GD&T to 3D Variation Model Translation System
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Solution Overview
Problem
There is a longstanding issue in translating variation information effectively between three-dimensional (3D) variation analysis simulation tools and Geometric Dimensioning & Tolerancing (GD&T) callouts, leading to inconsistent and costly over- or under-constraint of component tolerances due to the fundamental differences between the two languages.
Innovation Solution
A method and system for consistently translating GD&T information into variation parameters for 3D variation analysis tools, and vice versa, using a processor and computer-readable data storage device to receive, translate, and output the necessary parameters, with specific processes for various GD&T callouts and tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If analysts use ad-hoc translation methods based on experience and intuition, then translation flexibility is maintained, but translation consistency and reliability deteriorate
Solution Approach 1:
The patent transforms the translation process from a subjective parameter-based approach (analyst experience) to an objective rule-based system. By defining specific translation rules that map GD&T parameters to variation analysis parameters, the system eliminates variability introduced by different analysts while maintaining the ability to handle diverse GD&T callouts through comprehensive rule coverage.
Solution Approach 2:
The patent introduces an intermediary translation layer between GD&T and variation analysis languages. This intermediary system consists of standardized translation rules that act as a mediator, converting GD&T specifications into variation analysis parameters through a consistent, rule-based process rather than direct analyst interpretation.
2Manufacturing precision
If GD&T is strictly followed for component tolerances, then manufacturing precision is improved, but device complexity increases due to the need for translation between languages
Solution Approach 1:
The patent segments the translation process into distinct, manageable rules for different GD&T callout types. By breaking down the complex translation task into separate rules for position, orientation, profile, and other GD&T features, the system maintains manufacturing precision while reducing the perceived complexity through modular, organized translation logic.
Solution Approach 2:
The patent creates a universal translation framework that handles multiple types of GD&T callouts through a single rule-based system. This multi-functional approach allows the same translation mechanism to process various GD&T features (position, orientation, profile, etc.), reducing overall system complexity compared to having separate translation methods for each callout type.
3Manufacturing precision
If component tolerances are over-constrained to ensure accuracy, then manufacturing precision is improved, but productivity decreases due to increased component costs
Solution Approach 1:
The patent implements a feedback mechanism where the translation system continuously refines tolerance allocations based on assembly variation analysis results. By translating GD&T requirements into variation models, performing analysis, and using the results to adjust tolerance specifications, the system achieves accurate variation modeling while optimizing component costs through iterative refinement rather than initial over-constraint.
Solution Approach 2:
The patent applies partial action by translating only the necessary GD&T callouts into variation parameters based on their relevance to the specific analysis objective. Rather than translating all tolerances equally, the system selectively processes callouts that directly impact the assembly variation being analyzed, reducing unnecessary computational overhead and cost implications from over-constraining non-critical components.
Data Source
AI summary
Systems and methods are disclosed for consistently translating or converting between geometric dimensioning and tolerancing information and variation parameters for a three dimensional variation analysis tool. The methods and systems may receive geometric dimensioning and tolerancing information; translate, with a computer, the received geometric dimensioning and tolerancing information into variation parameters for a three dimensional variation analysis tool; and output the variation parameters.