CAD Resolution Selection for Reliable Geometric Constraints
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Solution Overview
Problem
Computer-aided design (CAD) models often behave inconsistently due to inappropriate resolution values, leading to sub-optimal geometric constraints and manufacturing processes, especially when objects from different sources with varying dimensions and resolution values are assembled.
Innovation Solution
An apparatus and method that determine geometric relationships within a CAD model, select resolution values based on specific criteria, update the model, and generate instructions for a manufacturing process to ensure consistent geometric constraints and optimal manufacturing outcomes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-set resolution values are used in the CAD model, then the model can be processed, but geometric constraints may not be applied correctly and the model behaves inconsistently
Solution Approach 1:
The patent dynamically adjusts resolution values based on geometric relationships and tolerance requirements. The system calculates appropriate resolution values by analyzing the geometric constraints and modifying the resolution parameters to ensure constraints are applied correctly, resolving the contradiction between model processing capability and constraint application accuracy.
2Adaptability or versatility
If objects from different sources with varying resolution values are assembled, then the CAD model can include diverse components, but the geometric constraints cannot be reliably applied
Solution Approach 1:
The patent applies different resolution values to different regions and objects within the CAD model based on their specific geometric relationships and tolerance requirements. Instead of using a uniform resolution value, the system locally adjusts resolution parameters for each object or feature, allowing diverse components to be integrated while maintaining reliable geometric constraint application.
3Ease of operation
If manual positioning and orientation is performed to achieve desired geometric relationships, then objects can be positioned, but the geometric constraints are not well-defined and the model is sub-optimal
Solution Approach 1:
The patent performs preliminary analysis of geometric relationships and automatically determines appropriate resolution values before finalizing the model. By pre-calculating the required resolution based on geometric constraints and tolerance requirements, the system enables proper constraint application without requiring manual positioning adjustments, improving both ease of operation and manufacturing precision.
Data Source
AI summary
An apparatus includes a processor configured to determine a set of geometric relationships in relation to a set of object representations within a computer aided design model, where each geometric relationship is represented by a number, and is configured to determine a set of intervals within the set of geometric relationships that meet a resolution interval criterion, where each interval is a numerical range that does not include numbers representing the geometric relationships, and is configured to select a set of resolution values. Each resolution value is within one of the intervals according to a resolution setting criterion. The processor is configured to update the CAD model by implementing the set of resolution values, generate instructions for controlling a manufacturing process using the updated CAD model, and output the instructions to a manufacturing system for control of the manufacturing process according to the instructions.