建立方向盘项目初始版本

2026-10-29 22:04:55 +08:00
commit 9962cbfbce
834 changed files with 1519203 additions and 0 deletions
--- a/models/70_m4_drill_plain/70_M4_drill_plain.FCStd
+++ b/models/70_m4_drill_plain/70_M4_drill_plain.FCStd
--- a/models/70_m4_drill_plain/70_M4_drill_plain.png
+++ b/models/70_m4_drill_plain/70_M4_drill_plain.png
--- a/models/70_m4_drill_plain/70_M4_drill_plain.step
+++ b/models/70_m4_drill_plain/70_M4_drill_plain.step
--- a/models/70_m4_drill_plain/build_status.txt
+++ b/models/70_m4_drill_plain/build_status.txt
@@ -0,0 +1 @@
+OK
--- a/models/70_m4_drill_plain/validation.json
+++ b/models/70_m4_drill_plain/validation.json
@@ -0,0 +1,52 @@
+{
+  "fcstd_valid": true,
+  "step_valid": true,
+  "fcstd_solids": 1,
+  "step_solids": 1,
+  "step_volume": 22612.0704924005,
+  "bore_count": 24,
+  "bore_diameter_mm": 3.3,
+  "bore_full_depth_mm": 8,
+  "expected_locations_matched": true,
+  "counterbores_removed": true,
+  "source_outline_sections": [
+    {
+      "z": 0.2,
+      "source_minus_new_area": 0.0,
+      "new_minus_source_area": 0.0
+    },
+    {
+      "z": 1,
+      "source_minus_new_area": 0.0,
+      "new_minus_source_area": 0.0
+    },
+    {
+      "z": 2,
+      "source_minus_new_area": 0.0,
+      "new_minus_source_area": 0.0
+    },
+    {
+      "z": 4,
+      "source_minus_new_area": 0.0,
+      "new_minus_source_area": 0.0
+    },
+    {
+      "z": 6,
+      "source_minus_new_area": 0.0,
+      "new_minus_source_area": 0.0
+    },
+    {
+      "z": 7,
+      "source_minus_new_area": 0.0,
+      "new_minus_source_area": 0.0
+    },
+    {
+      "z": 7.8,
+      "source_minus_new_area": 0.0,
+      "new_minus_source_area": 0.0
+    }
+  ],
+  "source_reference_hidden": true,
+  "parameter_angle_test_movement_mm": 0.36651449093170674,
+  "parameter_angle_test_saved": false
+}
--- a/models/70_m4_drill_plain/validation_status.txt
+++ b/models/70_m4_drill_plain/validation_status.txt
@@ -0,0 +1 @@
+OK
--- a/models/70_m4_drill_plain/使用说明.md
+++ b/models/70_m4_drill_plain/使用说明.md
@@ -0,0 +1,10 @@
+# 70 转接盘：M4 底孔、取消沉头
+
+本版用于嘉立创 CNC 报价识别测试，独立于原盘、真实螺旋牙型版和保留沉头的底孔版。
+
+- PCD 42、48、50.8、70 四圈各六孔，共 24 孔，均改为 Ø3.3 mm、深 8 mm 的圆柱通孔，预期加工为 M4 × 0.7 右旋通牙；STEP 中是光底孔，不包含实体牙型或螺纹语义标注。
+- 原 PCD42 六孔的 Ø6.8 mm 沉头已去掉，两个表面均为普通圆孔。轴心孔 Ø32.5 mm、板厚 8 mm、各组孔位及相位、外轮廓和外缘倒角保持原设计。
+- `70_M4_drill_plain.FCStd` 是参数化模型，可通过 `Parameters` 调整四组 PCD、相位、孔径、厚度和原轮廓缩放；原始 STEP 作为隐藏参考保留。
+- `70_M4_drill_plain.step` 是单零件的报价测试文件。嘉立创能否自动识别及最终显示的孔数、螺纹规格仍需在系统中检查，切勿把识别推测视为已完成。提交前请确认 24 孔均选择 M4 × 0.7 通牙，而非普通光孔。
+- 同目录 `validation.json`：重新读取 STEP 验证 24 处 Ø3.3 圆柱、各 8 mm 贯穿，孔心符合原四组孔位；新旧未钻孔外形在 7 个高度的截面一致；重开 FCStd 及修改后不保存的参数测试通过。
+- 重建脚本：`scripts/rebuild_70_m4_drill_plain.FCMacro`，实现由 `scripts/build_70_m4_drill_plain.py` 对原始参数建模脚本进行受控修改。
--- a/models/70_m4_drill_quote/70_M4_drill.FCStd
+++ b/models/70_m4_drill_quote/70_M4_drill.FCStd
--- a/models/70_m4_drill_quote/70_M4_drill.png
+++ b/models/70_m4_drill_quote/70_M4_drill.png
--- a/models/70_m4_drill_quote/70_M4_drill.step
+++ b/models/70_m4_drill_quote/70_M4_drill.step
--- a/models/70_m4_drill_quote/status.txt
+++ b/models/70_m4_drill_quote/status.txt
@@ -0,0 +1 @@
+OK
--- a/models/70_m4_drill_quote/validation.json
+++ b/models/70_m4_drill_quote/validation.json
@@ -0,0 +1,185 @@
+{
+  "fcstd_valid": true,
+  "fcstd_solids": 1,
+  "step_valid": true,
+  "step_solids": 1,
+  "step_volume": 22483.147383878608,
+  "pilot_diameter_mm": 3.3,
+  "number_pilot_cylinders": 24,
+  "positions_and_extents": [
+    {
+      "x": -0.0,
+      "y": -35.0,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": -12.0,
+      "y": -20.78461,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": -0.0,
+      "y": -25.4,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": -30.310889,
+      "y": -17.5,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": -21.997045,
+      "y": -12.7,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 12.0,
+      "y": -20.78461,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 21.997045,
+      "y": -12.7,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 30.310889,
+      "y": -17.5,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": -24.0,
+      "y": 0.0,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": -30.310889,
+      "y": 17.5,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": -21.997045,
+      "y": 12.7,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": -12.0,
+      "y": 20.78461,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 24.0,
+      "y": 0.0,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 21.997045,
+      "y": 12.7,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 30.310889,
+      "y": 17.5,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 0.0,
+      "y": 25.4,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 12.0,
+      "y": 20.78461,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 0.0,
+      "y": 35.0,
+      "z_min": 0.0,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": -14.849242,
+      "y": -14.849242,
+      "z_min": 1.75,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 5.4352,
+      "y": -20.284442,
+      "z_min": 1.75,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 20.284442,
+      "y": -5.4352,
+      "z_min": 1.75,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": -20.284442,
+      "y": 5.4352,
+      "z_min": 1.75,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": -5.4352,
+      "y": 20.284442,
+      "z_min": 1.75,
+      "z_max": 8.0,
+      "r": 1.65
+    },
+    {
+      "x": 14.849242,
+      "y": 14.849242,
+      "z_min": 1.75,
+      "z_max": 8.0,
+      "r": 1.65
+    }
+  ],
+  "countersink_diameter_mm": 6.8,
+  "countersink_angle_deg": 90,
+  "countersink_depth_mm": 1.75,
+  "pcd42_straight_segment_mm": 6.25,
+  "other_straight_segment_mm": 8.0,
+  "interpretation": "These are smooth pilot holes, not semantic or geometric threads. Automatic quotation recognition untested."
+}
--- a/models/70_m4_drill_quote/使用说明.md
+++ b/models/70_m4_drill_quote/使用说明.md
@@ -0,0 +1,9 @@
+# 70 转接盘 M4 底孔报价测试版
+
+本文件供嘉立创 CNC 系统识别测试，四圈 PCD42、48、50.8、70 的各 6 个孔改为 **Ø3.3 mm 圆柱通孔**，其余外形、孔位、板厚 8 mm、中心孔继承原参数化模型。PCD42 六孔背面的 Ø6.8 mm、90° 沉头保留，深度调整为 1.75 mm，与 Ø3.3 孔壁相接。
+
+这些孔是**光滑的攻牙底孔**，STEP 没有螺纹实体或螺纹语义标注；设计意图是在这 24 孔加工 M4×0.7 通螺纹，但是否能被报价系统自动识别为螺纹尚未验证。上传后请逐孔检查识别规格与数量，并向加工方明确螺纹要求。
+
+沉头占用高度后，PCD42 孔的 Ø3.3 圆柱段只有 6.25 mm；其余 18 孔圆柱段为 8 mm。是否满足系统识别要求请以上传结果为准，不得声称所有孔均可自动识别。
+
+`validation.json` 包含重新打开模型和 STEP 后的实体有效性检查、24 处 Ø3.3 圆柱及其坐标和轴向范围。此版本未覆盖原模型和实体螺纹版。可用 `scripts/build_70_m4_drill.FCMacro` 重新生成。
--- a/models/70_m4_threaded/70_M4_isometric.png
+++ b/models/70_m4_threaded/70_M4_isometric.png
--- a/models/70_m4_threaded/70_M4_preview.png
+++ b/models/70_m4_threaded/70_M4_preview.png
--- a/models/70_m4_threaded/70_M4_thread_detail.png
+++ b/models/70_m4_threaded/70_M4_thread_detail.png
--- a/models/70_m4_threaded/70_M4_threaded.FCStd
+++ b/models/70_m4_threaded/70_M4_threaded.FCStd
--- a/models/70_m4_threaded/70_M4_threaded.step
+++ b/models/70_m4_threaded/70_M4_threaded.step
--- a/models/70_m4_threaded/build_status.txt
+++ b/models/70_m4_threaded/build_status.txt
@@ -0,0 +1 @@
+OK
--- a/models/70_m4_threaded/outline_check.json
+++ b/models/70_m4_threaded/outline_check.json
@@ -0,0 +1,44 @@
+[
+  {
+    "z": 0.2,
+    "symmetric_difference_area": 0.0,
+    "source_area": 3687.9966638362816,
+    "new_area": 3687.9966638362707
+  },
+  {
+    "z": 1.0,
+    "symmetric_difference_area": 0.0,
+    "source_area": 3893.523160625497,
+    "new_area": 3893.523160625502
+  },
+  {
+    "z": 2.0,
+    "symmetric_difference_area": 0.0,
+    "source_area": 3893.5231606254993,
+    "new_area": 3893.523160625501
+  },
+  {
+    "z": 4.0,
+    "symmetric_difference_area": 0.0,
+    "source_area": 3893.5231606254993,
+    "new_area": 3893.523160625501
+  },
+  {
+    "z": 6.0,
+    "symmetric_difference_area": 0.0,
+    "source_area": 3893.5231606254993,
+    "new_area": 3893.523160625501
+  },
+  {
+    "z": 7.0,
+    "symmetric_difference_area": 0.0,
+    "source_area": 3893.523160625498,
+    "new_area": 3893.523160625502
+  },
+  {
+    "z": 7.8,
+    "symmetric_difference_area": 0.0,
+    "source_area": 3687.9966638362807,
+    "new_area": 3687.996663836271
+  }
+]
--- a/models/70_m4_threaded/parameter_check.json
+++ b/models/70_m4_threaded/parameter_check.json
@@ -0,0 +1,17 @@
+{
+  "before": [
+    14.849242404917499,
+    14.849242404917499
+  ],
+  "after": [
+    14.587825779638942,
+    15.106135807111675
+  ],
+  "delta_mm": 0.36651449093170674,
+  "thread_valid": true,
+  "final_valid": true,
+  "final_state": [
+    "Up-to-date"
+  ],
+  "changes_saved": false
+}
--- a/models/70_m4_threaded/reference_check.json
+++ b/models/70_m4_threaded/reference_check.json
@@ -0,0 +1,11 @@
+{
+  "reference": [
+    {
+      "name": "Part__Feature",
+      "label": "Original STEP - reference (hidden)",
+      "visible": false,
+      "valid": true
+    }
+  ],
+  "outer_holes_min_distance_to_outline_at_z4_nominal_m4": 3.0
+}
--- a/models/70_m4_threaded/validation.json
+++ b/models/70_m4_threaded/validation.json
@@ -0,0 +1,67 @@
+{
+  "fcstd_valid": true,
+  "fcstd_solids": 1,
+  "fcstd_volume": 22164.462418185798,
+  "fcstd_faces": 1285,
+  "step_valid": true,
+  "step_solids": 1,
+  "step_volume": 22164.465148707764,
+  "step_faces": 1285,
+  "step_surface_types": {
+    "Cylinder": 299,
+    "Plane": 56,
+    "Cone": 72,
+    "BSplineSurface": 858
+  },
+  "thread_feature": {
+    "size": "M4x0.7",
+    "thread_type": "ISOMetricProfile",
+    "threaded": true,
+    "model_thread": true,
+    "depth_type": "ThroughAll",
+    "minor_diameter": 3.3219999999999996,
+    "thread_diameter": 4.0
+  },
+  "circles": 24,
+  "circle_radii": [
+    21.0,
+    21.0,
+    21.0,
+    21.0,
+    21.0,
+    21.0,
+    24.0,
+    24.0,
+    24.0,
+    24.0,
+    24.0,
+    24.0,
+    25.4,
+    25.4,
+    25.4,
+    25.4,
+    25.4,
+    25.4,
+    35.0,
+    35.0,
+    35.0,
+    35.0,
+    35.0,
+    35.0
+  ],
+  "countersink_diameter": "6.8 mm",
+  "countersink_depth": "1.7389999999999999 mm",
+  "plate_thickness": "8.0 mm",
+  "pcd_values": [
+    "42.0 mm",
+    "48.0 mm",
+    "50.8 mm",
+    "70.0 mm"
+  ],
+  "holes_profile_state": [
+    "Up-to-date"
+  ],
+  "final_state": [
+    "Up-to-date"
+  ]
+}
--- a/models/70_m4_threaded/使用说明.md
+++ b/models/70_m4_threaded/使用说明.md
@@ -0,0 +1,19 @@
+# 70 转接板 M4 螺纹版本
+
+本目录是新加工打样版本，不覆盖原始 `70转接板.step` 与 `70转接板_参数化.FCStd`。外轮廓、孔位及原板厚继承原参数化重建模型；原 STEP 仍隐藏保留在 FCStd 内供对照。
+
+- 四圈螺丝孔均为 M4×0.7 右旋通螺纹：PCD 42、48、50.8、70，各 6 孔，共 24 孔；各圈原相位不变。中心 Ø32.5 mm 保持光孔。
+- 原生 `PartDesign::Hole` 的 `Threaded` 和 `ModelThread` 已启用，FCStd 内的 `ThreadHoles` 控制四圈螺纹规格，STEP 中也包含真实螺旋曲面。`Parameters` 表格继续控制厚度、四圈 PCD、起始角、原轮廓整体缩放与倒角。
+- 原 PCD42 六孔的底面沉头保留入口 Ø6.8 mm 和 90°夹角；为了与 M4 模型螺纹底径 Ø3.322 mm 连续衔接，沉头深度从原模型约 1.283 mm 增至约 1.739 mm。`Parameters.HoleDiameter` 只作为沉头锥底的几何参考，不能用来调整螺纹规格；需要改变螺纹时应在 `ThreadHoles` 属性中修改，并同步检查沉头几何。
+- 按名义几何，PCD42 沉头外缘与 Ø32.5 中心孔之间最窄净距约 1.35 mm，供与加工方核对，不构成结构强度结论。
+- FCStd 与 STEP 重新打开后都为有效单实体，螺纹特征显示 `M4x0.7`、`Threaded=True`、`ModelThread=True`；导入 STEP 含螺旋所需的样条曲面。详见 `validation.json`。
+- 实际 CNC 螺纹精度、通规、加工底孔及沉头结合由加工方确认。孔径和旋向应按标注加工，不应把 CAD 中的 Ø3.322 mm 当成必须使用的钻头尺寸。
+
+更新脚本：`scripts/build_70_m4_threaded.py`，可用 `scripts/rebuild_70_m4_threaded.FCMacro` 重建本版本；最终文件对应单一生成版本。
+
+## 附加核验
+
+- `parameter_check.json`：临时把 PCD42 起始角从 45°改到 46°，孔中心随之移动，最终实体有效；更改未保存。
+- `reference_check.json`：原始 STEP 参考仍隐藏且有效；板中部外圈孔以 M4 名义外径计算至外轮廓最小净距约 3 mm。
+- `outline_check.json`：按原 STEP 与未开孔的外轮廓倒角特征在七个高度比较，外边界截面的对称差面积为 0；这项比较仅验证外轮廓，不代表零件强度。
+- `70_M4_isometric.png` 与 `70_M4_thread_detail.png` 分别为等轴测和螺纹局部放大图。
--- a/models/70转接板.step
+++ b/models/70转接板.step
--- a/models/70转接板_参数化.FCStd
+++ b/models/70转接板_参数化.FCStd
--- a/models/M9C12_MT6826S_几何检查.txt
+++ b/models/M9C12_MT6826S_几何检查.txt
@@ -0,0 +1,3 @@
+Concept only. Assumed dimensions are not production measurements.
+Sensor face to magnet gap: 1.0 mm.
+No positive-volume intersections above 0.001 mm3 in simplified model.
--- a/models/M9C12_MT6826S_安装示意.FCStd
+++ b/models/M9C12_MT6826S_安装示意.FCStd
--- a/models/M9C12_MT6826S_安装示意.png
+++ b/models/M9C12_MT6826S_安装示意.png
--- a/models/M9C12_MT6826S_安装示意.step
+++ b/models/M9C12_MT6826S_安装示意.step
--- a/models/M9C12_MT6826S_爆炸示意.png
+++ b/models/M9C12_MT6826S_爆炸示意.png
--- a/models/M9C12_MT6826S_示意说明.md
+++ b/models/M9C12_MT6826S_示意说明.md
@@ -0,0 +1,13 @@
+# M9C12 与 MT6826S 后置安装示意
+
+本总装用于讨论布局，不能直接作为加工或 3D 打印文件。原 `MAD_M9C12.FCStd` 未修改。
+
+- 灰色：原有近似电机模型，后端以平面为基准。
+- 橙色：随中心轴旋转的磁铁座；接触面直径按用户提供的 27 mm 表示。
+- 银色：用户已有的直径 10 mm、厚 3 mm 磁铁，以及示意螺丝。用户已确认磁铁为径向充磁。M3 螺丝头厚度为 2.2 mm，其他紧固件尺寸及贯穿长度为假设。
+- 绿色：直径 33 mm 的 MT6826S 圆形 PCB；板厚 1.6 mm 和芯片外形为占位。芯片朝向磁铁，芯片表面至磁铁表面间隙按 1 mm 示意。
+- 蓝色：固定于 PCD 50 mm 孔圈的编码器支架；孔相位和支架尺寸待实测。M4×8 螺丝仅示意，孔有效深度未确认。
+
+磁铁座厚度 7.5 mm、螺丝头直径、PCB 焊线空间和端部螺母位置均为示意，需按实物调整。示意中的磁铁压在 M3 螺丝头外侧，实际装配时须先锁紧螺丝再安装磁铁，且要解决日后可拆卸问题；螺丝和电机轴对磁场的影响须实测。现有电机模型的凸台、孔位相位等仍有原说明中的限制。厂家推荐厚度为 2.5 mm，现有 3 mm 厚磁铁是否适用需通过磁场和角度实测确定。
+
+简化几何检查未发现超过 0.001 mm³ 的正体积重叠，不代表已完成运动、受力、螺纹、走线或实物装配验证。重建宏 `scripts/rebuild_encoder_concept.FCMacro` 会覆盖本示意总装和视图文件。
--- a/models/MAD_M9C12.FCStd
+++ b/models/MAD_M9C12.FCStd
--- a/models/MAD_M9C12.step
+++ b/models/MAD_M9C12.step
@@ -0,0 +1,762 @@
+ISO-10303-21;
+HEADER;
+FILE_DESCRIPTION(('FreeCAD Model'),'2;1');
+FILE_NAME('Open CASCADE Shape Model','2026-10-28T08:32:39',(''),(''),
+  'Open CASCADE STEP processor 7.8','FreeCAD','Unknown');
+FILE_SCHEMA(('AUTOMOTIVE_DESIGN { 1 0 10303 214 1 1 1 1 }'));
+ENDSEC;
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+#736 = DIRECTION('',(1.,0.,0.));
+#737 = ( GEOMETRIC_REPRESENTATION_CONTEXT(3) 
+GLOBAL_UNCERTAINTY_ASSIGNED_CONTEXT((#741)) GLOBAL_UNIT_ASSIGNED_CONTEXT
+((#738,#739,#740)) REPRESENTATION_CONTEXT('Context #1',
+  '3D Context with UNIT and UNCERTAINTY') );
+#738 = ( LENGTH_UNIT() NAMED_UNIT(*) SI_UNIT(.MILLI.,.METRE.) );
+#739 = ( NAMED_UNIT(*) PLANE_ANGLE_UNIT() SI_UNIT($,.RADIAN.) );
+#740 = ( NAMED_UNIT(*) SI_UNIT($,.STERADIAN.) SOLID_ANGLE_UNIT() );
+#741 = UNCERTAINTY_MEASURE_WITH_UNIT(LENGTH_MEASURE(1.E-07),#738,
+  'distance_accuracy_value','confusion accuracy');
+#742 = PRODUCT_RELATED_PRODUCT_CATEGORY('part',$,(#7));
+ENDSEC;
+END-ISO-10303-21;
--- a/models/MAD_M9C12_说明.md
+++ b/models/MAD_M9C12_说明.md
@@ -0,0 +1,19 @@
+# MAD M9C12 电机近似模型
+
+`MAD_M9C12.FCStd` 是可编辑 FreeCAD 模型，`MAD_M9C12.step` 是当前参数下的交换格式快照。模型轴线为 Z 轴，后面板在 Z=0，主体正面在 Z=30 mm；电机主体直径 120 mm、厚 30 mm，均按提供的数据。前方凸台及轴为外观占位，尺寸未测；它们突出于 30 mm 主体之外。前孔从凸台顶面进入。
+
+| 项目 | 当前模型 | 数据性质 |
+| --- | --- | --- |
+| 正中心通孔 | 直径 3 mm，沿轴线贯穿主体、凸台和轴 | 按用户要求；光孔，不建螺纹 |
+| 前面板四孔 | PCD 20 mm、直径 3 mm、首孔 0°、盲孔深 5 mm | 用户确认与转接盘内圈交替四孔对应；孔径、角度、深度待测 |
+| 后面板内圈四孔 | PCD 50 mm、直径 4 mm、首孔 45° | PCD 为直尺粗测，角度待测 |
+| 后面板外圈四孔 | PCD 76 mm、直径 4 mm、首孔 45° | PCD 为直尺粗测，两圈相对角度待测 |
+| 后面板孔深 | 8 mm，盲孔 | 仅为建模占位；M4×8 无论表示 8 个 M4 孔还是 8 mm 长螺钉，都不能据此确定螺纹有效深度 |
+
+所有角度均从正 Z 方向朝原点观察，以 X 正向为 0°，向 Y 正向逆时针递增。孔采用光滑的名义直径表达，不包含螺纹、底孔直径或钻尖。两个后孔圈的 45° 相位只是可修改的假设；在确认前不能作为加工依据。
+
+厂商现行的 [M9C12 IPE V3.1 页面](https://mad-motor.com/products/mad-components-m9c12-ipe-v31waterproof-brushless-motor-drone-sprayer-framing-agriculture-longrange) 所列安装孔与此模型的后面板粗测不同，可能涉及版本差异。建议对照实物测量对角孔中心距（即四孔的 PCD）、孔径、孔圈相对角度和前后可用螺纹深度，再校核螺钉长度与装配干涉。
+
+当前假设的凸台为直径 26 mm、高 8 mm，轴为直径 8 mm、高 6 mm；转接盘中心孔为直径 15 mm、底部凹槽为直径 28 mm、深 2 mm。二者相对位置及电机实物尺寸未确定，孔位对应不代表装配间隙已验证，请实测后判断是否干涉。
+
+在 FreeCAD 中打开 `Parameters` 表修改数值，重新计算并检查模型；`CenterHoleDiameter` 控制中心通孔的直径。参数改动后，STEP 文件不会自动更新。在 FreeCAD 中选中最终 `CenterThrough` 对象后重新导出 STEP；或运行 `scripts/rebuild_mad_m9c12.FCMacro`，按脚本默认值重建并覆盖两个输出文件。修改参数后请另存模型，运行重建宏会恢复脚本默认值。
--- a/models/MAD_M9C12_预览.png
+++ b/models/MAD_M9C12_预览.png
--- a/models/all_new_corner_18_concept/Assembly_新小角码装配_概念.FCStd
+++ b/models/all_new_corner_18_concept/Assembly_新小角码装配_概念.FCStd
--- a/models/all_new_corner_18_concept/Assembly_新小角码装配_概念.step
+++ b/models/all_new_corner_18_concept/Assembly_新小角码装配_概念.step
--- a/models/all_new_corner_18_concept/完成.txt
+++ b/models/all_new_corner_18_concept/完成.txt
@@ -0,0 +1 @@
+ok
--- a/models/all_new_corner_18_concept/新小角码_长角码保留_3D.png
+++ b/models/all_new_corner_18_concept/新小角码_长角码保留_3D.png
--- a/models/all_new_corner_18_concept/新角码连接检查.json
+++ b/models/all_new_corner_18_concept/新角码连接检查.json
@@ -0,0 +1,320 @@
+{
+  "NewMotorBase0_rail": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorBase0_base": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorBase0_motor": {
+    "volume": 0.0,
+    "distance": 5.67071877
+  },
+  "NewSwitchBase0_rail": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewSwitchBase0_switch": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewBeamBase00_beam": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewBeamBase00_rail": {
+    "volume": 0,
+    "distance": 0.0
+  },
+  "Long00_beam": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Long00_plate": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Long00_bolt": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Beam0_rail0": {
+    "volume": 0,
+    "distance": 1.17005769
+  },
+  "NewBeamBase01_beam": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewBeamBase01_rail": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Long01_beam": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Long01_plate": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Long01_bolt": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Beam0_rail1": {
+    "volume": 0,
+    "distance": 1.17005769
+  },
+  "NewMotorBase1_rail": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorBase1_base": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorBase1_motor": {
+    "volume": 0.0,
+    "distance": 5.67071877
+  },
+  "NewSwitchBase1_rail": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewSwitchBase1_switch": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewBeamBase10_beam": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewBeamBase10_rail": {
+    "volume": 0,
+    "distance": 0.0
+  },
+  "Long10_beam": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Long10_plate": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Long10_bolt": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Beam1_rail0": {
+    "volume": 0,
+    "distance": 1.17005769
+  },
+  "NewBeamBase11_beam": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewBeamBase11_rail": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Long11_beam": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Long11_plate": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Long11_bolt": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "Beam1_rail1": {
+    "volume": 0,
+    "distance": 1.17005769
+  },
+  "NewMotorCorner00_motor": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorCorner00_washer": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "RailWasher00_rail": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorCorner01_motor": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorCorner01_washer": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "RailWasher01_rail": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorCorner10_motor": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorCorner10_washer": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "RailWasher10_rail": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorCorner11_motor": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorCorner11_washer": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "RailWasher11_rail": {
+    "volume": 0.0,
+    "distance": 0.0
+  },
+  "NewMotorCorner00_fan": {
+    "volume": 0.0,
+    "distance": 5.56850099
+  },
+  "NewMotorCorner00_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "NewMotorCorner01_fan": {
+    "volume": 0.0,
+    "distance": 5.56850099
+  },
+  "NewMotorCorner01_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "NewMotorCorner10_fan": {
+    "volume": 0.0,
+    "distance": 5.56850099
+  },
+  "NewMotorCorner10_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "NewMotorCorner11_fan": {
+    "volume": 0.0,
+    "distance": 5.56850099
+  },
+  "NewMotorCorner11_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "NewMotorBase0_fan": {
+    "volume": 0,
+    "distance": 20.0
+  },
+  "NewMotorBase0_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "NewMotorBase1_fan": {
+    "volume": 0,
+    "distance": 20.0
+  },
+  "NewMotorBase1_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "NewSwitchBase0_fan": {
+    "volume": 0,
+    "distance": 122.0147933
+  },
+  "NewSwitchBase0_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "NewSwitchBase1_fan": {
+    "volume": 0,
+    "distance": 122.08150885
+  },
+  "NewSwitchBase1_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "NewBeamBase00_fan": {
+    "volume": 0,
+    "distance": 85.9557594
+  },
+  "NewBeamBase00_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "NewBeamBase01_fan": {
+    "volume": 0,
+    "distance": 86.32981936
+  },
+  "NewBeamBase01_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "NewBeamBase10_fan": {
+    "volume": 0,
+    "distance": 199.30780368
+  },
+  "NewBeamBase10_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "NewBeamBase11_fan": {
+    "volume": 0,
+    "distance": 199.39721207
+  },
+  "NewBeamBase11_valid": {
+    "valid": true,
+    "solids": 1,
+    "visible": true
+  },
+  "switch_long_retained": {
+    "SwitchAngleA": true,
+    "SwitchAngleB": true
+  },
+  "bearing_long_retained": {
+    "PurchasedAngle00": true,
+    "PurchasedAngle01": true,
+    "PurchasedAngle10": true,
+    "PurchasedAngle11": true
+  },
+  "old_small_hidden": {
+    "MotorBaseCorner0": false,
+    "MotorBaseCorner1": false,
+    "SwitchCrossJoint0": false,
+    "SwitchCrossJoint1": false,
+    "BaseJoint00": false,
+    "BaseJoint01": false,
+    "BaseJoint10": false,
+    "BaseJoint11": false
+  },
+  "beam_rail_groove_y_mm": {
+    "rail": -70,
+    "beam": -70,
+    "small_angle": -70
+  },
+  "all_new_corners_visible_positive_intersections_mm3": []
+}
--- a/models/all_new_corner_18_concept/方案说明.md
+++ b/models/all_new_corner_18_concept/方案说明.md
@@ -0,0 +1,12 @@
+# 新小角码与保留长孔角码：概念装配
+
+按用户澄清，替换所有小角码，保留4只轴承固定板长孔角码和2只灯光开关长孔角码。
+
+- 12只小角码：电机76孔4只、电机2020与3030纵梁2只、轴承70横梁与3030纵梁4只、灯光开关2020横梁与纵梁2只。按20×20×16 mm、厚1.8 mm、两孔Ø5 mm建模，两个腿的圆角和孔位按对称假设；图上仅竖直腿有孔位标注，另一腿未实测。沉头及折弯圆弧、槽、滑块与螺丝未完整建模。
+- 四个电机角码与2020之间各有2 mm总厚金属垫片，共4处，角码电机侧直接贴电机。垫片示意为外径9 mm、内孔4.4 mm；不代表已确定实际规格或承载面积。2 mm 可用单片或两片1 mm，需各点等厚并检查压紧、防松与型材槽口。
+- 保留采购型材：3030 纵梁250 mm×2、3030横梁70 mm×2、电机2020 140 mm×2、开关2020横梁130 mm×1。新角码尺寸及2 mm间隔假设下，2020/3030中心距102.34 mm，3030内侧距72.34 mm，70 mm横梁每端有1.17 mm名义间隙。灯开关130 mm横梁仍跨两纵梁，端部内缩；实际T槽需试装。
+- 轴承横梁和对应长孔角码由原位置整体上移2 mm，使横梁和纵梁中心槽高度一致；轴承板、电机、轴位置不动，原板孔仍落在长孔内。四处长孔角码与对应板和横梁贴面。所有12只新小角码已置入，原先小角码已隐藏；绿为框架连接小角码，橙色为电机角码，轴承及开关的长孔角码仍保留。
+- Ø5孔选M4机牙螺栓配对应M4滑块作示意；M5公称5 mm，不应默认能穿过Ø5 mm孔。角码照片为沉头，锥角、沉头深度及螺钉头未核实；灯光开关耳孔及轴承M6固定不是本次的小角码螺丝，规格不要混淆。
+- 风扇示意按120×120×25、105 mm孔距旋转约1.43°，对角孔对准两条2020槽的假定中心。实际风扇叶片、轮毂、排线和滑块尚未建模，不能仅凭外框断定可用。
+
+FreeCAD FCStd和STEP重新打开有效；`新角码连接检查.json`核查实际新角码接触、实体交叠与保留的长孔角码。模型使用示意电机、型材实体包络、假定孔位；未模拟真实T槽、螺杆、扳手及轴向定位、载荷，不能视为最终可制造/可装配结果。角码图示竖腿8 mm、10.5 mm、整体20 mm和厚1.8 mm存在约0.3 mm标注闭合偏差，本模型电机接触腿先按内弯至孔中心10.5 mm、型材侧腿按自由端至孔中心8 mm，实际实物/卖家数据可能不同。编码器无立柱支架及金属柱仍是未定稿的示意，不提供打印文件。
--- a/models/all_new_corner_18_concept/旧误解版本_勿用/Assembly_全部新角码_概念.FCStd
+++ b/models/all_new_corner_18_concept/旧误解版本_勿用/Assembly_全部新角码_概念.FCStd
--- a/models/all_new_corner_18_concept/旧误解版本_勿用/Assembly_全部新角码_概念.step
+++ b/models/all_new_corner_18_concept/旧误解版本_勿用/Assembly_全部新角码_概念.step
--- a/models/all_new_corner_18_concept/旧误解版本_勿用/全部新角码_未完成概念.png
+++ b/models/all_new_corner_18_concept/旧误解版本_勿用/全部新角码_未完成概念.png
--- a/models/all_new_corner_18_concept/电机端_正视.png
+++ b/models/all_new_corner_18_concept/电机端_正视.png
--- a/models/all_new_corner_18_concept/角码与垫片_3D.png
+++ b/models/all_new_corner_18_concept/角码与垫片_3D.png
--- a/models/all_new_corner_18_concept/验证.json
+++ b/models/all_new_corner_18_concept/验证.json
@@ -0,0 +1,124 @@
+{
+  "all_user_lengths_mm": {
+    "3030_long": 250,
+    "3030_cross": 70,
+    "2020_motor": 140,
+    "2020_switch": 130
+  },
+  "hole_centres_76": 26.870057685088803,
+  "corner_wall_outside_x": 39.1700576850888,
+  "rail_inside_x": 41.1700576850888,
+  "washer_thickness": 2,
+  "base_joint_checks": [
+    {
+      "name": "NewBeamBase00",
+      "cross": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "base": {
+        "vol": 0.0,
+        "dist": 7.105427357601002e-15
+      }
+    },
+    {
+      "name": "NewBeamBase01",
+      "cross": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "base": {
+        "vol": 0.0,
+        "dist": 0.0
+      }
+    },
+    {
+      "name": "NewBeamBase10",
+      "cross": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "base": {
+        "vol": 0.0,
+        "dist": 7.105427357601002e-15
+      }
+    },
+    {
+      "name": "NewBeamBase11",
+      "cross": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "base": {
+        "vol": 0.0,
+        "dist": 0.0
+      }
+    }
+  ],
+  "rail_centre_x": 51.1700576850888,
+  "motor_track_centres_mm": 102.3401153701776,
+  "3030_inside_gap_mm": 72.3401153701776,
+  "70_cross_member_length_mm": 70,
+  "crossbar_intersections_mm3": [],
+  "angle_rotation_degrees": 1.4336444622115039,
+  "corner_checks": [
+    {
+      "corner": "NewMotorCorner00",
+      "motor_volume": 0.0,
+      "washer_corner": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "washer_rail": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "hex_volume": 0.0,
+      "hex_min_distance": 1.3456650221587203
+    },
+    {
+      "corner": "NewMotorCorner01",
+      "motor_volume": 0.0,
+      "washer_corner": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "washer_rail": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "hex_volume": 0.0,
+      "hex_min_distance": 1.345665022158723
+    },
+    {
+      "corner": "NewMotorCorner10",
+      "motor_volume": 0.0,
+      "washer_corner": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "washer_rail": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "hex_volume": 0.0,
+      "hex_min_distance": 1.3456650221587203
+    },
+    {
+      "corner": "NewMotorCorner11",
+      "motor_volume": 0.0,
+      "washer_corner": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "washer_rail": {
+        "vol": 0.0,
+        "dist": 0.0
+      },
+      "hex_volume": 0.0,
+      "hex_min_distance": 1.3456650221587207
+    }
+  ],
+  "fan_hits": [],
+  "note": "All 12 small angles replaced with nominal 20x20x16x1.8; 6 long-slot angles retained; real T slots, screws and fan hubs unmodelled."
+}
--- a/models/assembly_latest_standoff/Assembly.FCStd
+++ b/models/assembly_latest_standoff/Assembly.FCStd
--- a/models/assembly_latest_standoff/Assembly.step
+++ b/models/assembly_latest_standoff/Assembly.step
--- a/models/assembly_latest_standoff/完成.txt
+++ b/models/assembly_latest_standoff/完成.txt
@@ -0,0 +1 @@
+ok
--- a/models/assembly_latest_standoff/编码器背面.png
+++ b/models/assembly_latest_standoff/编码器背面.png
--- a/models/assembly_latest_standoff/装配全景.png
+++ b/models/assembly_latest_standoff/装配全景.png
--- a/models/assembly_latest_standoff/装配说明.md
+++ b/models/assembly_latest_standoff/装配说明.md
@@ -0,0 +1,9 @@
+# 当前装配：编码器铜柱版
+
+- `Assembly.FCStd` 为当前装配；`Assembly.step` 为可见零件的 STEP 导出；两张 PNG 分别为总装和电机背面局部。
+- 真实打印板 `models/encoder_standoff_plate_print/EncoderPlate.FCStd` 已装进总装，位于电机背面上方 11 mm；四根铜柱柱身长 10 mm、对边 7 mm，每柱上方各一片 1 mm 示意金属垫片。M4 公牙长度按 5 mm 示意，顶部螺丝长度同样示意，并非采购建议；电机孔深及铜柱母牙深度仍需按实物确认。
+- 保留 12 个 20 × 20 × 16 × 1.8 mm 小角码与 6 个长孔角码。电机四个角码贴紧电机，各角码与 2020 之间示意垫片总厚 2 mm。型材采用已订购规格：3030 型材 250 mm 两根、70 mm 两根；2020 型材 140 mm 两根、130 mm 一根。
+- 风扇外框和灯光开关包络为示意，灯光开关的实际固定由用户自行处理。轴套和拨片是概念件，不作为打印定稿。
+- PCB、芯片和三个 PCB 螺丝头已随实际板相对旧版一起移动 0.1 mm，PCB 与支架模型贴合且无实体相交。芯片到磁铁几何最短距离约 1.1 mm，但 PCB 厚度、芯片高度与磁铁座尺寸均为假设，非实测数据。
+- 依据当前简化几何，四个铜柱离电机固定小角码最小距离约 1.16 mm；新增支架、铜柱、垫片、示意螺丝与非配合的可见零件无正体积相交。局部螺纹配合、角码实际弯曲、线束、工具、风扇轮毂与实际加工误差并未验证。
+- `验证.json` 为数量、几何间隙和检查范围，FCStd 重开及 STEP 载入有效；不能代替实物试装或结构强度测试。
--- a/models/assembly_latest_standoff/验证.json
+++ b/models/assembly_latest_standoff/验证.json
@@ -0,0 +1,151 @@
+{
+  "counts": {
+    "NewMotorCorner": 4,
+    "NewMotorBase": 2,
+    "NewSwitchBase": 2,
+    "NewBeamBase": 4,
+    "PurchasedAngle": 4,
+    "SwitchAngle": 2,
+    "BrassStandoff": 4,
+    "StandoffShim": 4
+  },
+  "new_component_intersections_mm3": [],
+  "stand_off_to_motor_corner_clearance_mm": [
+    1.1562012763561411,
+    1.1562012763561433,
+    1.1562012763561405,
+    1.1562012763561427
+  ],
+  "panel_to_sensor_relations": {
+    "PCB": {
+      "distance_mm": 0.0,
+      "volume_mm3": 0.0
+    },
+    "Chip": {
+      "distance_mm": 7.574302487291626,
+      "volume_mm3": 0.0
+    },
+    "Magnet": {
+      "distance_mm": 6.343035550901476,
+      "volume_mm3": 0.0
+    }
+  },
+  "magnet_to_chip_shape_distance_mm": 1.0999999999999996,
+  "panel_bottom_from_motor_mm": 11,
+  "stand_off_body_mm": 10,
+  "shim_mm": 1,
+  "stud_length_mm": "5 schematic only",
+  "visible_names": [
+    "Motor",
+    "Holder",
+    "Magnet",
+    "PCB",
+    "Chip",
+    "PCBHead1",
+    "PCBHead2",
+    "PCBHead3",
+    "Rail0",
+    "Rail1",
+    "NewRail0",
+    "NewRail1",
+    "KFLHousing0",
+    "KFLInner0",
+    "KFLHousing1",
+    "KFLInner1",
+    "CamShaft",
+    "CamKey",
+    "CamUpper",
+    "CamLower",
+    "CamHardware0",
+    "CamHardware1",
+    "CamHardware2",
+    "CamHardware3",
+    "Conversion",
+    "MotorFlange",
+    "WheelHub",
+    "Wheel70",
+    "SwitchEnvelope",
+    "BearingWasherPlate00",
+    "BearingWasherEar00",
+    "BearingHead00",
+    "BearingNut00",
+    "KFLBolt0_0",
+    "BearingWasherPlate01",
+    "BearingWasherEar01",
+    "BearingHead01",
+    "BearingNut01",
+    "KFLBolt0_1",
+    "BearingWasherPlate10",
+    "BearingWasherEar10",
+    "BearingHead10",
+    "BearingNut10",
+    "KFLBolt1_0",
+    "BearingWasherPlate11",
+    "BearingWasherEar11",
+    "BearingHead11",
+    "BearingNut11",
+    "KFLBolt1_1",
+    "Crossbeam0",
+    "CompactPlate0",
+    "PurchasedAngle00",
+    "BoardM5_00",
+    "FootHead00",
+    "PurchasedAngle01",
+    "BoardM5_01",
+    "FootHead01",
+    "Crossbeam1",
+    "CompactPlate1",
+    "PurchasedAngle10",
+    "BoardM5_10",
+    "FootHead10",
+    "PurchasedAngle11",
+    "BoardM5_11",
+    "FootHead11",
+    "SwitchCross2020",
+    "SwitchAngleA",
+    "AssumedEarA",
+    "SwitchHeadA",
+    "SwitchRailHeadA",
+    "SwitchAngleB",
+    "AssumedEarB",
+    "SwitchHeadB",
+    "SwitchRailHeadB",
+    "DirectFan",
+    "FanBolt0",
+    "FanBolt1",
+    "NewMotorCorner00",
+    "RailWasher00",
+    "NewMotorM400",
+    "NewMotorCorner01",
+    "RailWasher01",
+    "NewMotorM401",
+    "NewMotorCorner10",
+    "RailWasher10",
+    "NewMotorM410",
+    "NewMotorCorner11",
+    "RailWasher11",
+    "NewMotorM411",
+    "NewMotorBase0",
+    "NewMotorBase1",
+    "NewSwitchBase0",
+    "NewSwitchBase1",
+    "NewBeamBase00",
+    "NewBeamBase01",
+    "NewBeamBase10",
+    "NewBeamBase11",
+    "FinalEncoderPlate",
+    "BrassStandoff0",
+    "StandoffShim0",
+    "EncoderScrew0",
+    "BrassStandoff1",
+    "StandoffShim1",
+    "EncoderScrew1",
+    "BrassStandoff2",
+    "StandoffShim2",
+    "EncoderScrew2",
+    "BrassStandoff3",
+    "StandoffShim3",
+    "EncoderScrew3"
+  ],
+  "limitations": "No real slot, fastener threads, countersink, switch wiring or real sensor dimensions; not physical fit or strength verification."
+}
--- a/models/conversion_disk_m4/DONE.txt
+++ b/models/conversion_disk_m4/DONE.txt
@@ -0,0 +1 @@
+ok
--- a/models/conversion_disk_m4/validation.txt
+++ b/models/conversion_disk_m4/validation.txt
@@ -0,0 +1,5 @@
+Native Hole: threaded=True modeled=True size=M4x0.7 class=6H depth_type=ThroughAll valid=True faces=377
+Final: valid=True solids=1 volume=12125.67112200 faces=385
+Outside six PCD48 masks, old minus new volume=0.000000000; new minus old=0.000000000 mm3
+Reopened FCStd: modeled=True size=M4x0.7 class=6H final_valid=True
+STEP objects=1 total_volume=12125.67135829 total_faces=385 valid=True
--- a/models/conversion_disk_m4/说明.md
+++ b/models/conversion_disk_m4/说明.md
@@ -0,0 +1,9 @@
+# 转换盘：外圈 M4 螺纹版
+
+在原有参数化转换盘的轮廓与尺寸基础上，外圈 PCD 48 mm 的 6 孔改为 M4 × 0.7、6H、右旋通孔螺纹；采用 FreeCAD 原生 PartDesign Hole 的实体螺纹（`ModelThread=True`），STEP 亦包含螺旋几何。
+
+原厚度 8 mm、外圈起始角 30°、中心 Ø15 mm、内圈 PCD 20 mm 的 8 个 Ø3 mm 通孔及背面 Ø28 × 2 mm 凹腔保持原样，孔位与轮廓由原参数化模型继承。原始模型和 STEP 没有覆盖。
+
+`OuterHole` 草图直径只用于六处孔的定位示意，实际螺纹的规格由 `OuterM4Thread` 孔特征的 `ThreadSize` 与 `ThreadClass` 控制，数值为 M4×0.7、6H；更改螺纹规格时应修改孔特征，不应仅修改草图圆直径。
+
+本文件用于新的加工打样；原盘模型外圈原为约 Ø4.234 mm 通孔，不能直接把该孔视为可攻 M4 的正常底孔。加工时需让厂家以螺纹规格加工并检验，实际材质、精度及配合需要厂家确认。螺纹几何、轮廓和 STEP 复核见 `validation.txt`，不代表装配、螺纹强度或实体试制已经验证。
--- a/models/conversion_disk_m4/转换盘_M4.FCStd
+++ b/models/conversion_disk_m4/转换盘_M4.FCStd
--- a/models/conversion_disk_m4/转换盘_M4.step
+++ b/models/conversion_disk_m4/转换盘_M4.step
--- a/models/conversion_disk_m4/转换盘_M4预览.png
+++ b/models/conversion_disk_m4/转换盘_M4预览.png
--- a/models/conversion_disk_m4_drill/DONE.txt
+++ b/models/conversion_disk_m4_drill/DONE.txt
@@ -0,0 +1 @@
+ok
--- a/models/conversion_disk_m4_drill/validation.txt
+++ b/models/conversion_disk_m4_drill/validation.txt
@@ -0,0 +1,4 @@
+FCStd: six Ø3.3 full-depth PCD48 holes, phase 30°, coordinates=[(-1.2434497875801753e-14, -24.000000000000004), (-20.784609690826528, -11.999999999999996), (20.784609690826528, -12.0), (-20.78460969082652, 12.000000000000004), (20.784609690826528, 11.999999999999998), (5.329070518200751e-15, 24.0)]
+Outside hole masks differences: old-new=0.000000000 new-old=0.000000000 mm³
+FCStd reopened and recomputed: valid
+STEP reopened: valid, six Ø3.3 through bores, volume=12203.58885761, error=0.000000000
--- a/models/conversion_disk_m4_drill/说明.md
+++ b/models/conversion_disk_m4_drill/说明.md
@@ -0,0 +1,7 @@
+# 转换盘 M4 底孔报价识别测试版
+
+外圈 PCD48 的六孔建为 **Ø3.3 mm 圆柱通孔**（M4 × 0.7 常用攻牙底孔），其余孔位、轮廓、板厚与原参数化模型保持一致。
+
+该文件仅供报价系统识别底孔测试，**模型没有螺旋牙型，也不包含 M4 螺纹标注或线程语义**；若实际要求攻 M4 × 0.7，必须在厂家报价及加工要求里单独明确，不能认为上传这个文件就自动包含螺纹加工。具体底孔由厂家按材料及工艺确定。
+
+保留的实体螺纹模型在 `models/conversion_disk_m4`，原始转换盘模型也未覆盖。`validation.txt` 记录重开、孔径、孔数量和轮廓差异检查。
--- a/models/conversion_disk_m4_drill/转换盘_M4底孔.FCStd
+++ b/models/conversion_disk_m4_drill/转换盘_M4底孔.FCStd
--- a/models/conversion_disk_m4_drill/转换盘_M4底孔.step
+++ b/models/conversion_disk_m4_drill/转换盘_M4底孔.step
--- a/models/conversion_disk_m4_drill/转换盘_M4底孔预览.png
+++ b/models/conversion_disk_m4_drill/转换盘_M4底孔预览.png
--- a/models/conversion_disk_parametric.FCStd
+++ b/models/conversion_disk_parametric.FCStd
--- a/models/encoder_print_v1/BUILD_OK.txt
+++ b/models/encoder_print_v1/BUILD_OK.txt
@@ -0,0 +1 @@
+success
--- a/models/encoder_print_v1/EncoderAssembly_Fit.FCStd
+++ b/models/encoder_print_v1/EncoderAssembly_Fit.FCStd
--- a/models/encoder_print_v1/EncoderBracket.step
+++ b/models/encoder_print_v1/EncoderBracket.step
--- a/models/encoder_print_v1/EncoderBracket.stl
+++ b/models/encoder_print_v1/EncoderBracket.stl
--- a/models/encoder_print_v1/EncoderParts_Print.FCStd
+++ b/models/encoder_print_v1/EncoderParts_Print.FCStd
--- a/models/encoder_print_v1/MagnetHolder.step
+++ b/models/encoder_print_v1/MagnetHolder.step
@@ -0,0 +1,391 @@
+ISO-10303-21;
+HEADER;
+FILE_DESCRIPTION(('FreeCAD Model'),'2;1');
+FILE_NAME('Open CASCADE Shape Model','2026-10-28T09:26:54',(''),(''),
+  'Open CASCADE STEP processor 7.8','FreeCAD','Unknown');
+FILE_SCHEMA(('AUTOMOTIVE_DESIGN { 1 0 10303 214 1 1 1 1 }'));
+ENDSEC;
+DATA;
+#1 = APPLICATION_PROTOCOL_DEFINITION('international standard',
+  'automotive_design',2000,#2);
+#2 = APPLICATION_CONTEXT(
+  'core data for automotive mechanical design processes');
+#3 = SHAPE_DEFINITION_REPRESENTATION(#4,#10);
+#4 = PRODUCT_DEFINITION_SHAPE('','',#5);
+#5 = PRODUCT_DEFINITION('design','',#6,#9);
+#6 = PRODUCT_DEFINITION_FORMATION('','',#7);
+#7 = PRODUCT('Magnet holder - print motor face down',
+  'Magnet holder - print motor face down','',(#8));
+#8 = PRODUCT_CONTEXT('',#2,'mechanical');
+#9 = PRODUCT_DEFINITION_CONTEXT('part definition',#2,'design');
+#10 = ADVANCED_BREP_SHAPE_REPRESENTATION('',(#11,#15),#368);
+#11 = AXIS2_PLACEMENT_3D('',#12,#13,#14);
+#12 = CARTESIAN_POINT('',(0.,0.,0.));
+#13 = DIRECTION('',(0.,0.,1.));
+#14 = DIRECTION('',(1.,0.,-0.));
+#15 = MANIFOLD_SOLID_BREP('',#16);
+#16 = CLOSED_SHELL('',(#17,#50,#70,#90,#149,#174,#206,#230,#265,#282,
+    #302,#331,#356));
+#17 = ADVANCED_FACE('',(#18),#45,.T.);
+#18 = FACE_BOUND('',#19,.T.);
+#19 = EDGE_LOOP('',(#20,#29,#37,#44));
+#20 = ORIENTED_EDGE('',*,*,#21,.F.);
+#21 = EDGE_CURVE('',#22,#22,#24,.T.);
+#22 = VERTEX_POINT('',#23);
+#23 = CARTESIAN_POINT('',(13.5,-3.306546357698E-15,3.));
+#24 = CIRCLE('',#25,13.5);
+#25 = AXIS2_PLACEMENT_3D('',#26,#27,#28);
+#26 = CARTESIAN_POINT('',(0.,0.,3.));
+#27 = DIRECTION('',(0.,0.,1.));
+#28 = DIRECTION('',(1.,0.,-0.));
+#29 = ORIENTED_EDGE('',*,*,#30,.F.);
+#30 = EDGE_CURVE('',#31,#22,#33,.T.);
+#31 = VERTEX_POINT('',#32);
+#32 = CARTESIAN_POINT('',(13.5,-3.306546357698E-15,0.));
+#33 = LINE('',#34,#35);
+#34 = CARTESIAN_POINT('',(13.5,-3.306546357698E-15,0.));
+#35 = VECTOR('',#36,1.);
+#36 = DIRECTION('',(0.,0.,1.));
+#37 = ORIENTED_EDGE('',*,*,#38,.T.);
+#38 = EDGE_CURVE('',#31,#31,#39,.T.);
+#39 = CIRCLE('',#40,13.5);
+#40 = AXIS2_PLACEMENT_3D('',#41,#42,#43);
+#41 = CARTESIAN_POINT('',(0.,0.,0.));
+#42 = DIRECTION('',(0.,0.,1.));
+#43 = DIRECTION('',(1.,0.,-0.));
+#44 = ORIENTED_EDGE('',*,*,#30,.T.);
+#45 = CYLINDRICAL_SURFACE('',#46,13.5);
+#46 = AXIS2_PLACEMENT_3D('',#47,#48,#49);
+#47 = CARTESIAN_POINT('',(0.,0.,0.));
+#48 = DIRECTION('',(0.,0.,1.));
+#49 = DIRECTION('',(1.,0.,-0.));
+#50 = ADVANCED_FACE('',(#51,#54),#65,.T.);
+#51 = FACE_BOUND('',#52,.T.);
+#52 = EDGE_LOOP('',(#53));
+#53 = ORIENTED_EDGE('',*,*,#21,.T.);
+#54 = FACE_BOUND('',#55,.T.);
+#55 = EDGE_LOOP('',(#56));
+#56 = ORIENTED_EDGE('',*,*,#57,.F.);
+#57 = EDGE_CURVE('',#58,#58,#60,.T.);
+#58 = VERTEX_POINT('',#59);
+#59 = CARTESIAN_POINT('',(10.,-2.449293598295E-15,3.));
+#60 = CIRCLE('',#61,10.);
+#61 = AXIS2_PLACEMENT_3D('',#62,#63,#64);
+#62 = CARTESIAN_POINT('',(0.,0.,3.));
+#63 = DIRECTION('',(0.,0.,1.));
+#64 = DIRECTION('',(1.,0.,-0.));
+#65 = PLANE('',#66);
+#66 = AXIS2_PLACEMENT_3D('',#67,#68,#69);
+#67 = CARTESIAN_POINT('',(0.,0.,3.));
+#68 = DIRECTION('',(0.,0.,1.));
+#69 = DIRECTION('',(1.,0.,-0.));
+#70 = ADVANCED_FACE('',(#71,#74),#85,.F.);
+#71 = FACE_BOUND('',#72,.F.);
+#72 = EDGE_LOOP('',(#73));
+#73 = ORIENTED_EDGE('',*,*,#38,.T.);
+#74 = FACE_BOUND('',#75,.F.);
+#75 = EDGE_LOOP('',(#76));
+#76 = ORIENTED_EDGE('',*,*,#77,.F.);
+#77 = EDGE_CURVE('',#78,#78,#80,.T.);
+#78 = VERTEX_POINT('',#79);
+#79 = CARTESIAN_POINT('',(1.65,-4.041334437186E-16,0.));
+#80 = CIRCLE('',#81,1.65);
+#81 = AXIS2_PLACEMENT_3D('',#82,#83,#84);
+#82 = CARTESIAN_POINT('',(0.,0.,0.));
+#83 = DIRECTION('',(0.,0.,1.));
+#84 = DIRECTION('',(1.,0.,-0.));
+#85 = PLANE('',#86);
+#86 = AXIS2_PLACEMENT_3D('',#87,#88,#89);
+#87 = CARTESIAN_POINT('',(0.,0.,0.));
+#88 = DIRECTION('',(0.,0.,1.));
+#89 = DIRECTION('',(1.,0.,-0.));
+#90 = ADVANCED_FACE('',(#91),#144,.T.);
+#91 = FACE_BOUND('',#92,.T.);
+#92 = EDGE_LOOP('',(#93,#104,#112,#121,#127,#128,#129,#138));
+#93 = ORIENTED_EDGE('',*,*,#94,.F.);
+#94 = EDGE_CURVE('',#95,#97,#99,.T.);
+#95 = VERTEX_POINT('',#96);
+#96 = CARTESIAN_POINT('',(9.921567416492,1.25,7.5));
+#97 = VERTEX_POINT('',#98);
+#98 = CARTESIAN_POINT('',(9.921567416492,-1.25,7.5));
+#99 = CIRCLE('',#100,10.);
+#100 = AXIS2_PLACEMENT_3D('',#101,#102,#103);
+#101 = CARTESIAN_POINT('',(0.,0.,7.5));
+#102 = DIRECTION('',(0.,0.,1.));
+#103 = DIRECTION('',(1.,0.,-0.));
+#104 = ORIENTED_EDGE('',*,*,#105,.F.);
+#105 = EDGE_CURVE('',#106,#95,#108,.T.);
+#106 = VERTEX_POINT('',#107);
+#107 = CARTESIAN_POINT('',(9.921567416492,1.25,5.1));
+#108 = LINE('',#109,#110);
+#109 = CARTESIAN_POINT('',(9.921567416492,1.25,3.));
+#110 = VECTOR('',#111,1.);
+#111 = DIRECTION('',(0.,0.,1.));
+#112 = ORIENTED_EDGE('',*,*,#113,.F.);
+#113 = EDGE_CURVE('',#114,#106,#116,.T.);
+#114 = VERTEX_POINT('',#115);
+#115 = CARTESIAN_POINT('',(10.,-2.449293598295E-15,5.1));
+#116 = CIRCLE('',#117,10.);
+#117 = AXIS2_PLACEMENT_3D('',#118,#119,#120);
+#118 = CARTESIAN_POINT('',(0.,0.,5.1));
+#119 = DIRECTION('',(0.,0.,1.));
+#120 = DIRECTION('',(1.,0.,-0.));
+#121 = ORIENTED_EDGE('',*,*,#122,.F.);
+#122 = EDGE_CURVE('',#58,#114,#123,.T.);
+#123 = LINE('',#124,#125);
+#124 = CARTESIAN_POINT('',(10.,-2.449293598295E-15,3.));
+#125 = VECTOR('',#126,1.);
+#126 = DIRECTION('',(0.,0.,1.));
+#127 = ORIENTED_EDGE('',*,*,#57,.T.);
+#128 = ORIENTED_EDGE('',*,*,#122,.T.);
+#129 = ORIENTED_EDGE('',*,*,#130,.F.);
+#130 = EDGE_CURVE('',#131,#114,#133,.T.);
+#131 = VERTEX_POINT('',#132);
+#132 = CARTESIAN_POINT('',(9.921567416492,-1.25,5.1));
+#133 = CIRCLE('',#134,10.);
+#134 = AXIS2_PLACEMENT_3D('',#135,#136,#137);
+#135 = CARTESIAN_POINT('',(0.,0.,5.1));
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--- a/models/encoder_print_v1/Shim05.stl
+++ b/models/encoder_print_v1/Shim05.stl
--- a/models/encoder_print_v1/Shim10.step
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+#15 = MANIFOLD_SOLID_BREP('',#16);
+#16 = CLOSED_SHELL('',(#17,#50,#70,#90));
+#17 = ADVANCED_FACE('',(#18),#45,.T.);
+#18 = FACE_BOUND('',#19,.T.);
+#19 = EDGE_LOOP('',(#20,#29,#37,#44));
+#20 = ORIENTED_EDGE('',*,*,#21,.F.);
+#21 = EDGE_CURVE('',#22,#22,#24,.T.);
+#22 = VERTEX_POINT('',#23);
+#23 = CARTESIAN_POINT('',(4.5,-1.102182119233E-15,1.));
+#24 = CIRCLE('',#25,4.5);
+#25 = AXIS2_PLACEMENT_3D('',#26,#27,#28);
+#26 = CARTESIAN_POINT('',(0.,0.,1.));
+#27 = DIRECTION('',(0.,0.,1.));
+#28 = DIRECTION('',(1.,0.,-0.));
+#29 = ORIENTED_EDGE('',*,*,#30,.F.);
+#30 = EDGE_CURVE('',#31,#22,#33,.T.);
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+#32 = CARTESIAN_POINT('',(4.5,-1.102182119233E-15,0.));
+#33 = LINE('',#34,#35);
+#34 = CARTESIAN_POINT('',(4.5,-1.102182119233E-15,0.));
+#35 = VECTOR('',#36,1.);
+#36 = DIRECTION('',(0.,0.,1.));
+#37 = ORIENTED_EDGE('',*,*,#38,.T.);
+#38 = EDGE_CURVE('',#31,#31,#39,.T.);
+#39 = CIRCLE('',#40,4.5);
+#40 = AXIS2_PLACEMENT_3D('',#41,#42,#43);
+#41 = CARTESIAN_POINT('',(0.,0.,0.));
+#42 = DIRECTION('',(0.,0.,1.));
+#43 = DIRECTION('',(1.,0.,-0.));
+#44 = ORIENTED_EDGE('',*,*,#30,.T.);
+#45 = CYLINDRICAL_SURFACE('',#46,4.5);
+#46 = AXIS2_PLACEMENT_3D('',#47,#48,#49);
+#47 = CARTESIAN_POINT('',(0.,0.,0.));
+#48 = DIRECTION('',(0.,0.,1.));
+#49 = DIRECTION('',(1.,0.,-0.));
+#50 = ADVANCED_FACE('',(#51,#54),#65,.T.);
+#51 = FACE_BOUND('',#52,.T.);
+#52 = EDGE_LOOP('',(#53));
+#53 = ORIENTED_EDGE('',*,*,#21,.T.);
+#54 = FACE_BOUND('',#55,.T.);
+#55 = EDGE_LOOP('',(#56));
+#56 = ORIENTED_EDGE('',*,*,#57,.F.);
+#57 = EDGE_CURVE('',#58,#58,#60,.T.);
+#58 = VERTEX_POINT('',#59);
+#59 = CARTESIAN_POINT('',(2.2,-5.388445916248E-16,1.));
+#60 = CIRCLE('',#61,2.2);
+#61 = AXIS2_PLACEMENT_3D('',#62,#63,#64);
+#62 = CARTESIAN_POINT('',(0.,0.,1.));
+#63 = DIRECTION('',(0.,0.,1.));
+#64 = DIRECTION('',(1.,0.,-0.));
+#65 = PLANE('',#66);
+#66 = AXIS2_PLACEMENT_3D('',#67,#68,#69);
+#67 = CARTESIAN_POINT('',(0.,0.,1.));
+#68 = DIRECTION('',(0.,0.,1.));
+#69 = DIRECTION('',(1.,0.,-0.));
+#70 = ADVANCED_FACE('',(#71,#74),#85,.F.);
+#71 = FACE_BOUND('',#72,.F.);
+#72 = EDGE_LOOP('',(#73));
+#73 = ORIENTED_EDGE('',*,*,#38,.T.);
+#74 = FACE_BOUND('',#75,.F.);
+#75 = EDGE_LOOP('',(#76));
+#76 = ORIENTED_EDGE('',*,*,#77,.F.);
+#77 = EDGE_CURVE('',#78,#78,#80,.T.);
+#78 = VERTEX_POINT('',#79);
+#79 = CARTESIAN_POINT('',(2.2,-5.388445916248E-16,0.));
+#80 = CIRCLE('',#81,2.2);
+#81 = AXIS2_PLACEMENT_3D('',#82,#83,#84);
+#82 = CARTESIAN_POINT('',(0.,0.,0.));
+#83 = DIRECTION('',(0.,0.,1.));
+#84 = DIRECTION('',(1.,0.,-0.));
+#85 = PLANE('',#86);
+#86 = AXIS2_PLACEMENT_3D('',#87,#88,#89);
+#87 = CARTESIAN_POINT('',(0.,0.,0.));
+#88 = DIRECTION('',(0.,0.,1.));
+#89 = DIRECTION('',(1.,0.,-0.));
+#90 = ADVANCED_FACE('',(#91),#102,.F.);
+#91 = FACE_BOUND('',#92,.F.);
+#92 = EDGE_LOOP('',(#93,#94,#100,#101));
+#93 = ORIENTED_EDGE('',*,*,#57,.F.);
+#94 = ORIENTED_EDGE('',*,*,#95,.F.);
+#95 = EDGE_CURVE('',#78,#58,#96,.T.);
+#96 = LINE('',#97,#98);
+#97 = CARTESIAN_POINT('',(2.2,-5.388445916248E-16,-1.E-02));
+#98 = VECTOR('',#99,1.);
+#99 = DIRECTION('',(0.,0.,1.));
+#100 = ORIENTED_EDGE('',*,*,#77,.T.);
+#101 = ORIENTED_EDGE('',*,*,#95,.T.);
+#102 = CYLINDRICAL_SURFACE('',#103,2.2);
+#103 = AXIS2_PLACEMENT_3D('',#104,#105,#106);
+#104 = CARTESIAN_POINT('',(0.,0.,-1.E-02));
+#105 = DIRECTION('',(0.,0.,1.));
+#106 = DIRECTION('',(1.,0.,-0.));
+#107 = ( GEOMETRIC_REPRESENTATION_CONTEXT(3) 
+GLOBAL_UNCERTAINTY_ASSIGNED_CONTEXT((#111)) GLOBAL_UNIT_ASSIGNED_CONTEXT
+((#108,#109,#110)) REPRESENTATION_CONTEXT('Context #1',
+  '3D Context with UNIT and UNCERTAINTY') );
+#108 = ( LENGTH_UNIT() NAMED_UNIT(*) SI_UNIT(.MILLI.,.METRE.) );
+#109 = ( NAMED_UNIT(*) PLANE_ANGLE_UNIT() SI_UNIT($,.RADIAN.) );
+#110 = ( NAMED_UNIT(*) SI_UNIT($,.STERADIAN.) SOLID_ANGLE_UNIT() );
+#111 = UNCERTAINTY_MEASURE_WITH_UNIT(LENGTH_MEASURE(1.E-07),#108,
+  'distance_accuracy_value','confusion accuracy');
+#112 = PRODUCT_RELATED_PRODUCT_CATEGORY('part',$,(#7));
+ENDSEC;
+END-ISO-10303-21;
--- a/models/encoder_print_v1/Shim10.stl
+++ b/models/encoder_print_v1/Shim10.stl
--- a/models/encoder_print_v1/assembly.png
+++ b/models/encoder_print_v1/assembly.png
--- a/models/encoder_print_v1/geometry_check.txt
+++ b/models/encoder_print_v1/geometry_check.txt
@@ -0,0 +1,9 @@
+magnet_holder 0.000000 mm3
+holder_bracket 0.000000 mm3
+magnet_bracket 0.000000 mm3
+chip_magnet 0.000000 mm3
+board_bracket 0.000000 mm3
+holder_M2head_1 0.000000 mm3
+holder_M2head_2 0.000000 mm3
+holder_M2head_3 0.000000 mm3
+Nominal chip-face-to-magnet-face gap: 1 mm
--- a/models/encoder_print_v1/mesh_check.txt
+++ b/models/encoder_print_v1/mesh_check.txt
@@ -0,0 +1,4 @@
+MagnetHolder solid=True facets=612 volume=2717.41382 ZMin=0.00000 ZMax=7.50000
+EncoderBracket solid=True facets=9628 volume=2575.82349 ZMin=-0.00000 ZMax=13.60000
+Shim05 solid=True facets=260 volume=24.12965 ZMin=0.00000 ZMax=0.50000
+Shim10 solid=True facets=260 volume=48.25929 ZMin=0.00000 ZMax=1.00000
--- a/models/encoder_print_v1/打印与装配说明.md
+++ b/models/encoder_print_v1/打印与装配说明.md
@@ -0,0 +1,41 @@
+# MT6826S 后置编码器：首版打印与装配
+
+这是根据现有近似电机模型和圆板图制作的首版试装件。PCB 实际厚度、芯片突出高度、中心螺丝头直径及电机孔相位/孔深未实测，必须先试装，不能保证一次装配成功。
+
+## 文件与打印数量
+
+| STL | 用途 | 数量 |
+| --- | --- | --- |
+| `MagnetHolder.stl` | 磁铁座，电机轴平面侧向下打印 | 1 |
+| `EncoderBracket.stl` | 编码器支架，PCB 托环平面向下打印 | 1 |
+| `Shim05.stl` | 0.5 mm M4 间隙垫片 | 4 片或更多 |
+| `Shim10.stl` | 1 mm M4 间隙垫片 | 4 片或更多 |
+
+STL 已调整到上述朝向，最低 Z 为 0。`EncoderParts_Print.FCStd` 是打印摆向零件文件，零件在同一坐标原点；按模型树分别选择对象导出。`EncoderAssembly_Fit.FCStd` 是 0.5 mm 垫片装配示意，原有电机模型未修改。各零件单独的 STEP 也可使用。可通过 `scripts/build_encoder_print_parts.py` 修改参数/重建；这些 FreeCAD 对象为实体特征，不是可直接在尺寸表内更改的参数化零件。
+
+打印建议 PETG 等耐温材料、主件 0.2 mm 层高，至少 3 道外墙。支架倒置打印时四个 M4 耳在空中悬挑：切片中开启**从平台生成的支撑**，查看预览确保耳下可打印，打印后仔细移除支撑。0.5 mm 垫片可使用 0.1 mm 层高，使目标厚度对应整数层，并在切片预览中核对实际层数；垫片薄，留意实际厚度和翘曲。如果不易打印，可以使用相同厚度的 M4 非磁性平垫片。磁铁座槽口尺寸为 Ø10.3 mm，为 FDM 试配余量而不是保证的紧配合；打印机精度不同需要试配，磁铁应有可靠防脱固定，待验证后再固定。
+
+## 规格和装配
+
+- 磁铁座底面 Ø27×3 mm，上层 Ø20 mm，总高 7.5 mm；中心为 Ø3.3 mm M3 螺丝通孔。沉孔按螺丝头厚 2.2 mm、假设头直径不大于 7.2 mm 留余量，超过须修改模型。磁铁为 Ø10×3 mm 径向充磁，槽深 3 mm，侧边缺口供撬取。先插 M3 螺丝并装上另一端螺母锁紧，再放磁铁；两侧紧固和磁铁取出能否操作还需按实物确认。
+- PCB 直径按 33 mm，3 个 Ø3 mm 孔中心按图片；PCB 厚按 1.6 mm，芯片突出按 0.8 mm。支架用三个局部支承柱，以便在板背部留焊线空间；由于具体背部元件和焊盘未知，先试放并检查是否压住焊点或电线。
+- PCB 先在拆下的支架上固定，再将整个支架装到电机上。建议 **3 颗 M2×4 mm 小自攻螺丝**从芯片面穿过 PCB 原孔拧入打印支承柱的 Ø1.8 mm 导孔；螺丝头假设 Ø4 mm、高不超过 1.5 mm，且要覆盖 Ø3 mm 板孔。螺丝先轻拧，利用 M2 螺杆与 PCB 孔约 0.5 mm 的径向余量微调芯片中心，确认后轻轻锁紧，避免挤裂 PCB 和打印孔。实际螺钉形状、固位和布线需要试配；自攻孔太紧可轻微修孔，先勿强拧。
+- 支架用四颗 M4×8 固定，足部厚 2 mm。柱侧空间按 M4 螺丝头 Ø7 mm 计算，理论单侧间隙约 0.7 mm；请先试装螺丝和螺丝刀，较大螺丝头可能无法安装。50 mm 孔圈起始相位 45° 为原模型假设，不能保证与实物孔位一致。
+- 把磁铁座、支架分别固定在随转子转动的中心轴和电机固定部分。中心孔只有 M3 螺丝，磁铁座不会自动保证同轴；磁铁中心需对准芯片中心，并断电手动慢转数圈，检查没有蹭碰和轴向跳动。
+
+## 怎样调整间隙
+
+在**四个 M4 支架脚与电机平面之间**放完全相同厚度的垫片，避免 PCB 倾斜。增加垫片会把支架、PCB 和芯片一起向后移，使磁铁表面到芯片表面的间隙增大；减少垫片则减小间隙。按 PCB 厚 1.6 mm、芯片高 0.8 mm 的占位计算：
+
+| 每个脚下垫片 | 计算间隙，仅为模型值 | M4×8 理论进入电机的长度 |
+| --- | --- | --- |
+| 无 | 0.5 mm | 6 mm |
+| 0.5 mm | 1.0 mm | 5.5 mm |
+| 1.0 mm | 1.5 mm | 5 mm |
+| 1.0 + 0.5 mm | 2.0 mm | 4.5 mm |
+
+M4 进入长度按 `8 - 支架脚厚 2 - 垫片厚` 计算，未计电机端孔口形状。电机有效螺纹深度和所需咬合长度未确认，必须检查螺丝不会顶底、且有足够咬合；如果垫片较厚导致固定不牢，可换更长螺丝，但应先核对有效孔深。
+
+首次建议每脚放一片 1.0 mm 垫片，从较大间隙开始，断电转动检查无碰擦后读取编码器角度及磁场状态；如需缩小间隙，再每脚统一改为 0.5 mm。上表是设计计算，不是实测；传感器表面与磁铁的真实间隙、磁铁同轴度和角度读数需现场确认。金属 M3 螺钉及电机轴可能影响磁场，实测不理想时再调整结构或紧固件。
+
+`mesh_check.txt` 为重新加载 STL 后的 FreeCAD 网格闭合、体积和 Z 范围检查；`geometry_check.txt` 为简化示意装配的干涉检查。未做实物试装、电气、温升或旋转载荷测试。
--- a/models/encoder_shared76_print_v1/DONE.txt
+++ b/models/encoder_shared76_print_v1/DONE.txt
@@ -0,0 +1 @@
+ok
--- a/models/encoder_shared76_print_v1/EncoderBracket.step
+++ b/models/encoder_shared76_print_v1/EncoderBracket.step
--- a/models/encoder_shared76_print_v1/EncoderBracket.stl
+++ b/models/encoder_shared76_print_v1/EncoderBracket.stl
--- a/models/encoder_shared76_print_v1/Shared76_Assembly.FCStd
+++ b/models/encoder_shared76_print_v1/Shared76_Assembly.FCStd
--- a/models/encoder_shared76_print_v1/Shared76_Assembly.step
+++ b/models/encoder_shared76_print_v1/Shared76_Assembly.step
--- a/models/encoder_shared76_print_v1/Shared76_Print.FCStd
+++ b/models/encoder_shared76_print_v1/Shared76_Print.FCStd
--- a/models/encoder_shared76_print_v1/Shim05.step
+++ b/models/encoder_shared76_print_v1/Shim05.step
@@ -0,0 +1,128 @@
+ISO-10303-21;
+HEADER;
+FILE_DESCRIPTION(('FreeCAD Model'),'2;1');
+FILE_NAME('Open CASCADE Shape Model','2026-10-28T10:41:16',(''),(''),
+  'Open CASCADE STEP processor 7.8','FreeCAD','Unknown');
+FILE_SCHEMA(('AUTOMOTIVE_DESIGN { 1 0 10303 214 1 1 1 1 }'));
+ENDSEC;
+DATA;
+#1 = APPLICATION_PROTOCOL_DEFINITION('international standard',
+  'automotive_design',2000,#2);
+#2 = APPLICATION_CONTEXT(
+  'core data for automotive mechanical design processes');
+#3 = SHAPE_DEFINITION_REPRESENTATION(#4,#10);
+#4 = PRODUCT_DEFINITION_SHAPE('','',#5);
+#5 = PRODUCT_DEFINITION('design','',#6,#9);
+#6 = PRODUCT_DEFINITION_FORMATION('','',#7);
+#7 = PRODUCT('M4 shim 0.5mm','M4 shim 0.5mm','',(#8));
+#8 = PRODUCT_CONTEXT('',#2,'mechanical');
+#9 = PRODUCT_DEFINITION_CONTEXT('part definition',#2,'design');
+#10 = ADVANCED_BREP_SHAPE_REPRESENTATION('',(#11,#15),#107);
+#11 = AXIS2_PLACEMENT_3D('',#12,#13,#14);
+#12 = CARTESIAN_POINT('',(0.,0.,0.));
+#13 = DIRECTION('',(0.,0.,1.));
+#14 = DIRECTION('',(1.,0.,-0.));
+#15 = MANIFOLD_SOLID_BREP('',#16);
+#16 = CLOSED_SHELL('',(#17,#50,#70,#90));
+#17 = ADVANCED_FACE('',(#18),#45,.T.);
+#18 = FACE_BOUND('',#19,.T.);
+#19 = EDGE_LOOP('',(#20,#29,#37,#44));
+#20 = ORIENTED_EDGE('',*,*,#21,.F.);
+#21 = EDGE_CURVE('',#22,#22,#24,.T.);
+#22 = VERTEX_POINT('',#23);
+#23 = CARTESIAN_POINT('',(4.5,-1.102182119233E-15,0.5));
+#24 = CIRCLE('',#25,4.5);
+#25 = AXIS2_PLACEMENT_3D('',#26,#27,#28);
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+#27 = DIRECTION('',(0.,0.,1.));
+#28 = DIRECTION('',(1.,0.,-0.));
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+#108 = ( LENGTH_UNIT() NAMED_UNIT(*) SI_UNIT(.MILLI.,.METRE.) );
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+  'distance_accuracy_value','confusion accuracy');
+#112 = PRODUCT_RELATED_PRODUCT_CATEGORY('part',$,(#7));
+ENDSEC;
+END-ISO-10303-21;
--- a/models/encoder_shared76_print_v1/Shim05.stl
+++ b/models/encoder_shared76_print_v1/Shim05.stl
--- a/models/encoder_shared76_print_v1/Shim10.step
+++ b/models/encoder_shared76_print_v1/Shim10.step
@@ -0,0 +1,128 @@
+ISO-10303-21;
+HEADER;
+FILE_DESCRIPTION(('FreeCAD Model'),'2;1');
+FILE_NAME('Open CASCADE Shape Model','2026-10-28T10:41:16',(''),(''),
+  'Open CASCADE STEP processor 7.8','FreeCAD','Unknown');
+FILE_SCHEMA(('AUTOMOTIVE_DESIGN { 1 0 10303 214 1 1 1 1 }'));
+ENDSEC;
+DATA;
+#1 = APPLICATION_PROTOCOL_DEFINITION('international standard',
+  'automotive_design',2000,#2);
+#2 = APPLICATION_CONTEXT(
+  'core data for automotive mechanical design processes');
+#3 = SHAPE_DEFINITION_REPRESENTATION(#4,#10);
+#4 = PRODUCT_DEFINITION_SHAPE('','',#5);
+#5 = PRODUCT_DEFINITION('design','',#6,#9);
+#6 = PRODUCT_DEFINITION_FORMATION('','',#7);
+#7 = PRODUCT('M4 shim 1mm','M4 shim 1mm','',(#8));
+#8 = PRODUCT_CONTEXT('',#2,'mechanical');
+#9 = PRODUCT_DEFINITION_CONTEXT('part definition',#2,'design');
+#10 = ADVANCED_BREP_SHAPE_REPRESENTATION('',(#11,#15),#107);
+#11 = AXIS2_PLACEMENT_3D('',#12,#13,#14);
+#12 = CARTESIAN_POINT('',(0.,0.,0.));
+#13 = DIRECTION('',(0.,0.,1.));
+#14 = DIRECTION('',(1.,0.,-0.));
+#15 = MANIFOLD_SOLID_BREP('',#16);
+#16 = CLOSED_SHELL('',(#17,#50,#70,#90));
+#17 = ADVANCED_FACE('',(#18),#45,.T.);
+#18 = FACE_BOUND('',#19,.T.);
+#19 = EDGE_LOOP('',(#20,#29,#37,#44));
+#20 = ORIENTED_EDGE('',*,*,#21,.F.);
+#21 = EDGE_CURVE('',#22,#22,#24,.T.);
+#22 = VERTEX_POINT('',#23);
+#23 = CARTESIAN_POINT('',(4.5,-1.102182119233E-15,1.));
+#24 = CIRCLE('',#25,4.5);
+#25 = AXIS2_PLACEMENT_3D('',#26,#27,#28);
+#26 = CARTESIAN_POINT('',(0.,0.,1.));
+#27 = DIRECTION('',(0.,0.,1.));
+#28 = DIRECTION('',(1.,0.,-0.));
+#29 = ORIENTED_EDGE('',*,*,#30,.F.);
+#30 = EDGE_CURVE('',#31,#22,#33,.T.);
+#31 = VERTEX_POINT('',#32);
+#32 = CARTESIAN_POINT('',(4.5,-1.102182119233E-15,0.));
+#33 = LINE('',#34,#35);
+#34 = CARTESIAN_POINT('',(4.5,-1.102182119233E-15,0.));
+#35 = VECTOR('',#36,1.);
+#36 = DIRECTION('',(0.,0.,1.));
+#37 = ORIENTED_EDGE('',*,*,#38,.T.);
+#38 = EDGE_CURVE('',#31,#31,#39,.T.);
+#39 = CIRCLE('',#40,4.5);
+#40 = AXIS2_PLACEMENT_3D('',#41,#42,#43);
+#41 = CARTESIAN_POINT('',(0.,0.,0.));
+#42 = DIRECTION('',(0.,0.,1.));
+#43 = DIRECTION('',(1.,0.,-0.));
+#44 = ORIENTED_EDGE('',*,*,#30,.T.);
+#45 = CYLINDRICAL_SURFACE('',#46,4.5);
+#46 = AXIS2_PLACEMENT_3D('',#47,#48,#49);
+#47 = CARTESIAN_POINT('',(0.,0.,0.));
+#48 = DIRECTION('',(0.,0.,1.));
+#49 = DIRECTION('',(1.,0.,-0.));
+#50 = ADVANCED_FACE('',(#51,#54),#65,.T.);
+#51 = FACE_BOUND('',#52,.T.);
+#52 = EDGE_LOOP('',(#53));
+#53 = ORIENTED_EDGE('',*,*,#21,.T.);
+#54 = FACE_BOUND('',#55,.T.);
+#55 = EDGE_LOOP('',(#56));
+#56 = ORIENTED_EDGE('',*,*,#57,.F.);
+#57 = EDGE_CURVE('',#58,#58,#60,.T.);
+#58 = VERTEX_POINT('',#59);
+#59 = CARTESIAN_POINT('',(2.25,-5.510910596163E-16,1.));
+#60 = CIRCLE('',#61,2.25);
+#61 = AXIS2_PLACEMENT_3D('',#62,#63,#64);
+#62 = CARTESIAN_POINT('',(0.,0.,1.));
+#63 = DIRECTION('',(0.,0.,1.));
+#64 = DIRECTION('',(1.,0.,-0.));
+#65 = PLANE('',#66);
+#66 = AXIS2_PLACEMENT_3D('',#67,#68,#69);
+#67 = CARTESIAN_POINT('',(0.,0.,1.));
+#68 = DIRECTION('',(0.,0.,1.));
+#69 = DIRECTION('',(1.,0.,-0.));
+#70 = ADVANCED_FACE('',(#71,#74),#85,.F.);
+#71 = FACE_BOUND('',#72,.F.);
+#72 = EDGE_LOOP('',(#73));
+#73 = ORIENTED_EDGE('',*,*,#38,.T.);
+#74 = FACE_BOUND('',#75,.F.);
+#75 = EDGE_LOOP('',(#76));
+#76 = ORIENTED_EDGE('',*,*,#77,.F.);
+#77 = EDGE_CURVE('',#78,#78,#80,.T.);
+#78 = VERTEX_POINT('',#79);
+#79 = CARTESIAN_POINT('',(2.25,-5.510910596163E-16,0.));
+#80 = CIRCLE('',#81,2.25);
+#81 = AXIS2_PLACEMENT_3D('',#82,#83,#84);
+#82 = CARTESIAN_POINT('',(0.,0.,0.));
+#83 = DIRECTION('',(0.,0.,1.));
+#84 = DIRECTION('',(1.,0.,-0.));
+#85 = PLANE('',#86);
+#86 = AXIS2_PLACEMENT_3D('',#87,#88,#89);
+#87 = CARTESIAN_POINT('',(0.,0.,0.));
+#88 = DIRECTION('',(0.,0.,1.));
+#89 = DIRECTION('',(1.,0.,-0.));
+#90 = ADVANCED_FACE('',(#91),#102,.F.);
+#91 = FACE_BOUND('',#92,.F.);
+#92 = EDGE_LOOP('',(#93,#94,#100,#101));
+#93 = ORIENTED_EDGE('',*,*,#57,.F.);
+#94 = ORIENTED_EDGE('',*,*,#95,.F.);
+#95 = EDGE_CURVE('',#78,#58,#96,.T.);
+#96 = LINE('',#97,#98);
+#97 = CARTESIAN_POINT('',(2.25,-5.510910596163E-16,-1.E-02));
+#98 = VECTOR('',#99,1.);
+#99 = DIRECTION('',(0.,0.,1.));
+#100 = ORIENTED_EDGE('',*,*,#77,.T.);
+#101 = ORIENTED_EDGE('',*,*,#95,.T.);
+#102 = CYLINDRICAL_SURFACE('',#103,2.25);
+#103 = AXIS2_PLACEMENT_3D('',#104,#105,#106);
+#104 = CARTESIAN_POINT('',(0.,0.,-1.E-02));
+#105 = DIRECTION('',(0.,0.,1.));
+#106 = DIRECTION('',(1.,0.,-0.));
+#107 = ( GEOMETRIC_REPRESENTATION_CONTEXT(3) 
+GLOBAL_UNCERTAINTY_ASSIGNED_CONTEXT((#111)) GLOBAL_UNIT_ASSIGNED_CONTEXT
+((#108,#109,#110)) REPRESENTATION_CONTEXT('Context #1',
+  '3D Context with UNIT and UNCERTAINTY') );
+#108 = ( LENGTH_UNIT() NAMED_UNIT(*) SI_UNIT(.MILLI.,.METRE.) );
+#109 = ( NAMED_UNIT(*) PLANE_ANGLE_UNIT() SI_UNIT($,.RADIAN.) );
+#110 = ( NAMED_UNIT(*) SI_UNIT($,.STERADIAN.) SOLID_ANGLE_UNIT() );
+#111 = UNCERTAINTY_MEASURE_WITH_UNIT(LENGTH_MEASURE(1.E-07),#108,
+  'distance_accuracy_value','confusion accuracy');
+#112 = PRODUCT_RELATED_PRODUCT_CATEGORY('part',$,(#7));
+ENDSEC;
+END-ISO-10303-21;
--- a/models/encoder_shared76_print_v1/Shim10.stl
+++ b/models/encoder_shared76_print_v1/Shim10.stl
--- a/models/encoder_shared76_print_v1/assembly.png
+++ b/models/encoder_shared76_print_v1/assembly.png
--- a/models/encoder_shared76_print_v1/bracket.png
+++ b/models/encoder_shared76_print_v1/bracket.png
--- a/models/encoder_shared76_print_v1/geometry_check.txt
+++ b/models/encoder_shared76_print_v1/geometry_check.txt
@@ -0,0 +1,5 @@
+Nominal gap 1.4mm: 7mm standoff body, 0.8mm motor washer, 0.5mm encoder shim.
+M4 male 8mm; through 3mm angle and 0.8mm metal washer, nominal motor engagement 4.2mm.
+M4 top shank 8mm through 0.8mm top washer + 3.2mm bracket + 0.5mm shim, female entry 3.5mm.
+Intersections above 0.001 mm3, selected complete simplified assembly pairs:
+none
--- a/models/encoder_shared76_print_v1/mesh_check.txt
+++ b/models/encoder_shared76_print_v1/mesh_check.txt
@@ -0,0 +1,3 @@
+EncoderBracket solid=True facets=4292 volume=10157.0049 zmin=0.0000
+Shim05 solid=True facets=260 volume=23.7834 zmin=0.0000
+Shim10 solid=True facets=260 volume=47.5667 zmin=0.0000
--- a/models/encoder_shared76_print_v1/rear.png
+++ b/models/encoder_shared76_print_v1/rear.png
--- a/models/encoder_shared76_print_v1/打印与装配说明.md
+++ b/models/encoder_shared76_print_v1/打印与装配说明.md
@@ -0,0 +1,46 @@
+# PCD 76 mm 共孔编码器支架：首版试装件
+
+本目录为依现有电机与编码器近似模型制作的打印试装件。角码直接贴住电机，由金属立柱和金属垫圈先独立锁紧，塑料支架位于柱另一端，只固定编码器。原电机及原磁铁座文件未修改。
+
+## 打印文件
+
+| 文件 | 数量 | 说明 |
+| --- | --- | --- |
+| `EncoderBracket.stl` | 1 | 64 × 64 × 3.2 mm 方框，四角朝左右两侧外开口 |
+| `Shim05.stl` | 4，建议多备 | 每片 0.5 mm，放在柱顶和塑料支架之间 |
+| `Shim10.stl` | 4，备用 | 每片 1.0 mm，用于调整芯片与磁铁的间距 |
+
+STL 已按打印底面放置在 Z=0。支架平放打印；开口和竖直孔无需额外建模支撑，最终以切片预览为准。建议 PETG、0.2 mm 层高、至少 3 道外墙。0.5 mm 垫片建议采用 0.1 mm 层高、避免切片把厚度四舍五入，并检查翘曲。模型中的开口宽 4.6 mm；FDM 孔和开口尺寸会受设备与材料影响，先试放 M4 螺杆。
+
+`Shared76_Print.FCStd` 为打印朝向零件，三个对象在同一原点，需在树中分别选择或直接使用单独 STL；`EncoderBracket.step` 和 `Shim*.step` 是单件交换文件。`Shared76_Assembly.FCStd`、`.step` 为装配核查模型。实体由脚本生成，几何不是尺寸表驱动的参数化草图；重建使用 `scripts/rebuild_shared76_print.FCMacro`，会覆盖本目录相关输出。
+
+## 五金及假设
+
+- 四个角码：按 20 × 20 × 18 mm、3 mm 厚模型，椭圆槽按 9.5 × 5.5 mm 假设。PCD 76 mm 四孔及 45° 相位沿用现有电机模型，须按实物确认。
+- 四根金属 M4 公母柱：模型采用**柱身 7 mm、公牙 8 mm、六角对边 7 mm**，角码表面再垫 0.8 mm 金属平垫圈，金属柱先压紧角码。可参考 [Würth Elektronik 971070471 数据表](https://www.we-online.com/components/products/datasheet/971xx0xx1.pdf) 的规格：钢镀锌、M4、公牙 8 mm、柱身 7 mm、母牙深 4.5 mm。此为尺寸参考，厂家未声明其适合方向盘电机主固定；必须确认实际柱件、足够强度、螺纹和锁紧情况。
+- 电机侧在上述假设下理论进牙 `8 − 3 − 0.8 = 4.2 mm`，真实垫圈厚度、角码厚度、螺纹深度和有效咬合均须核实；不要让螺纹顶到底。
+- 每个塑料支架脚用一个独立顶部 M4 螺丝及约外径 9 mm、厚 0.8 mm 金属垫圈。模型按支架厚 3.2 mm、每脚 0.5 mm 调整垫片，顶部 M4×8 理论进入柱内 `8 − 3.2 − 0.5 − 0.8 = 3.5 mm`。如采用参考柱 4.5 mm 女牙深，理论比底部留 1 mm；实际孔深、螺丝、垫圈与垫片必须逐个核实，确保不顶底且有足够进牙。其他立柱规格或调整垫片组合需重算。手头 M4×8 只能作为顶部候选，不能替代角码所需的公母柱。
+- PCB 采用 Ø33 mm、3 个 Ø3 mm 孔，板厚 1.6 mm、芯片突出 0.8 mm 均为假设；三颗 M2×4 mm 小自攻螺丝从芯片面穿原孔拧入支架 Ø1.8 mm 导孔，假设头部 Ø4 × 1.5 mm。先手工试配，不要强拧。PCB 背面通过中央开孔留给焊点和导线；实际元件和线材形状未知，需试放。
+- 磁铁座沿用 `models/encoder_print_v1/MagnetHolder.stl`，适配现有 Ø10 × 3 mm 径向充磁磁铁；不需要重新打印，除非原件不合适。
+
+## 磁铁间隙如何调整
+
+每个金属柱顶部、塑料支架底部放 **完全等厚** 的打印调整垫片，调整时不松动固定角码的金属柱。以下按 3 mm 角码、0.8 mm 金属垫圈、7 mm 柱身、1.6 mm PCB 和 0.8 mm 芯片高度估算，均为名义值：
+
+| 每脚垫片 | 芯片表面至磁铁表面的名义间隙 | 顶部 M4×8、0.8 mm 金属垫圈时理论进柱 |
+| --- | --- | --- |
+| 无 | 0.9 mm | 4.0 mm |
+| 0.5 mm | 1.4 mm | 3.5 mm |
+| 1 mm | 1.9 mm | 3.0 mm |
+| 1 + 0.5 mm | 2.4 mm | 2.5 mm |
+
+首先每脚放 0.5 mm 垫片。更换为 1 mm 会增大间隙；取掉垫片会减小间隙。每次都要重新核对顶部螺丝的进牙和孔底余量；例如参考柱女牙深 4.5 mm，**无垫片**时名义 4.0 mm 进牙只余 0.5 mm，公差下可能顶底。四处垫片厚度不能不同，否则 PCB 可能倾斜。实际芯片突出高度未测，真实间隙不是表中保证值；断电手动转几圈检查无碰擦，再检查角度和磁场状态。
+
+## 装配顺序
+
+1. 先将 PCB 正对磁铁的一面朝向电机，三颗 M2 自攻螺丝在拆下的支架上轻拧固定；孔留有微调余量，对准磁铁中心后再适度锁紧。检查板背焊点、PCB 元件与框架不压线。
+2. 角码直接贴在电机四个 76 mm 孔处；每孔放金属垫圈，用适合的公母柱独立锁紧角码。此时不装塑料支架在电机和角码之间。
+3. 四个柱顶各放一片同厚调整垫片，沿电机轴向摆放支架，分别装顶部 M4 螺丝及金属垫圈。四个开口左右相反，不能假定四颗螺丝预装后可整体单向侧滑装拆。顶部螺丝的实际工具空间和与 2020 型材/T 型螺母的关系尚未建模验证。
+4. 断电缓慢手转电机至少几圈，确认磁铁座、PCB、支架及线材不擦碰；再检查编码器数值和磁场。测试前确认四个角码及两侧型材可靠固定，编码器塑料支架不能承担这些力。
+
+`mesh_check.txt` 记录 STL 网格闭合、体积及打印 Z 范围；`geometry_check.txt` 是近似总装静态布尔检查。实际角码、螺丝工具、焊线、磁场和动力载荷均未实物验证。
--- a/models/encoder_standoff_plate_print/EncoderPlate.FCStd
+++ b/models/encoder_standoff_plate_print/EncoderPlate.FCStd
--- a/Show More
+++ b/Show More