Dimensioning Extension Lines for Small Text Space
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Solution Overview
Problem
In computer-aided modeling, small dimensions often result in insufficient space for dimension texts between extension lines, leading to formatting issues in drawings.
Innovation Solution
The method involves exaggerating at least one extension line to create more space for the dimension text without altering the dimension itself, allowing for proper placement and readability by adjusting the length of extension lines based on predefined limits and rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If extension lines are kept at standard length for small dimensions, then the dimensioning process is simple and fast, but there is insufficient space for dimension text between extension lines
Solution Approach 1:
The patent applies local quality by making extension lines non-uniform: most extension lines maintain standard length, while only specific extension lines associated with small dimensions are exaggerated in length. This localized modification provides sufficient space for dimension text where needed without unnecessarily complicating the overall dimensioning system.
Solution Approach 2:
The patent changes the length parameter of extension lines based on the size of the dimension being annotated. When a dimension is detected as small (insufficient space for text), the system automatically adjusts the length parameter of the relevant extension lines to create adequate space, while keeping other extension lines at their standard length.
2Ease of operation
If extension lines are exaggerated to fit dimension text, then dimension text placement is improved, but the visual accuracy of the dimension representation may be compromised
Solution Approach 1:
The patent segments the dimensioning system into multiple independent components: the actual dimension geometry (which remains accurate) and the extension lines (which can be exaggerated for text placement). This segmentation allows the dimension text to be placed correctly without distorting the actual dimensional representation, as the extension lines are visually distinct from the dimensioned features.
Solution Approach 2:
The patent uses extension lines as an intermediary element between the dimensioned object and the dimension text. By modifying only this intermediary (the extension lines) rather than the actual dimension geometry, the system achieves proper text placement while preserving the accuracy of the dimensional representation. The extension lines serve as a buffer that absorbs the visual distortion needed for text accommodation.
3Ease of manufacture
If standard dimensioning procedures are used for all dimensions, then the process is consistent and simple, but small dimensions cannot accommodate dimension text properly
Solution Approach 1:
The patent introduces dynamics into the dimensioning process by making extension line lengths adaptive rather than fixed. The system automatically detects when a dimension is small and dynamically adjusts the length of relevant extension lines. This dynamic behavior maintains simplicity for standard dimensions while automatically providing proper text accommodation for small dimensions without requiring manual intervention.
Solution Approach 2:
The patent implements feedback by continuously monitoring the space available between extension lines and comparing it against the required space for dimension text. When insufficient space is detected, the system triggers automatic adjustment of extension line lengths. This feedback mechanism ensures that dimension text readability is maintained while keeping the overall process automated and simple.
Data Source
AI summary
An object to be dimensioned may have such a small dimension that the dimension text will not fit within a space defined by extension lines. A dimensioning method is provided that exaggerates extension lines (24) of small dimensions so that the dimension text will fit within the space the dimension line has between the extensions lines although the dimension itself is not changed.