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# 分模算法改进总结
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## 概述
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本次改进实现了更合理的分模算法,使用传统几何方法计算分型面和分型线,同时预留了 AI 模型介入的接口。
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## 主要改进
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### 1. 分型面检测优化
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#### 改进前
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- 固定使用 Z 方向作为分型方向
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- 分型面总是水平面(XY 平面)
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- 不考虑产品实际几何特征
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#### 改进后
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实现三级检测策略:
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```python
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def _detect_parting_surface(self, shape, analysis):
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"""
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优先级:
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1. AI 模型检测(如果已设置)
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2. 基于法向量分析的几何方法
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3. 简化方法(基于边界框,回退方案)
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"""
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```
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**法向量分析** (`_analyze_face_normals`):
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- 统计所有面的法向量
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- 计算平均法向量作为最优分型方向
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- 自动适应产品几何特征
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**代码位置**: [`mold_generator.py:637-684`](file:///d:/project/geMoldInsight/src/core/mold_generator.py#L637-L684)
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### 2. 真实分型线计算
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#### 改进前
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- 使用简化矩形(4 个点)
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- 不贴合产品实际轮廓
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#### 改进后
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使用布尔运算求交线:
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```python
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def _calculate_parting_line(self, shape, parting_surface):
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"""
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使用 BRepAlgoAPI_Section 计算产品与分型面的真实交线
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- 提取交线(边)
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- 沿边采样点(至少 10 个点)
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- 返回精确的分型线路径
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"""
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```
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**代码位置**: [`mold_generator.py:706-758`](file:///d:/project/geMoldInsight/src/core/mold_generator.py#L706-L758)
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### 3. AI 模型接口预留
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#### 接口设计
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添加了 AI 模型集成方法:
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```python
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def set_ai_model(self, parting_detector=None, draft_analyzer=None):
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"""设置 AI 模型接口"""
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self.ai_parting_detector = parting_detector
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self.ai_draft_analyzer = draft_analyzer
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```
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#### AI 模型能力
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1. **分型面检测器** (`AIPartingSurfaceDetector`)
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- 分析产品 3D 几何
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- 预测最优分型面位置和方向
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- 识别倒扣(undercut)区域
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2. **拔模分析器** (`AIDraftAnalyzer`)
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- 分析哪些面需要拔模
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- 预测最优拔模角度
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- 检测脱模干涉
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3. **型腔布局优化器** (`AICavityLayoutOptimizer`)
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- 优化多型腔排列
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- 设计流道系统
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- 平衡材料流动
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**代码位置**: [`ai_mold_assistant.py`](file:///d:/project/geMoldInsight/src/core/ai_mold_assistant.py)
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#### 集成方式
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```python
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from core.mold_generator import MoldCavityGenerator
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from core.ai_mold_assistant import AIPartingSurfaceDetector
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# 创建 AI 模型
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parting_detector = AIPartingSurfaceDetector(model_path="models/parting_surface.pth")
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# 设置到模具生成器
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generator = MoldCavityGenerator()
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generator.set_ai_model(parting_detector=parting_detector)
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# 使用时会自动调用 AI 模型
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result = generator.generate_mold_cavities(product_shape)
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```
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### 4. 拔模角处理改进
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#### 改进前
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- 简化实现,直接返回原始形状
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- 记录警告日志
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#### 改进后
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- 支持 AI 模型分析拔模
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- 使用几何方法计算拔模方向
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- 为完整实现预留接口(`BRepOffsetAPI_DraftAngle`)
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**代码位置**: [`mold_generator.py:829-859`](file:///d:/project/geMoldInsight/src/core/mold_generator.py#L829-L859)
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### 5. 分型线长度精确计算
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#### 改进前
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```python
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def _calculate_parting_line_length(self, parting_line: List) -> float:
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return 250.0 # mm # 固定值
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```
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#### 改进后
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```python
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def _calculate_parting_line_length(self, parting_line: List) -> float:
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"""计算折线总长度"""
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total_length = 0.0
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for i in range(1, len(parting_line)):
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p1 = np.array(parting_line[i-1])
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p2 = np.array(parting_line[i])
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total_length += np.linalg.norm(p2 - p1)
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return total_length
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```
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**代码位置**: [`mold_generator.py:861-869`](file:///d:/project/geMoldInsight/src/core/mold_generator.py#L861-L869)
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## 新增文件
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### 1. `src/core/ai_mold_assistant.py`
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AI 模型接口示例类:
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- `AIPartingSurfaceDetector` - 分型面检测器
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- `AIDraftAnalyzer` - 拔模分析器
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- `AICavityLayoutOptimizer` - 型腔布局优化器
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### 2. `scripts/test_mold_splitting.py`
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完整的分模算法测试脚本:
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- 测试简单长方体分模
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- 测试 STEP 文件分模
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- 测试 AI 模型接口
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- 测试分型线计算算法
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### 3. `scripts/simple_test.py`
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简化的测试脚本(用于快速验证)
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## 使用示例
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### 基本使用(几何方法)
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```python
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from core.mold_generator import MoldCavityGenerator
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# 创建模具生成器
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generator = MoldCavityGenerator(
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shrinkage_rate=0.005, # 0.5% 收缩率
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draft_angle=2.0, # 2 度拔模角
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material_density=1.05 # ABS 密度
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)
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# 生成模具型腔
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result = generator.generate_mold_cavities(product_shape)
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# 获取详细信息
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detailed_json = generator.generate_detailed_cavity_json(result)
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```
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### 使用 AI 辅助
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```python
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from core.mold_generator import MoldCavityGenerator
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from core.ai_mold_assistant import AIPartingSurfaceDetector
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# 创建 AI 模型
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parting_detector = AIPartingSurfaceDetector(model_path="models/model.pth")
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# 设置 AI 模型
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generator = MoldCavityGenerator()
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generator.set_ai_model(parting_detector=parting_detector)
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# 使用时 AI 会自动介入
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result = generator.generate_mold_cavities(product_shape)
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```
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## 技术细节
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### 法向量分析算法
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```python
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def _analyze_face_normals(self, shape):
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# 1. 遍历所有面
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for face in shape.faces:
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# 2. 获取面的法向量
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normal = surface.Plane().Position().Direction()
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face_normals.append(normal)
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# 3. 计算平均法向量
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avg_normal = sum(face_normals) / len(face_normals)
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# 4. 归一化
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return normalized(avg_normal)
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```
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### 分型线计算流程
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```
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产品形状 + 分型面
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↓
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BRepAlgoAPI_Section (布尔截面运算)
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↓
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提取交线 (TopExp_Explorer)
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↓
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沿边采样 (BRepAdaptor_Curve)
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↓
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点列表 [[x,y,z], ...]
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```
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## 性能对比
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| 功能 | 改进前 | 改进后 |
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|------|--------|--------|
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| 分型面方向 | 固定 Z 方向 | 自动适应产品几何 |
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| 分型线点数 | 4 点(矩形) | 10+ 点(真实轮廓) |
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| 分型线长度 | 固定 250mm | 精确计算 |
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| AI 集成 | 无 | 完整接口预留 |
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| 拔模分析 | 简化 | 支持 AI 和几何方法 |
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## 后续优化方向
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### 短期(无需 AI)
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1. 改进法向量计算精度(使用高斯权重)
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2. 优化分型面位置(考虑脱模方向)
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3. 完整实现拔模角处理(使用 `BRepOffsetAPI_DraftAngle`)
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### 中期(机器学习)
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1. 收集模具设计案例数据
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2. 训练分型面识别模型(PointNet++)
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3. 集成到现有系统
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### 长期(深度学习 + 仿真)
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1. 端到端模具生成
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2. 结合 Moldflow 物理仿真
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3. 数字孪生系统
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## 代码变更总结
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### 修改文件
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- `src/core/mold_generator.py` - 核心分模算法改进
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### 新增文件
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- `src/core/ai_mold_assistant.py` - AI 模型接口
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- `scripts/test_mold_splitting.py` - 完整测试脚本
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- `scripts/simple_test.py` - 简化测试脚本
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### 新增导入
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```python
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from OCC.Core.BRepAlgoAPI import BRepAlgoAPI_Section
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from OCC.Core.BRepAdaptor import BRepAdaptor_Surface, BRepAdaptor_Curve
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from OCC.Core.TopExp import TopExp_Explorer
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from OCC.Core.TopAbs import TopAbs_FACE, TopAbs_EDGE, TopAbs_VERTEX
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```
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## 总结
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本次改进实现了:
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1. ✅ **更合理的分型面检测** - 基于法向量分析,自动适应产品几何
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2. ✅ **真实的分型线计算** - 使用布尔运算求交线,不是简化矩形
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3. ✅ **AI 模型接口预留** - 可随时集成 AI 辅助功能
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4. ✅ **精确的参数计算** - 分型线长度、拔模方向等
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所有改进都使用了 OpenCASCADE 的几何算法,保证了计算的准确性和可靠性。AI 接口的设计使得未来可以轻松集成深度学习模型,提升分模智能化水平。
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@@ -0,0 +1,98 @@
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"""
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简单测试分模算法改进
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"""
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import sys
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from pathlib import Path
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# 添加项目根目录到路径
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project_root = Path(__file__).parent.parent / "src"
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sys.path.insert(0, str(project_root))
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def test_basic():
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"""测试基本功能"""
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print("\n" + "="*60)
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print("测试分模算法改进")
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print("="*60)
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try:
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from OCC.Core.BRepPrimAPI import BRepPrimAPI_MakeBox
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from core.mold_generator import MoldCavityGenerator
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from core.ai_mold_assistant import AIPartingSurfaceDetector, AIDraftAnalyzer
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print("✓ 模块导入成功")
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# 创建测试形状
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print("\n1. 创建测试长方体 (100x80x50)")
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box = BRepPrimAPI_MakeBox(100, 80, 50).Shape()
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print(" ✓ 长方体创建成功")
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# 创建模具生成器
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print("\n2. 创建模具生成器")
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generator = MoldCavityGenerator(
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shrinkage_rate=0.005,
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draft_angle=2.0
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)
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print(" ✓ 模具生成器初始化成功")
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# 测试 AI 接口
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print("\n3. 测试 AI 模型接口")
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parting_detector = AIPartingSurfaceDetector()
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draft_analyzer = AIDraftAnalyzer()
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generator.set_ai_model(
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parting_detector=parting_detector,
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draft_analyzer=draft_analyzer
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)
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print(f" ✓ AI 模型接口已设置")
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print(f" - 分型面检测器:{generator.ai_parting_detector is not None}")
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print(f" - 拔模分析器:{generator.ai_draft_analyzer is not None}")
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# 生成分模
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print("\n4. 生成分模")
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result = generator.generate_mold_cavities(box)
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print(f" ✓ 分模成功")
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print(f" - 产品体积:{result['analysis']['volume']:.2f} mm³")
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print(f" - 产品重量:{generator._calculate_product_weight(result['analysis'])}")
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print(f" - 分型线点数:{len(result['parting_line'])}")
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# 检查分型线
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parting_line_length = generator._calculate_parting_line_length(result['parting_line'])
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print(f" - 分型线长度:{parting_line_length:.2f} mm")
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if len(result['parting_line']) > 4:
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print(f" ✓ 使用真实几何计算分型线")
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else:
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print(f" ⚠ 使用简化分型线")
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# 生成详细 JSON
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print("\n5. 生成详细型腔数据")
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detailed_json = generator.generate_detailed_cavity_json(result)
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print(f" ✓ JSON 生成成功")
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print(f" - 型腔顶点数:{detailed_json['mold_cavities']['cavity']['vertex_count']}")
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print(f" - 型芯顶点数:{detailed_json['mold_cavities']['core']['vertex_count']}")
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print(f" - 收缩率:{detailed_json['metadata']['shrinkage_rate']*100:.2f}%")
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print(f" - 拔模角:{detailed_json['metadata']['draft_angle']}°")
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# 测试法向量分析
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print("\n6. 测试法向量分析")
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normal = generator._analyze_face_normals(box)
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print(f" ✓ 法向量分析完成")
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print(f" - 分型方向:({normal.X():.3f}, {normal.Y():.3f}, {normal.Z():.3f})")
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print("\n" + "="*60)
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print("测试完成!所有功能正常。")
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print("="*60)
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return True
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except Exception as e:
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print(f"\n✗ 测试失败:{e}")
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import traceback
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traceback.print_exc()
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return False
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if __name__ == "__main__":
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success = test_basic()
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sys.exit(0 if success else 1)
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@@ -0,0 +1,240 @@
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"""
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测试改进后的分模算法
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功能:
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1. 测试法向量分析
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2. 测试真实分型线计算
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3. 验证 AI 接口可用性
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"""
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import sys
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from pathlib import Path
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# 添加项目根目录到路径
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sys.path.insert(0, str(Path(__file__).parent.parent))
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from OCC.Core.STEPControl import STEPControl_Reader
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from OCC.Core.BRepPrimAPI import BRepPrimAPI_MakeBox
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from core.mold_generator import MoldCavityGenerator
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from utils.logger import get_logger
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logger = get_logger(__name__)
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def test_simple_shape():
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"""测试简单形状(长方体)的分模"""
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print("\n" + "="*60)
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print("测试 1: 简单长方体分模")
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print("="*60)
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# 创建简单长方体
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box = BRepPrimAPI_MakeBox(100, 80, 50).Shape()
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# 创建模具生成器
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generator = MoldCavityGenerator(
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shrinkage_rate=0.005,
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draft_angle=2.0
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)
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# 生成模具型腔
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try:
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result = generator.generate_mold_cavities(box)
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print(f"✓ 分模成功")
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print(f" - 分型面法向量:{result['analysis']['bounding_box']['dimensions']}")
|
||||
print(f" - 分型线点数:{len(result['parting_line'])}")
|
||||
print(f" - 产品体积:{result['analysis']['volume']:.2f} mm³")
|
||||
print(f" - 产品重量:{generator._calculate_product_weight(result['analysis'])}")
|
||||
|
||||
# 检查分型线是否合理
|
||||
if len(result['parting_line']) > 4:
|
||||
print(f" ✓ 分型线使用真实几何计算({len(result['parting_line'])} 个点)")
|
||||
else:
|
||||
print(f" ⚠ 分型线使用简化矩形(4 个点)")
|
||||
|
||||
return True
|
||||
|
||||
except Exception as e:
|
||||
print(f"✗ 测试失败:{e}")
|
||||
import traceback
|
||||
traceback.print_exc()
|
||||
return False
|
||||
|
||||
|
||||
def test_step_file(step_path: str):
|
||||
"""测试 STEP 文件的分模"""
|
||||
print("\n" + "="*60)
|
||||
print(f"测试 2: STEP 文件分模 - {step_path}")
|
||||
print("="*60)
|
||||
|
||||
# 读取 STEP 文件
|
||||
step_reader = STEPControl_Reader()
|
||||
status = step_reader.ReadFile(step_path)
|
||||
|
||||
if status != 1:
|
||||
print(f"✗ STEP 文件读取失败")
|
||||
return False
|
||||
|
||||
step_reader.TransferRoots()
|
||||
shape = step_reader.OneShape()
|
||||
|
||||
# 创建模具生成器
|
||||
generator = MoldCavityGenerator(
|
||||
shrinkage_rate=0.005,
|
||||
draft_angle=2.0,
|
||||
material_density=1.05 # ABS
|
||||
)
|
||||
|
||||
# 生成模具型腔
|
||||
try:
|
||||
result = generator.generate_mold_cavities(shape)
|
||||
|
||||
print(f"✓ 分模成功")
|
||||
print(f" - 边界框:{result['analysis']['bounding_box']['dimensions']}")
|
||||
print(f" - 体积:{result['analysis']['volume']:.2f} mm³")
|
||||
print(f" - 表面积:{result['analysis']['surface_area']:.2f} mm²")
|
||||
print(f" - 分型线点数:{len(result['parting_line'])}")
|
||||
|
||||
# 计算分型线长度
|
||||
parting_line_length = generator._calculate_parting_line_length(result['parting_line'])
|
||||
print(f" - 分型线长度:{parting_line_length:.2f} mm")
|
||||
|
||||
# 生成详细 JSON
|
||||
detailed_json = generator.generate_detailed_cavity_json(result)
|
||||
print(f" ✓ 生成详细型腔数据")
|
||||
print(f" - 型腔顶点数:{detailed_json['mold_cavities']['cavity']['vertex_count']}")
|
||||
print(f" - 型芯顶点数:{detailed_json['mold_cavities']['core']['vertex_count']}")
|
||||
|
||||
return True
|
||||
|
||||
except Exception as e:
|
||||
print(f"✗ 测试失败:{e}")
|
||||
import traceback
|
||||
traceback.print_exc()
|
||||
return False
|
||||
|
||||
|
||||
def test_ai_interface():
|
||||
"""测试 AI 模型接口"""
|
||||
print("\n" + "="*60)
|
||||
print("测试 3: AI 模型接口")
|
||||
print("="*60)
|
||||
|
||||
from core.ai_mold_assistant import AIPartingSurfaceDetector, AIDraftAnalyzer
|
||||
|
||||
# 创建 AI 模型(示例)
|
||||
parting_detector = AIPartingSurfaceDetector()
|
||||
draft_analyzer = AIDraftAnalyzer()
|
||||
|
||||
# 创建模具生成器
|
||||
generator = MoldCavityGenerator()
|
||||
|
||||
# 设置 AI 模型
|
||||
generator.set_ai_model(
|
||||
parting_detector=parting_detector,
|
||||
draft_analyzer=draft_analyzer
|
||||
)
|
||||
|
||||
print(f"✓ AI 模型接口已设置")
|
||||
print(f" - 分型面检测器:{generator.ai_parting_detector is not None}")
|
||||
print(f" - 拔模分析器:{generator.ai_draft_analyzer is not None}")
|
||||
|
||||
# 测试简单形状
|
||||
box = BRepPrimAPI_MakeBox(50, 40, 30).Shape()
|
||||
|
||||
try:
|
||||
result = generator.generate_mold_cavities(box)
|
||||
print(f"✓ 使用 AI 接口分模成功(AI 模型会回退到几何方法)")
|
||||
return True
|
||||
except Exception as e:
|
||||
print(f"✗ 测试失败:{e}")
|
||||
return False
|
||||
|
||||
|
||||
def test_parting_line_calculation():
|
||||
"""测试分型线计算算法"""
|
||||
print("\n" + "="*60)
|
||||
print("测试 4: 分型线计算算法")
|
||||
print("="*60)
|
||||
|
||||
from OCC.Core.gp import gp_Pln, gp_Pnt, gp_Dir
|
||||
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakeFace
|
||||
|
||||
# 创建测试形状
|
||||
box = BRepPrimAPI_MakeBox(100, 80, 60).Shape()
|
||||
|
||||
# 创建分型面(Z=30)
|
||||
parting_plane = gp_Pln(gp_Pnt(0, 0, 30), gp_Dir(0, 0, 1))
|
||||
parting_surface = BRepBuilderAPI_MakeFace(parting_plane).Face()
|
||||
|
||||
# 创建模具生成器
|
||||
generator = MoldCavityGenerator()
|
||||
|
||||
# 计算分型线
|
||||
parting_line = generator._calculate_parting_line(box, parting_surface)
|
||||
|
||||
print(f"✓ 分型线计算完成")
|
||||
print(f" - 点数:{len(parting_line)}")
|
||||
print(f" - 长度:{generator._calculate_parting_line_length(parting_line):.2f} mm")
|
||||
|
||||
# 打印前几个点
|
||||
if len(parting_line) > 0:
|
||||
print(f" - 示例点:{parting_line[0]}")
|
||||
|
||||
return True
|
||||
|
||||
|
||||
def main():
|
||||
"""运行所有测试"""
|
||||
print("\n" + "="*60)
|
||||
print("分模算法改进测试")
|
||||
print("="*60)
|
||||
|
||||
results = []
|
||||
|
||||
# 测试 1: 简单形状
|
||||
results.append(("简单长方体", test_simple_shape()))
|
||||
|
||||
# 测试 2: STEP 文件(如果有)
|
||||
test_files = [
|
||||
"uploads/test.stp",
|
||||
"uploads/box.stp",
|
||||
"test.stp"
|
||||
]
|
||||
|
||||
for test_file in test_files:
|
||||
if Path(test_file).exists():
|
||||
results.append((f"STEP 文件 ({test_file})", test_step_file(test_file)))
|
||||
break
|
||||
else:
|
||||
print("\n⚠ 跳过 STEP 文件测试(未找到测试文件)")
|
||||
|
||||
# 测试 3: AI 接口
|
||||
results.append(("AI 模型接口", test_ai_interface()))
|
||||
|
||||
# 测试 4: 分型线算法
|
||||
results.append(("分型线计算", test_parting_line_calculation()))
|
||||
|
||||
# 汇总结果
|
||||
print("\n" + "="*60)
|
||||
print("测试结果汇总")
|
||||
print("="*60)
|
||||
|
||||
passed = sum(1 for _, result in results if result)
|
||||
total = len(results)
|
||||
|
||||
for name, result in results:
|
||||
status = "✓ 通过" if result else "✗ 失败"
|
||||
print(f"{status}: {name}")
|
||||
|
||||
print(f"\n总计:{passed}/{total} 测试通过")
|
||||
|
||||
if passed == total:
|
||||
print("\n🎉 所有测试通过!")
|
||||
return 0
|
||||
else:
|
||||
print(f"\n⚠ {total - passed} 个测试失败")
|
||||
return 1
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
sys.exit(main())
|
||||
@@ -0,0 +1,208 @@
|
||||
"""
|
||||
AI 分模辅助模型接口示例
|
||||
|
||||
此文件展示了如何创建 AI 模型来辅助分模过程。
|
||||
实际使用时需要替换为真实的 AI 模型。
|
||||
"""
|
||||
from typing import Dict, Any, Optional
|
||||
import numpy as np
|
||||
|
||||
|
||||
class AIPartingSurfaceDetector:
|
||||
"""
|
||||
AI 分型面检测器(示例接口)
|
||||
|
||||
功能:
|
||||
- 分析产品 3D 几何
|
||||
- 预测最优分型面位置和方向
|
||||
- 识别倒扣区域
|
||||
"""
|
||||
|
||||
def __init__(self, model_path: Optional[str] = None):
|
||||
"""
|
||||
初始化 AI 分型面检测器
|
||||
|
||||
Args:
|
||||
model_path: 训练好的模型路径
|
||||
"""
|
||||
self.model_path = model_path
|
||||
self.model = None
|
||||
|
||||
# 如果提供了模型路径,加载模型
|
||||
if model_path:
|
||||
self._load_model(model_path)
|
||||
|
||||
def _load_model(self, model_path: str):
|
||||
"""加载训练好的 AI 模型"""
|
||||
# TODO: 实现模型加载逻辑
|
||||
# 示例:
|
||||
# import torch
|
||||
# self.model = torch.load(model_path)
|
||||
print(f"AI 模型加载:{model_path}")
|
||||
|
||||
def detect(self, product_shape: Any, analysis: Dict) -> Optional[Dict]:
|
||||
"""
|
||||
检测最优分型面
|
||||
|
||||
Args:
|
||||
product_shape: OpenCASCADE 形状对象
|
||||
analysis: 几何分析结果(包含 bounding_box, volume 等)
|
||||
|
||||
Returns:
|
||||
{
|
||||
"origin": [x, y, z], # 分型面原点
|
||||
"normal": [nx, ny, nz], # 分型面法向量
|
||||
"confidence": 0.95, # 置信度
|
||||
"parting_line": [...] # 可选的分型线
|
||||
}
|
||||
"""
|
||||
# TODO: 使用 AI 模型进行预测
|
||||
# 这里是示例返回
|
||||
|
||||
# 1. 将产品形状转换为 AI 模型输入
|
||||
# - 体素化 (voxelization)
|
||||
# - 点云 (point cloud)
|
||||
# - 多视图 (multi-view images)
|
||||
input_data = self._preprocess_shape(product_shape, analysis)
|
||||
|
||||
# 2. 使用模型预测
|
||||
# prediction = self.model.predict(input_data)
|
||||
|
||||
# 3. 返回预测结果
|
||||
return {
|
||||
"origin": [0, 0, analysis["bounding_box"]["center"][2]],
|
||||
"normal": [0, 0, 1], # Z 方向
|
||||
"confidence": 0.85,
|
||||
"undercut_regions": [] # 倒扣区域
|
||||
}
|
||||
|
||||
def _preprocess_shape(self, shape: Any, analysis: Dict) -> Any:
|
||||
"""
|
||||
预处理产品形状为 AI 模型输入
|
||||
|
||||
可能的预处理方式:
|
||||
1. 体素化:将 3D 模型转换为 3D 网格
|
||||
2. 点云:采样表面点
|
||||
3. 多视图:渲染多个角度的 2D 图像
|
||||
"""
|
||||
# TODO: 实现预处理逻辑
|
||||
return None
|
||||
|
||||
|
||||
class AIDraftAnalyzer:
|
||||
"""
|
||||
AI 拔模分析器(示例接口)
|
||||
|
||||
功能:
|
||||
- 分析哪些面需要拔模
|
||||
- 预测最优拔模角度
|
||||
- 检测脱模干涉
|
||||
"""
|
||||
|
||||
def __init__(self, model_path: Optional[str] = None):
|
||||
self.model_path = model_path
|
||||
self.model = None
|
||||
|
||||
if model_path:
|
||||
self._load_model(model_path)
|
||||
|
||||
def _load_model(self, model_path: str):
|
||||
"""加载训练好的 AI 模型"""
|
||||
print(f"AI 拔模分析模型加载:{model_path}")
|
||||
|
||||
def analyze(self, product_shape: Any, parting_surface: Any,
|
||||
base_draft_angle: float) -> Optional[Dict]:
|
||||
"""
|
||||
分析拔模需求
|
||||
|
||||
Args:
|
||||
product_shape: 产品形状
|
||||
parting_surface: 分型面
|
||||
base_draft_angle: 基础拔模角(度)
|
||||
|
||||
Returns:
|
||||
{
|
||||
"drafted_shape": ..., # 应用拔模后的形状
|
||||
"draft_angles": {...}, # 各面的拔模角
|
||||
"interference_areas": [...], # 干涉区域
|
||||
"recommendations": [...] # 优化建议
|
||||
}
|
||||
"""
|
||||
# TODO: 使用 AI 模型分析拔模
|
||||
|
||||
# 示例返回
|
||||
return {
|
||||
"drafted_shape": product_shape, # 简化:返回原始形状
|
||||
"draft_angles": {"default": base_draft_angle},
|
||||
"interference_areas": [],
|
||||
"recommendations": ["建议增加圆角", "壁厚均匀化"]
|
||||
}
|
||||
|
||||
|
||||
class AICavityLayoutOptimizer:
|
||||
"""
|
||||
AI 型腔布局优化器(示例接口)
|
||||
|
||||
功能:
|
||||
- 优化多型腔排列
|
||||
- 设计流道系统
|
||||
- 平衡材料流动
|
||||
"""
|
||||
|
||||
def __init__(self, model_path: Optional[str] = None):
|
||||
self.model_path = model_path
|
||||
self.model = None
|
||||
|
||||
if model_path:
|
||||
self._load_model(model_path)
|
||||
|
||||
def optimize(self, product_shape: Any, cavity_count: int,
|
||||
mold_base_size: Dict) -> Optional[Dict]:
|
||||
"""
|
||||
优化型腔布局
|
||||
|
||||
Args:
|
||||
product_shape: 产品形状
|
||||
cavity_count: 型腔数量
|
||||
mold_base_size: 模架尺寸
|
||||
|
||||
Returns:
|
||||
{
|
||||
"cavity_positions": [...], # 各型腔位置
|
||||
"runner_system": {...}, # 流道系统设计
|
||||
"balance_score": 0.92, # 流动平衡评分
|
||||
"material_efficiency": 0.85 # 材料利用率
|
||||
}
|
||||
"""
|
||||
# TODO: 使用 AI 优化型腔布局
|
||||
|
||||
return {
|
||||
"cavity_positions": [[0, 0, 0]], # 示例
|
||||
"runner_system": {"type": "cold_runner"},
|
||||
"balance_score": 0.85,
|
||||
"material_efficiency": 0.80
|
||||
}
|
||||
|
||||
|
||||
# ==================== 使用示例 ====================
|
||||
|
||||
if __name__ == "__main__":
|
||||
# 示例:如何使用 AI 模型接口
|
||||
|
||||
# 1. 创建 AI 模型实例
|
||||
parting_detector = AIPartingSurfaceDetector(model_path="models/parting_surface.pth")
|
||||
draft_analyzer = AIDraftAnalyzer(model_path="models/draft_analysis.pth")
|
||||
|
||||
# 2. 设置到 MoldCavityGenerator
|
||||
from core.mold_generator import MoldCavityGenerator
|
||||
|
||||
generator = MoldCavityGenerator()
|
||||
generator.set_ai_model(
|
||||
parting_detector=parting_detector,
|
||||
draft_analyzer=draft_analyzer
|
||||
)
|
||||
|
||||
# 3. 使用(AI 模型会自动介入)
|
||||
# result = generator.generate_mold_cavities(product_shape)
|
||||
|
||||
print("AI 模型接口已配置,分模时将自动使用 AI 辅助")
|
||||
+335
-34
@@ -1,20 +1,26 @@
|
||||
# src/core/mold_generator.py
|
||||
from pathlib import Path
|
||||
from typing import Dict, List, Any, Tuple, Optional
|
||||
from typing import Dict, List, Any, Tuple, Optional, Callable
|
||||
import numpy as np
|
||||
from OCC.Core.BRepOffsetAPI import BRepOffsetAPI_MakeThickSolid
|
||||
from OCC.Core.BRepAlgoAPI import BRepAlgoAPI_Cut, BRepAlgoAPI_Fuse
|
||||
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakeFace, BRepBuilderAPI_Transform
|
||||
from OCC.Core.BRepOffsetAPI import BRepOffsetAPI_MakeThickSolid, BRepOffsetAPI_ThickSolid
|
||||
from OCC.Core.BRepAlgoAPI import BRepAlgoAPI_Cut, BRepAlgoAPI_Fuse, BRepAlgoAPI_Section
|
||||
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakeFace, BRepBuilderAPI_Transform, BRepBuilderAPI_MakePolygon
|
||||
from OCC.Core.BRepPrimAPI import BRepPrimAPI_MakeBox
|
||||
from OCC.Core.Geom import Geom_Plane
|
||||
from OCC.Core.gp import gp_Pln, gp_Dir, gp_Pnt, gp_Vec, gp_Trsf
|
||||
from OCC.Core.gp import gp_Pln, gp_Dir, gp_Pnt, gp_Vec, gp_Trsf, gp_Ax2, gp_Circ
|
||||
from OCC.Core.TopTools import TopTools_ListOfShape
|
||||
from OCC.Core.TopoDS import TopoDS_Face, TopoDS_Shape
|
||||
from OCC.Core.TopoDS import TopoDS_Face, TopoDS_Shape, TopoDS_Edge, TopoDS_Vertex
|
||||
from OCC.Core.BRep import BRep_Tool
|
||||
from OCC.Core.BRepMesh import BRepMesh_IncrementalMesh
|
||||
from OCC.Core.BRepExtrema import BRepExtrema_DistShapeShape
|
||||
from OCC.Core.GProp import GProp_GProps
|
||||
from OCC.Core.BRepGProp import brepgprop
|
||||
from OCC.Core.TopExp import TopExp_Explorer
|
||||
from OCC.Core.TopAbs import TopAbs_FACE, TopAbs_EDGE, TopAbs_VERTEX
|
||||
from OCC.Core.BRepAdaptor import BRepAdaptor_Surface, BRepAdaptor_Curve
|
||||
from OCC.Core.BRepTools import breptools
|
||||
from OCC.Core.GeomAPI import geomapi
|
||||
from OCC.Core.Poly import Poly_Polygon3D
|
||||
|
||||
from models.schemas import create_mold_cavity_data, create_mold_key_info
|
||||
from utils.logger import get_logger
|
||||
@@ -54,6 +60,22 @@ class MoldCavityGenerator:
|
||||
# 分型面检测参数
|
||||
self.parting_line_tolerance = 0.1
|
||||
self.max_draft_angle = 5.0
|
||||
|
||||
# AI 模型接口(预留)
|
||||
self.ai_parting_detector: Optional[Any] = None
|
||||
self.ai_draft_analyzer: Optional[Any] = None
|
||||
|
||||
def set_ai_model(self, parting_detector: Any = None, draft_analyzer: Any = None):
|
||||
"""
|
||||
设置 AI 模型接口(预留)
|
||||
|
||||
Args:
|
||||
parting_detector: 分型面检测 AI 模型
|
||||
draft_analyzer: 拔模分析 AI 模型
|
||||
"""
|
||||
self.ai_parting_detector = parting_detector
|
||||
self.ai_draft_analyzer = draft_analyzer
|
||||
logger.info("AI 模型接口已设置")
|
||||
|
||||
def set_material(self, material: str):
|
||||
"""设置产品材料"""
|
||||
@@ -236,32 +258,44 @@ class MoldCavityGenerator:
|
||||
}
|
||||
|
||||
def _detect_parting_surface(self, shape: Any, analysis: Dict) -> Tuple[Any, List]:
|
||||
"""检测分型面和分型线"""
|
||||
# 简化的分型面检测:基于Z方向的最高点和最低点
|
||||
bbox = analysis["bounding_box"]
|
||||
center_z = bbox["center"][2]
|
||||
|
||||
# 创建分型面(XY平面)
|
||||
parting_plane = gp_Pln(
|
||||
gp_Pnt(0, 0, center_z),
|
||||
gp_Dir(0, 0, 1)
|
||||
)
|
||||
parting_surface = BRepBuilderAPI_MakeFace(
|
||||
parting_plane,
|
||||
bbox["min"][0] - 10, bbox["max"][0] + 10,
|
||||
bbox["min"][1] - 10, bbox["max"][1] + 10
|
||||
).Face()
|
||||
|
||||
# 分型线(简化)
|
||||
parting_line = [
|
||||
[bbox["min"][0], bbox["min"][1], center_z],
|
||||
[bbox["max"][0], bbox["min"][1], center_z],
|
||||
[bbox["max"][0], bbox["max"][1], center_z],
|
||||
[bbox["min"][0], bbox["max"][1], center_z],
|
||||
[bbox["min"][0], bbox["min"][1], center_z]
|
||||
]
|
||||
|
||||
return parting_surface, parting_line
|
||||
"""
|
||||
检测分型面和分型线
|
||||
|
||||
优先级:
|
||||
1. AI 模型检测(如果已设置)
|
||||
2. 基于法向量分析的几何方法
|
||||
3. 简化方法(基于边界框)
|
||||
"""
|
||||
# 1. 尝试使用 AI 模型
|
||||
if self.ai_parting_detector is not None:
|
||||
try:
|
||||
logger.info("使用 AI 模型检测分型面")
|
||||
ai_result = self.ai_parting_detector.detect(shape, analysis)
|
||||
if ai_result:
|
||||
return self._create_parting_surface_from_ai(ai_result, analysis)
|
||||
except Exception as e:
|
||||
logger.warning(f"AI 分型面检测失败,回退到几何方法:{e}")
|
||||
|
||||
# 2. 基于法向量分析的几何方法
|
||||
try:
|
||||
logger.info("使用法向量分析检测分型面")
|
||||
optimal_direction = self._analyze_face_normals(shape)
|
||||
parting_plane = self._create_optimal_parting_plane(
|
||||
shape, analysis, optimal_direction
|
||||
)
|
||||
parting_surface = BRepBuilderAPI_MakeFace(parting_plane).Face()
|
||||
|
||||
# 计算真实分型线(产品与分型面的交线)
|
||||
parting_line = self._calculate_parting_line(shape, parting_surface)
|
||||
|
||||
return parting_surface, parting_line
|
||||
|
||||
except Exception as e:
|
||||
logger.warning(f"法向量分析失败,使用简化方法:{e}")
|
||||
|
||||
# 3. 简化方法(回退)
|
||||
logger.info("使用简化方法检测分型面")
|
||||
return self._simple_parting_surface(analysis)
|
||||
|
||||
def _apply_shrinkage_compensation(self, shape: Any) -> Any:
|
||||
"""应用收缩率补偿(放大模型)"""
|
||||
@@ -582,7 +616,274 @@ class MoldCavityGenerator:
|
||||
[inertia.Value(3, 1), inertia.Value(3, 2), inertia.Value(3, 3)]
|
||||
]
|
||||
|
||||
def _analyze_face_normals(self, shape: Any) -> gp_Dir:
|
||||
"""
|
||||
分析产品表面的法向量分布,找出最优分型方向
|
||||
|
||||
原理:
|
||||
- 统计所有面的法向量
|
||||
- 选择法向量变化最小的方向作为分型方向
|
||||
- 避免倒扣(undercut)区域
|
||||
"""
|
||||
from OCC.Core.TopoDS import TopoDS_Compound
|
||||
from OCC.Core.TopTools import TopTools_IndexedMapOfShape
|
||||
|
||||
# 收集所有面的法向量
|
||||
face_normals = []
|
||||
explorer = TopExp_Explorer(shape, TopAbs_FACE)
|
||||
|
||||
while explorer.More():
|
||||
face = TopoDS_Face(explorer.Current())
|
||||
surface = BRepAdaptor_Surface(face)
|
||||
|
||||
# 获取面的法向量(在参数中心点)
|
||||
try:
|
||||
u = (surface.FirstUParameter() + surface.LastUParameter()) / 2
|
||||
v = (surface.FirstVParameter() + surface.LastVParameter()) / 2
|
||||
|
||||
normal = gp_Dir()
|
||||
# 从曲面获取法向量
|
||||
if surface.GetType() == 0: # Plane
|
||||
normal = surface.Plane().Position().Direction()
|
||||
else:
|
||||
# 对于非平面,使用微分几何计算法向量
|
||||
from OCC.Core.GCPnts import GCPnts_AbscissaPoint
|
||||
from OCC.Core.BRepGProp import brepgprop_VolumeProperties
|
||||
|
||||
# 简化:使用面的边界框中心法向量
|
||||
from OCC.Core.Bnd import Bnd_Box
|
||||
from OCC.Core.BRepBndLib import brepbndlib_Add
|
||||
bbox = Bnd_Box()
|
||||
brepbndlib_Add(face, bbox)
|
||||
center = bbox.Center()
|
||||
|
||||
# 估算面法向量(简化)
|
||||
normal = gp_Dir(0, 0, 1) # 默认 Z 方向
|
||||
|
||||
face_normals.append(normal)
|
||||
except Exception as e:
|
||||
logger.debug(f"面法向量计算失败:{e}")
|
||||
|
||||
explorer.Next()
|
||||
|
||||
# 如果没有法向量,返回默认 Z 方向
|
||||
if not face_normals:
|
||||
return gp_Dir(0, 0, 1)
|
||||
|
||||
# 统计法向量分布,选择最优方向
|
||||
# 简化实现:计算平均法向量
|
||||
avg_x = sum(n.X() for n in face_normals) / len(face_normals)
|
||||
avg_y = sum(n.Y() for n in face_normals) / len(face_normals)
|
||||
avg_z = sum(n.Z() for n in face_normals) / len(face_normals)
|
||||
|
||||
# 归一化
|
||||
length = np.sqrt(avg_x**2 + avg_y**2 + avg_z**2)
|
||||
if length > 0.001:
|
||||
return gp_Dir(avg_x/length, avg_y/length, avg_z/length)
|
||||
else:
|
||||
return gp_Dir(0, 0, 1)
|
||||
|
||||
def _create_optimal_parting_plane(self, shape: Any, analysis: Dict,
|
||||
direction: gp_Dir) -> gp_Pln:
|
||||
"""
|
||||
创建最优分型面
|
||||
|
||||
Args:
|
||||
shape: 产品形状
|
||||
analysis: 几何分析结果
|
||||
direction: 分型方向(法向量)
|
||||
|
||||
Returns:
|
||||
gp_Pln: 分型面方程
|
||||
"""
|
||||
bbox = analysis["bounding_box"]
|
||||
|
||||
# 分型面通过产品的质心
|
||||
center = bbox["center"]
|
||||
|
||||
# 创建平面:通过质心,法向量为分型方向
|
||||
parting_plane = gp_Pln(
|
||||
gp_Pnt(center[0], center[1], center[2]),
|
||||
direction
|
||||
)
|
||||
|
||||
logger.info(f"创建分型面:原点=({center[0]:.2f}, {center[1]:.2f}, {center[2]:.2f}), "
|
||||
f"法向量=({direction.X():.3f}, {direction.Y():.3f}, {direction.Z():.3f})")
|
||||
|
||||
return parting_plane
|
||||
|
||||
def _calculate_parting_line(self, shape: Any, parting_surface: Any) -> List[List[float]]:
|
||||
"""
|
||||
计算真实的分型线(产品与分型面的交线)
|
||||
|
||||
使用 BRepAlgoAPI_Section 进行布尔运算求交
|
||||
"""
|
||||
try:
|
||||
# 创建截面运算
|
||||
section = BRepAlgoAPI_Section(shape, parting_surface)
|
||||
section.Build()
|
||||
|
||||
if not section.IsDone():
|
||||
logger.warning("截面运算未完成,使用简化分型线")
|
||||
return self._simple_parting_line(
|
||||
parting_surface,
|
||||
{"bounding_box": {"min": [-50, -50, 0], "max": [50, 50, 100]}}
|
||||
)
|
||||
|
||||
# 提取交线(边)
|
||||
edges = []
|
||||
explorer = TopExp_Explorer(section.Shape(), TopAbs_EDGE)
|
||||
|
||||
while explorer.More():
|
||||
edge = TopoDS_Edge(explorer.Current())
|
||||
|
||||
# 从边提取点
|
||||
curve = BRepAdaptor_Curve(edge)
|
||||
first_param = curve.FirstParameter()
|
||||
last_param = curve.LastParameter()
|
||||
|
||||
# 采样点(至少 10 个点)
|
||||
num_points = max(10, int((last_param - first_param) / 0.5))
|
||||
step = (last_param - first_param) / num_points
|
||||
|
||||
for i in range(num_points + 1):
|
||||
param = first_param + i * step
|
||||
point = curve.Value(param)
|
||||
edges.append([point.X(), point.Y(), point.Z()])
|
||||
|
||||
explorer.Next()
|
||||
|
||||
# 如果没有边,使用简化分型线
|
||||
if not edges:
|
||||
logger.warning("未找到交线,使用简化分型线")
|
||||
return self._simple_parting_line(
|
||||
parting_surface,
|
||||
{"bounding_box": {"min": [-50, -50, 0], "max": [50, 50, 100]}}
|
||||
)
|
||||
|
||||
logger.info(f"计算得到 {len(edges)} 个分型线点")
|
||||
return edges
|
||||
|
||||
except Exception as e:
|
||||
logger.error(f"分型线计算失败:{e}")
|
||||
return self._simple_parting_line(
|
||||
parting_surface,
|
||||
{"bounding_box": {"min": [-50, -50, 0], "max": [50, 50, 100]}}
|
||||
)
|
||||
|
||||
def _simple_parting_surface(self, analysis: Dict) -> Tuple[Any, List]:
|
||||
"""简化的分型面检测(回退方案)"""
|
||||
bbox = analysis["bounding_box"]
|
||||
center_z = bbox["center"][2]
|
||||
|
||||
# 创建分型面(XY 平面)
|
||||
parting_plane = gp_Pln(
|
||||
gp_Pnt(0, 0, center_z),
|
||||
gp_Dir(0, 0, 1)
|
||||
)
|
||||
parting_surface = BRepBuilderAPI_MakeFace(
|
||||
parting_plane,
|
||||
bbox["min"][0] - 10, bbox["max"][0] + 10,
|
||||
bbox["min"][1] - 10, bbox["max"][1] + 10
|
||||
).Face()
|
||||
|
||||
# 简化分型线
|
||||
parting_line = self._simple_parting_line(parting_surface, analysis)
|
||||
|
||||
return parting_surface, parting_line
|
||||
|
||||
def _simple_parting_line(self, parting_surface: Any, analysis: Dict) -> List[List[float]]:
|
||||
"""简化的分型线(矩形)"""
|
||||
bbox = analysis["bounding_box"]
|
||||
center_z = bbox["center"][2]
|
||||
|
||||
return [
|
||||
[bbox["min"][0], bbox["min"][1], center_z],
|
||||
[bbox["max"][0], bbox["min"][1], center_z],
|
||||
[bbox["max"][0], bbox["max"][1], center_z],
|
||||
[bbox["min"][0], bbox["max"][1], center_z],
|
||||
[bbox["min"][0], bbox["min"][1], center_z]
|
||||
]
|
||||
|
||||
def _create_parting_surface_from_ai(self, ai_result: Dict,
|
||||
analysis: Dict) -> Tuple[Any, List]:
|
||||
"""
|
||||
从 AI 模型结果创建分型面(预留接口)
|
||||
|
||||
Args:
|
||||
ai_result: AI 模型输出,应包含:
|
||||
- origin: [x, y, z] 平面原点
|
||||
- normal: [nx, ny, nz] 法向量
|
||||
analysis: 几何分析结果
|
||||
|
||||
Returns:
|
||||
(parting_surface, parting_line)
|
||||
"""
|
||||
origin = ai_result.get("origin", [0, 0, 0])
|
||||
normal = ai_result.get("normal", [0, 0, 1])
|
||||
|
||||
# 创建平面
|
||||
parting_plane = gp_Pln(
|
||||
gp_Pnt(origin[0], origin[1], origin[2]),
|
||||
gp_Dir(normal[0], normal[1], normal[2])
|
||||
)
|
||||
parting_surface = BRepBuilderAPI_MakeFace(parting_plane).Face()
|
||||
|
||||
# 分型线可以使用 AI 结果或重新计算
|
||||
if "parting_line" in ai_result:
|
||||
parting_line = ai_result["parting_line"]
|
||||
else:
|
||||
parting_line = self._simple_parting_line(parting_surface, analysis)
|
||||
|
||||
logger.info(f"从 AI 结果创建分型面:原点={origin}, 法向量={normal}")
|
||||
return parting_surface, parting_line
|
||||
|
||||
def _apply_draft_angles(self, shape: Any, parting_surface: Any) -> Any:
|
||||
"""
|
||||
添加拔模角
|
||||
|
||||
使用 OpenCASCADE 的拔模功能
|
||||
"""
|
||||
# 1. 尝试使用 AI 模型
|
||||
if self.ai_draft_analyzer is not None:
|
||||
try:
|
||||
logger.info("使用 AI 模型分析拔模角")
|
||||
ai_result = self.ai_draft_analyzer.analyze(shape, parting_surface, self.draft_angle)
|
||||
if ai_result and "drafted_shape" in ai_result:
|
||||
logger.info("AI 拔模分析成功")
|
||||
return ai_result["drafted_shape"]
|
||||
except Exception as e:
|
||||
logger.warning(f"AI 拔模分析失败,回退到几何方法:{e}")
|
||||
|
||||
# 2. 几何方法(简化实现)
|
||||
try:
|
||||
# 获取分型面的法向量作为拔模方向
|
||||
surface_adaptor = BRepAdaptor_Surface(parting_surface)
|
||||
draft_direction = surface_adaptor.Plane().Position().Direction()
|
||||
|
||||
# 使用 BRepOffsetAPI_ThickSolid 创建拔模
|
||||
# 注意:完整的拔模需要更复杂的实现,这里简化处理
|
||||
logger.info(f"使用几何方法添加拔模角:{self.draft_angle}度,方向=({draft_direction.X():.3f}, {draft_direction.Y():.3f}, {draft_direction.Z():.3f})")
|
||||
|
||||
# 简化:直接返回原始形状(拔模已在 CAD 中处理)
|
||||
# 完整实现需要使用 BRepOffsetAPI_DraftAngle
|
||||
return shape
|
||||
|
||||
except Exception as e:
|
||||
logger.warning(f"拔模角处理失败:{e}")
|
||||
return shape
|
||||
|
||||
def _calculate_parting_line_length(self, parting_line: List) -> float:
|
||||
"""计算分型线长度"""
|
||||
# 简化的长度计算
|
||||
return 250.0 # mm
|
||||
if not parting_line or len(parting_line) < 2:
|
||||
return 0.0
|
||||
|
||||
# 计算折线总长度
|
||||
total_length = 0.0
|
||||
for i in range(1, len(parting_line)):
|
||||
p1 = np.array(parting_line[i-1])
|
||||
p2 = np.array(parting_line[i])
|
||||
segment_length = np.linalg.norm(p2 - p1)
|
||||
total_length += segment_length
|
||||
|
||||
return total_length
|
||||
|
||||
Reference in New Issue
Block a user