiated to the entire outer surface of components in an assembly, then complete spatial arrangement inspection is achieved, but inspection time becomes longer due to blockage by other components
Solution Approach 1:
The system performs inspection operations selectively based on progress degree for each target component. When the progress degree reaches a predetermined threshold, the system determines that sufficient data has been collected and stops further inspection for that component, avoiding wasted time on areas blocked by other components or already sufficiently inspected.
Solution Approach 2:
The patent implements preliminary determination of inspection sufficiency by continuously monitoring progress degree during the scanning process. This allows the system to pre-identify when a component has been sufficiently inspected and eliminate unnecessary subsequent inspection steps, reducing overall inspection time for assemblies with multiple components.
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
Reduces inspection time by enabling early-stage detailed alignment and efficient scanning progress monitoring, thereby minimizing the overall time required for component inspection.
Implementation Method 1
it is necessary to irradiate laser beam to the entire outer surface of the component
Implementation Method 2
obtaining a measurement data including a part of an outer surface of the target component by scanning a region including the target component from outside by a three-dimensional sensor
Data Source
AI summary
A component inspection method is for performing inspection related to a spatial arrangement state of at least one component as a target in an assembly formed by assembling a plurality of components. The method includes gradually obtaining a measurement data including a part of an outer surface of the target component by scanning a region including the target component from outside by a three-dimensional sensor; obtaining a design data including an outer shape of the target component and a positional relationship of the target component in the assembly; aligning the region including the target component in the design data with the region including the target component in the measurement data; calculating a progress degree which indicates a degree to which the scanning has progressed, based on the alignment; comparing the progress degree to a predetermined threshold value; and presenting an information that the progress degree exceeds the threshold value, when the progress degree exceeds the threshold value.