Embroidery Data Creation Adjusting Needle Drop Density
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Solution Overview
Problem
Existing embroidery data creation systems face challenges in maintaining uniform needle drop point density, leading to issues with thread bunching and degraded embroidery quality, especially when sewing complex shapes with significant length differences between contours.
Innovation Solution
An embroidery data creation apparatus and program that includes a turning point judgment device, reference point determination, area determination, and adjustment process selection to adjust needle drop points based on thread density, thread thickness, and stitch pitch length, allowing for the selection of processes to maintain, change, or delete turning points to achieve uniform density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of turns is adjusted to achieve proper needle drop point density on a longer contour, then the density on the longer contour becomes proper, but the needle drop points become dense on the shorter contour causing thread bunching
Solution Approach 1:
The patent prevents thread bunching by locally adjusting the number of turns on the longer contour rather than uniformly increasing turns across both contours. The control device specifically increases turns on the longer contour to match the needle drop point density of the shorter contour, thereby avoiding excessive density and thread bunching on the shorter contour.
2Manufacturing precision
If the number of turns between contours is increased to proper density on shorter contour, then needle drop point density becomes proper on shorter contour, but the computing process becomes complicated
Solution Approach 1:
The patent simplifies the computing process by changing the parameter adjustment approach from calculating middle drop points based on complex area shapes to simply adjusting the number of turns on the longer contour. The control device calculates the required turn adjustment based on the length difference between contours and the desired needle drop point density, providing a straightforward computational method.
3Manufacturing precision
If the number of turns between contours is increased to proper density on shorter contour, then needle drop point density becomes proper on shorter contour, but the position of middle drop point depends on shape of area causing non-uniformity
Solution Approach 1:
The patent eliminates shape-dependent non-uniformity by applying a universal adjustment method based on contour length difference rather than shape-specific middle drop point calculations. The control device adjusts the number of turns on the longer contour based on its length relative to the shorter contour, ensuring consistent thread density uniformity regardless of the area shape.
Data Source
AI summary
An embroidery data creation apparatus for adjusting the density of needle drop points, and a computer readable recording medium having an embroidery data creation program recorded therein which includes instructions for adjusting the density of needle drop points. The embroidery data creation apparatus may include a device for judging whether a needle drop point is a turning point, a device for determining a reference point, a device for determining whether a turning point is within a predetermined area from the reference point, and a device for changing a coordinate of the turning point, deleting the turning point, or maintaining of a coordinate of the turning point.