Designing Seamless Patterns for Rollers
无缝矢量纹理与辊纹单元设计
标签：无缝纹理, 矢量设计, 辊周长, 搭接量, 数字工具
辊纹设计的数字起点是"无缝单元"：在 Illustrator 等矢量软件中做左右上下无缝平铺的纹理单元，单元宽度必须整除辊周长——φ60 mm 辊周长 188.5 mm，设计 12 个单元即单宽 15.7 mm。出图前为细线加 0.05–0.1 mm 桥接，防止雕辊后孤立碎块脱落。辊压走带时相邻行程搭接 0.2–0.5 mm，靠纹理内的渐变过渡隐藏接缝；宽板多行程辊压时，先在废料上校验两次行程的错位量再上正式板。
The digital starting point is the seamless tile: build a pattern unit that tiles in both axes in vector software, and make its width divide the roller circumference — a φ60 mm roller is 188.5 mm around, so 12 units give a 15.7 mm tile. Bridge fine lines by 0.05–0.1 mm before engraving so isolated chips don't break out of the roll face. Overlap successive passes 0.2–0.5 mm and hide seams in gradient areas of the pattern; on wide sheet, verify pass-to-pass registration on scrap before committing stock.
