PMI Relationship Grouping in 3D CAD Models
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Solution Overview
Problem
In three-dimensional CAD, product manufacturing information (PMI) such as nominal dimensions and tolerances are often displayed as independent annotations, making it difficult to interpret and utilize consistently across various processes, leading to potential errors and inefficiencies.
Innovation Solution
An information processing apparatus determines relationships between different PMI elements within three-dimensional model data and generates information indicating these relationships, allowing for easier interpretation and utilization by grouping and displaying relevant PMI elements together.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If pieces of PMI are added as independent information to three-dimensional model data, then the model data can contain comprehensive manufacturing information, but interpretation of the PMI pieces becomes difficult and requires manual interpretation
Solution Approach 1:
The patent merges multiple independent PMI elements by establishing semantic relationships between them. The relationship generation unit combines PMI pieces based on their positional, geometric, and manufacturing relationships, creating an integrated structure that maintains completeness while improving interpretability through automated relationship analysis.
2Quantity of substance
If pieces of PMI are added as independent information to three-dimensional model data, then the model data can contain comprehensive manufacturing information, but efficient use of PMI becomes difficult
Solution Approach 1:
The patent implements feedback by using the generated relationship information to improve subsequent PMI processing. The relationship data between PMI elements is fed back into the system to automatically guide interpretation and utilization processes, enabling more efficient use of PMI without requiring manual intervention for each PMI piece.
3Manufacturing precision
If multiple independent PMI elements are included in three-dimensional model data, then detailed manufacturing specifications can be provided, but consistent interpretation across processes becomes difficult
Solution Approach 1:
The patent creates universal relationship information that can be consistently applied across different manufacturing processes. The generated PMI relationships serve multiple functions: they provide detailed specifications while simultaneously ensuring consistent interpretation across estimation, drawing check, model design, jig design, and inspection processes through automated relationship analysis.
Data Source
AI summary
An information processing apparatus includes a processor configured to: determine a relationship between first product manufacturing information and second product manufacturing information included in three-dimensional model data; and generate, on a basis of the determined relationship, information indicating the relationship between the first product manufacturing information and the second product manufacturing information.