[
 {
  "件号": "P01_胸板",
  "名称": "胸腔支撑立柱（高刚性箱型梁+榫卯台座+走线窗）",
  "类型": "3D打印",
  "数量": 1,
  "体积cm3": 809.6,
  "质量g_PLA": 1003.9,
  "包络": "[-148.0 95.0 22.0 .. -82.0 161.0 470.0] (66.0x66.0x448.0)",
  "说明": "V2高刚度立柱：66x66mm厚壁封闭箱梁+8mm壁厚+顶部P03榫卯台座+两组大圆角工艺走线窗"
 },
 {
  "件号": "P02_底脚",
  "名称": "测试台架底座（高刚度抗倾覆底盘+嵌装定位槽）",
  "类型": "3D打印",
  "数量": 1,
  "体积cm3": 1166.9,
  "质量g_PLA": 1446.9,
  "包络": "[-186.3 16.7 -0.0 .. 76.3 239.3 22.0] (262.6x222.6x22.0)",
  "说明": "V2加长大底盘：200x320mm重型防倾覆底座+12mm嵌装槽+4xM6夹持槽+底部走线槽"
 },
 {
  "件号": "P03_肩吊臂",
  "名称": "肩关节基座机壳（高刚性规整风道散热版）",
  "类型": "3D打印",
  "数量": 1,
  "体积cm3": 745.3,
  "质量g_PLA": 924.2,
  "包络": "[-148.0 91.0 455.0 .. 2.0 165.0 647.0] (150.0x74.0x192.0)",
  "说明": "V2浑然一体散热版：Ø73mm机舱+7组轴向散热格栅+PCBA对流窗+一体化顺滑斜挑立柱"
 },
 {
  "件号": "P04_肩叉",
  "名称": "肩叉（深度圆角版：顶部凸台R=8mm圆弧+圆盘边缘R=10mm）",
  "类型": "3D打印",
  "数量": 1,
  "体积cm3": 347.3,
  "质量g_PLA": 430.7,
  "包络": "[-16.5 90.0 455.0 .. 53.5 166.0 648.0] (70.0x76.0x193.0)",
  "说明": "V2圆角：顶部方形突起改为R=8mm圆弧过渡，圆盘边缘R=10mm大圆角；散热腔顶板改为与前后安装环同一R=35圆柱凹弧（J2轴心），腔体保持敞开散热"
 },
 {
  "件号": "P05_大臂旋转座",
  "名称": "大臂旋转座（深度圆角版：16层Loft+内部L转角2mm倒角+动态零干涉）",
  "类型": "3D打印",
  "数量": 1,
  "体积cm3": 162.9,
  "质量g_PLA": 202.0,
  "包络": "[-16.5 93.0 389.0 .. 53.5 174.0 525.0] (70.0x81.0x136.0)",
  "说明": "V2圆角：Loft外轮廓R=10mm，L型转角内部2mm倒角，彻底清除立壁保证J2全角度0干涉"
 },
 {
  "件号": "P06_大臂骨架",
  "名称": "大臂骨架（平整版+前侧圆形过渡：顶部R10.5圆弧卷入）",
  "类型": "3D打印",
  "数量": 1,
  "体积cm3": 182.9,
  "质量g_PLA": 226.8,
  "包络": "[-16.5 91.8 297.0 .. 53.5 163.0 390.1] (70.0x71.2x93.1)",
  "说明": "平整版：XZ两侧竖直直面，前侧上段竖直面+R10.5圆形过渡（净空P07立柱带3mm，J4不再卡死），电机散热腔+M4/J3接口"
 },
 {
  "件号": "P07_小臂骨架",
  "名称": "小臂骨架（L型圆弧加强版：R=28mm双相切内凹大圆弧+消除悬空块）",
  "类型": "3D打印",
  "数量": 1,
  "体积cm3": 173.6,
  "质量g_PLA": 215.3,
  "包络": "[-16.5 92.0 187.0 .. 53.5 174.0 367.0] (70.0x82.0x180.0)",
  "说明": "V2 L型结构：+Y侧背脊立柱避让大臂骨架，过渡区采用与顶面和立柱双相切的R=28mm平滑内凹大圆弧，彻底消除直斜线折角与悬空阶梯小块，下方M5电机半包散热，俯仰大范围自由运动零干涉"
 },
 {
  "件号": "P08_腕偏转座",
  "名称": "腕部转接座（深度圆角版：16层Loft+内部L转角2mm倒角+动态零干涉）",
  "类型": "3D打印",
  "数量": 1,
  "体积cm3": 163.1,
  "质量g_PLA": 202.3,
  "包络": "[-16.5 93.0 120.0 .. 53.5 174.0 257.0] (70.0x81.0x137.0)",
  "说明": "V2圆角：Loft外轮廓R=10mm，L型转角内部2mm倒角，彻底清除立壁保证J5全角度0干涉"
 },
 {
  "件号": "P09_工具法兰",
  "名称": "末端工具法兰（深度圆角版：外轮廓R=3mm）",
  "类型": "3D打印",
  "数量": 1,
  "体积cm3": 98.8,
  "质量g_PLA": 122.5,
  "包络": "[-16.5 93.0 93.0 .. 53.5 163.0 121.1] (70.0x70.0x28.1)",
  "说明": "V2圆角：外轮廓R=3mm，法兰面倒角2mm"
 },
 {
  "件号": "M1_J1",
  "名称": "J1 电机模组",
  "类型": "已有/电机",
  "数量": 1,
  "体积cm3": 116.4,
  "质量g_PLA": 144.4,
  "包络": "[-51.0 96.2 578.3 .. 5.0 159.8 641.9] (56.0x63.6x63.6)",
  "说明": "复用 电机.STEP"
 },
 {
  "件号": "M2_J2",
  "名称": "J2 电机模组",
  "类型": "已有/电机",
  "数量": 1,
  "体积cm3": 116.4,
  "质量g_PLA": 144.4,
  "包络": "[-13.3 100.0 458.1 .. 50.3 156.0 521.7] (63.6x56.0x63.6)",
  "说明": "复用 电机.STEP"
 },
 {
  "件号": "M3_J3",
  "名称": "J3 电机模组",
  "类型": "已有/电机",
  "数量": 1,
  "体积cm3": 116.4,
  "质量g_PLA": 144.4,
  "包络": "[-13.3 96.1 389.0 .. 50.3 159.7 445.0] (63.6x63.6x56.0)",
  "说明": "复用 电机.STEP"
 },
 {
  "件号": "M4_J4",
  "名称": "J4 电机模组",
  "类型": "已有/电机",
  "数量": 1,
  "体积cm3": 116.4,
  "质量g_PLA": 144.4,
  "包络": "[-13.3 100.0 300.1 .. 50.3 156.0 363.7] (63.6x56.0x63.6)",
  "说明": "复用 电机.STEP"
 },
 {
  "件号": "M5_J5",
  "名称": "J5 电机模组",
  "类型": "已有/电机",
  "数量": 1,
  "体积cm3": 116.4,
  "质量g_PLA": 144.4,
  "包络": "[-13.3 100.0 190.1 .. 50.3 156.0 253.7] (63.6x56.0x63.6)",
  "说明": "复用 电机.STEP"
 },
 {
  "件号": "M6_J6",
  "名称": "J6 电机模组",
  "类型": "已有/电机",
  "数量": 1,
  "体积cm3": 116.4,
  "质量g_PLA": 144.4,
  "包络": "[-13.3 96.1 120.0 .. 50.3 159.7 176.0] (63.6x63.6x56.0)",
  "说明": "复用 电机.STEP"
 }
]