solidworks-automation
SolidWorks CAD automation via Python COM interface. Full engineering workflow: part modeling, assemblies, drawings, sheet metal, weldments, simulation, file export, custom properties, design tables. Compatible with SW2020-2025. Use when user mentions SolidWorks, 3D modeling, CAD automation, part design, assembly, engineering drawing, sheet metal, STEP/STL export, 零件设计, 装配体, 工程图, 钣金设计.
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- August 21, 2026 at 14:34
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- solidworks-automation
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- SolidWorks CAD automation via Python COM interface. Full engineering workflow: part modeling, assemblies, drawings, sheet metal, weldments, simulation, file export, custom properties, design tables. Compatible with SW2020-2025. Use when user mentions SolidWorks, 3D modeling, CAD automation, part design, assembly, engineering drawing, sheet metal, STEP/STL export, 零件设计, 装配体, 工程图, 钣金设计.
# SolidWorks 自动化技能
## 快速开始
### 环境要求
- Windows 系统 + SolidWorks 已安装并运行
- Python 3.8+ + `pywin32`（`pip install pywin32`）
### 连接 SolidWorks
```python
import sys; sys.path.insert(0, r"SKILL_DIR/scripts")
from sw_connect import connect_solidworks, mm, deg, new_document
sw, model = connect_solidworks() # 连接已运行的实例
```
> 将 `SKILL_DIR` 替换为此技能的实际安装路径。
## 核心工作流
根据用户需求选择对应模块：
| 需求 | 脚本 | 参考文档 |
|---|---|---|
| 连接与文档管理 | `scripts/sw_connect.py` | - |
| 零件建模（草图+特征） | `scripts/sw_part.py` | `references/part-modeling.md` |
| 装配体操作 | `scripts/sw_assembly.py` | `references/assembly.md` |
| 工程图出图 | `scripts/sw_drawing.py` | `references/drawing.md` |
| 文件导出 | `scripts/sw_export.py` | `references/export.md` |
| 钣金/焊件/仿真/属性 | - | `references/advanced.md` |
| 常见错误排查 | - | `references/troubleshooting.md` |
## 使用流程
1. 确认 SolidWorks 正在运行
2. 调用 `connect_solidworks()` 连接实例
3. 根据需求调用对应脚本函数（组合使用）
4. 使用 `sw_export.py` 保存/导出文件
## 关键注意事项
- **单位**：API 统一使用**米**。用 `mm(50)` 转换 50mm 为 0.05m，用 `deg(90)` 转换角度
- **版本**：使用 `SldWorks.Application` 自动连接，兼容所有版本
- **选择**：特征操作前需用 `SelectByID2` 选择目标实体
- **VARIANT**：by-ref 参数必须用 `VARIANT(pythoncom.VT_BYREF | pythoncom.VT_I4, 0)` 包装
- **基准面名称**：英文版 "Front/Top/Right Plane"，中文版 "前视/上视/右视基准面"
- **草图坐标**：基于草图平面的局部坐标系，单位为米
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