PDM Boolean Operation Region Segmentation for Arbitrary Bodies
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Solution Overview
Problem
Current Product Data Management (PDM) systems face challenges in accurately determining and modifying regions of arbitrary target and tool bodies during Boolean operations, particularly in maintaining the overall convex form of the target body while introducing locally concave features, which is not straightforwardly addressed by existing methods.
Innovation Solution
The system evaluates the body types, geometric, and topological characteristics of the target and tool bodies, determines spatial relations, and applies comparison criteria to identify tool face regions for adding to the target body, effectively simulating human interpretation of Boolean operations to produce modified target bodies with accurate features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If existing Boolean operation methods are used on arbitrary bodies, then the operation can be performed, but the overall convex form of the target body cannot be maintained while introducing locally concave features
Solution Approach 1:
The patent segments the tool body into multiple face regions based on their spatial relationship with the target body. Each face region is evaluated independently to determine whether it should be added or subtracted, allowing precise control over which portions create convex or concave features while maintaining the overall convex form of the target body.
Solution Approach 2:
The patent applies different operations to different face regions of the tool body based on their local characteristics. By evaluating each face region's spatial relation and convexity independently, the system can maintain the overall convex form of the target body while introducing locally concave features where needed, resolving the contradiction between global shape preservation and local feature accuracy.
2Adaptability or versatility
If arbitrary bodies are used in Boolean operations, then versatility is improved, but determining the correct regions to modify becomes complex
Solution Approach 1:
The patent performs preliminary evaluation of the target body and tool body characteristics, including their body types, convexity, and spatial relationships, before executing the Boolean operation. This preliminary analysis identifies which face regions of the tool body should be added or subtracted, simplifying the subsequent modification process and making the system adaptable to arbitrary body types without excessive complexity.
Solution Approach 2:
The patent dynamically adjusts the Boolean operation based on the evaluated characteristics of the target and tool bodies. The system determines spatial relations and convexity properties, then adaptively selects which face regions to modify, allowing versatile handling of arbitrary body types while managing complexity through intelligent, context-dependent region selection.
3Manufacturing precision
If tool face regions are identified based on spatial relation and convexity, then feature accuracy is improved, but the number of evaluations required increases
Solution Approach 1:
The patent evaluates only the necessary face regions of the tool body based on their spatial relationship with the target body, rather than performing exhaustive evaluations of all possible regions. By focusing computational resources on the relevant face regions that actually affect the Boolean operation outcome, the system achieves accurate feature representation while minimizing evaluation time.
Data Source
AI summary
Product Data Management (PDM) systems and methods. A method includes receiving a target body and a tool body, and evaluating a body type of the target body and a body type of the tool body. The method includes evaluating interactions between the target body and the tool body, and applying comparison criteria to determine spatial relation and relative convexity of an intersection between the target body and the tool body. The method includes identifying tool face regions of the tool body based on the evaluations and the determined spatial relation and relative convexity of the intersection. The method includes adding the tool face regions to the target body to produce a modified target body.