Robot_Arm/docs/screws.json

[
  {
    "id": "S01",
    "规格": "M2 x 10",
    "螺纹": "M2",
    "长度mm": 10,
    "头型": "圆柱头内六角",
    "数量": 18,
    "位置": "J1~J6 输出毂：P04/P05/P06/P07/P08/P09 各 3 颗",
    "备注": "Ø2.8 通孔 + Ø5.6 沉孔，BCD 29（3 孔均布），旋入电机输出毂螺纹孔（深 6mm）"
  },
  {
    "id": "S02",
    "规格": "M3 x 10",
    "螺纹": "M3",
    "长度mm": 10,
    "头型": "圆柱头内六角",
    "数量": 20,
    "位置": "P04/P05/P06/P07/P08 各 4 颗 -> 下级电机尾端面",
    "备注": "Ø2.8 通孔 + Ø5.5 沉孔（深 4mm），BCD 55；装配时配合平垫吸收电机公差，与前端压盖双向夹死"
  },
  {
    "id": "S03",
    "规格": "M3 x 16",
    "螺纹": "M3",
    "长度mm": 16,
    "头型": "圆柱头内六角",
    "数量": 4,
    "位置": "P03 后置重载法兰 -> M1 电机尾端面",
    "备注": "Ø3.4 通孔 + Ø6.5 圆柱沉孔（深 5mm），BCD 55，轴向锁死防拉脱"
  },
  {
    "id": "S04",
    "规格": "M3 x 8",
    "螺纹": "M3",
    "长度mm": 8,
    "头型": "圆柱头内六角",
    "数量": 4,
    "位置": "P03 前置锁紧凸台(Ø10 x4) -> M1 电机前端面",
    "备注": "Ø3.2 通孔 + Ø6.0 圆柱沉孔（深 2mm），BCD 55，咬合电机前端面 3.5mm"
  },
  {
    "id": "S05",
    "规格": "M4 x 16",
    "螺纹": "M4",
    "长度mm": 16,
    "头型": "圆柱头内六角",
    "数量": 8,
    "位置": "P01 立柱分段对锁：A-B 缝 4 颗 + B-C 缝 4 颗（每缝前后各 2 颗）",
    "备注": "统一 Ø3.9 直孔自攻成型，非对称孔位防反装"
  },
  {
    "id": "S06",
    "规格": "M4 x 16",
    "螺纹": "M4",
    "长度mm": 16,
    "头型": "圆柱头内六角",
    "数量": 4,
    "位置": "P09 末端工具法兰 -> 末端工具/夹爪",
    "备注": "Ø4.4 通孔 + Ø7.0 圆柱沉孔（深 4mm，头平齐），BCD 44 均布 -> 末端工具/夹爪"
  },
  {
    "id": "S07",
    "规格": "M5 x 25",
    "螺纹": "M5",
    "长度mm": 25,
    "头型": "圆柱头内六角",
    "数量": 4,
    "位置": "P02 底座中核心 -> P01 立柱底部榫头",
    "备注": "Ø5.5 通孔 + Ø10 沉孔（深 6mm），非对称孔位防反装"
  },
  {
    "id": "S08",
    "规格": "M5 x 25",
    "螺纹": "M5",
    "长度mm": 25,
    "头型": "圆柱头内六角",
    "数量": 4,
    "位置": "P02 前/后力臂 -> 中核心：前臂 2 颗 + 后臂 2 颗",
    "备注": "Ø5.5 通孔 + Ø10 沉孔；需另配 M5 六角螺母 4 枚（嵌入螺母沉槽）"
  },
  {
    "id": "S09",
    "规格": "M4 x 16",
    "螺纹": "M4",
    "长度mm": 16,
    "头型": "圆柱头内六角",
    "数量": 4,
    "位置": "P03 肩吊臂 -> P01_C 立柱顶面（从腔体上方往下拧）",
    "备注": "统一 Ø3.9 直孔自攻成型（从上方拧入），防上抬"
  },
  {
    "id": "S11",
    "规格": "M4 x 16",
    "螺纹": "M4",
    "长度mm": 16,
    "头型": "圆柱头内六角",
    "数量": 1,
    "位置": "P01_C 立柱后壁 -> P03 榫头（横向防脱锁紧）",
    "备注": "Ø3.9 直孔贯穿 11mm 后壁 + 榫头，从后方自攻横向锁紧防脱"
  },
  {
    "id": "S10",
    "规格": "M6 x 35",
    "螺纹": "M6",
    "长度mm": 35,
    "头型": "外六角",
    "数量": 6,
    "位置": "底座 6 组 28x7 紧固腰槽 -> 工作台/桌面",
    "备注": "需另配 M6 螺母 + 平垫圈各 6（建议加弹垫防松）"
  },
  {
    "id": "S12",
    "规格": "M3 x 8",
    "螺纹": "M3",
    "长度mm": 8,
    "头型": "圆柱头内六角",
    "数量": 20,
    "位置": "P04/P05/P06/P07/P08 前端压盖 -> M2/M3/M4/M5/M6 电机前端盖（J2/J3/J4/J5/J6 各 4 颗）",
    "备注": "Ø3.4 通孔 + Ø6.0 圆柱沉孔（深 3.0mm，头全沉入），BCD 55；与后端安装板 S02 配合双向夹紧电机"
  }
]