Embroidery Data Generation for Hole Interior Patterns
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Solution Overview
Problem
Existing embroidery technologies cannot form embroidery patterns on the inside of holes created in sewing workpieces, limiting design possibilities.
Innovation Solution
An embroidery data generating device and program that acquire hole data, embroidery pattern data, and generate bridge data to create line segments joining the pattern with the hole's peripheral edge, allowing for the formation of embroidery patterns inside holes through bridge stitches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If overcasting is performed on the peripheral edge of the hole, then the peripheral edge is finished beautifully, but an embroidery pattern cannot be formed on the inside of the hole
Solution Approach 1:
The invention divides the embroidery data generation into separate functional modules: hole data acquisition, embroidery pattern data acquisition, polygon generation, line segment generation, and bridge data generation. This segmentation allows independent optimization of peripheral edge finishing (overcasting) and interior pattern formation (embroidery), resolving the contradiction by enabling both functions to coexist without interfering with each other.
Solution Approach 2:
The invention introduces bridge stitches as an intermediary element that connects the embroidery pattern to the peripheral edge of the hole. These bridge stitches act as a mediator, allowing the embroidery pattern to be positioned and secured within the hole while maintaining the aesthetic peripheral edge finishing achieved through overcasting. The bridge data generating portion creates specific stitch patterns that facilitate this connection.
2Stability of the object's composition
If a minimum polygon is generated to encompass the embroidery pattern, then the pattern shape is maintained, but the complexity of data processing increases
Solution Approach 1:
The polygon acquisition portion pre-calculates and determines the minimum polygon that encompasses the embroidery pattern before the actual embroidery process begins. This preliminary action establishes the geometric boundaries and structural framework in advance, ensuring the pattern shape is maintained during execution while avoiding complex real-time calculations. The line segment generating portion then uses this pre-determined polygon to create connection lines to the hole perimeter.
Data Source
AI summary
An embroidery data generating device has a hole data acquisition portion, an embroidery data acquisition portion, a polygon acquisition portion, a line segment generating portion and a bridge data generating portion. The hole data acquisition portion acquires hole data to form a hole in a sewing workpiece. The embroidery data acquisition portion acquires embroidery data corresponding to an embroidery pattern that is arranged on the inside of the hole. The polygon acquisition portion acquires a minimum polygon that encompasses the embroidery pattern, based on the acquired embroidery data. The line segment generating portion generates a line segment that joins the polygon and a peripheral edge portion of the hole. The bridge data generating portion generates bridge data to form bridge stitches between the embroidery pattern and the peripheral edge portion of the hole, based on the generated line segments.