3D Model Dimension Creation via Orthogonal Face Association

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Solution Overview

Problem

Creating dimensions for a 3D model that are correctly associated with its elements, such as faces, edges, and vertices, is inefficient and time-consuming due to the need for manual alignment and selection on a 3D model displayed on a screen.

Innovation Solution

A dimension creation device that includes element selection means, direction indication means, and dimension creation means to efficiently associate dimensions with orthogonal faces of a 3D model by selecting target elements and indicating a direction, ensuring correct association with orthogonal faces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If dimensions are created by manually selecting elements and aligning on a 3D model displayed on a screen, then the dimension can be correctly associated with model elements, but the process takes more time and effort compared to 2D drawing dimension creation

Engineering Contradiction:
Improvecorrect association of dimension with model elementsVSAvoidtime and effort for dimension creation
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary actions by automatically determining orthogonal faces and their relationships before the user creates dimensions. When a user selects a target element and direction, the system pre-calculates the first and second orthogonal faces and verifies their orthogonality, so the dimension can be correctly associated with model elements without requiring manual alignment operations.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system makes the dimension creation process self-service by automatically identifying orthogonal faces and checking their orthogonality relationships. The computer automatically determines which faces are orthogonal to the target element in the specified direction, eliminating the need for users to manually align or verify geometric relationships.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If the 3D model is moved or rotated to change the displayed state for element selection, then faces, edges, or vertices can be correctly determined, but the operator burden increases and the procedure becomes more complex

Engineering Contradiction:
Improveease of element selectionVSAvoidcomplexity of dimension creation procedure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The system replaces the mechanical interaction of manually moving and rotating the 3D model on screen with an automated computational system. Instead of requiring users to physically manipulate the model view to select elements, the computer automatically determines orthogonal faces based on the target element and direction, substituting manual mechanical operations with automated geometric calculations.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system introduces an intermediary computational layer between the user's dimension creation request and the 3D model elements. When a user specifies a target element and direction, the computer acts as an intermediary to automatically identify the orthogonal faces and verify their relationships, eliminating the need for users to directly manipulate or visually search for the correct faces.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If automatic dimension creation is implemented without orthogonal face verification, then the process becomes faster, but the dimension may not be correctly associated with the intended elements

Engineering Contradiction:
Improvespeed of dimension creationVSAvoidaccuracy of element association
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system implements feedback by automatically verifying the orthogonality relationship between the target element and the identified faces. When a user selects a target element and direction, the computer determines candidate orthogonal faces and checks whether they actually satisfy the orthogonality condition, providing feedback to ensure correct association while maintaining automated speed.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary verification of orthogonality relationships before finalizing the dimension association. By pre-checking whether the determined faces are truly orthogonal to the target element in the specified direction, the system ensures accuracy is built into the automated process from the beginning, not added as a later validation step.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12400044B2Dimension creation device, dimension creation method, and recording medium
Publication Date: 2025.08.26 MITSUBISHI ELECTRIC CORP
  • US12400044B2 patent drawing
  • US12400044B2 patent drawing
  • US12400044B2 patent drawing

AI summary

In a dimension creation device, an element selector selects a first target element and a second target element from elements of a three-dimensional model. A direction indicator indicates a direction of a dimension to be created. A dimension creator creates, when the element selector selects a vertex or an edge as each of the first target element and the second target element and the three-dimensional model includes a first orthogonal face including the first target element and orthogonal to the direction indicated by the direction indicator and a second orthogonal face including the second target element and orthogonal to the direction indicated by the direction indicator, the dimension between the first orthogonal face and the second orthogonal face in the direction indicated by the direction indicator in a manner associated with the first orthogonal face and the second orthogonal face.