3D-printed Resin Dies for Irregular Sinking
3D 打印树脂凹模的异形下凹
标签：3D 打印, 树脂凹模, 异形下凹, 小批量
非半球异形下凹可用光固化树脂打印凹模：CAD 建模后模壁≥6 mm，底部掏空并加 3–4 mm 筋防裂，摆放方向避免层间受拉；选韧性树脂（ABS-like），打印后 405 nm 后固化 30 min。铜板退火后覆于模口，用包胶锤逐步敲入。树脂模寿命约 30–80 次，磨损后可打磨翻新，制作周期仅数小时，特别适合小批量异形件开发。
Irregular (non-hemispheric) sinking can use vat-photopolymer printed dies: after CAD, keep walls ≥6 mm, hollow the base with 3–4 mm ribs against cracking, and orient printing to avoid interlayer tension; use a tough resin (ABS-like) and post-cure 30 min at 405 nm. Anneal the copper, lay it over the die mouth, and sink gradually with a plastic-faced mallet. Die life is about 30–80 strikes and worn dies can be refaced—only hours to print, ideal for small-batch development. ---