CNC Multi-pass & Roller Feed Parameters
数控旋压多道次与轮进给参数
标签：多道次, 进给参数, 减薄率, 滚轮圆角, 工艺窗口, 数控
紫铜数控旋压工艺窗口：道次减薄率 10–20%，累计减薄超 60% 时中间退火（600 °C，10 min，氩气保护防氧化）。滚轮圆角 R 与板厚比取 1.5–2.5 倍，进给过快（>0.8 mm/r）会出现螺旋纹与壁厚骤减，过慢（<0.2 mm/r）则效率低且易局部反挤。每道次记录壁厚实测值并回传修正下一道次轨迹，可将最终偏差压到 ±0.05 mm。
A practical window for CNC copper spinning: 10–20% reduction per pass; when cumulative reduction exceeds 60%, anneal mid-process (600 °C, 10 min, argon to avoid scale). Set roller nose radius at 1.5–2.5× sheet thickness. Feed above 0.8 mm/r causes spiral marks and local over-thinning; below 0.2 mm/r is slow and induces reverse extrusion. Feedback-correct each pass from measured wall data to hold final error within ±0.05 mm. ---