x
This commit is contained in:
+41
-114
@@ -2,7 +2,7 @@ from typing import Dict, List, Any, Tuple, Optional
|
||||
import math
|
||||
import numpy as np
|
||||
from OCC.Core.BRepOffsetAPI import BRepOffsetAPI_DraftAngle
|
||||
from OCC.Core.BRepAlgoAPI import BRepAlgoAPI_Cut, BRepAlgoAPI_Section, BRepAlgoAPI_Common, BRepAlgoAPI_Fuse
|
||||
from OCC.Core.BRepAlgoAPI import BRepAlgoAPI_Cut, BRepAlgoAPI_Section, BRepAlgoAPI_Common
|
||||
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakeFace, BRepBuilderAPI_Transform
|
||||
from OCC.Core.BRepPrimAPI import BRepPrimAPI_MakeBox, BRepPrimAPI_MakeHalfSpace
|
||||
from OCC.Core.gp import gp_Pln, gp_Dir, gp_Pnt, gp_Trsf, gp_Ax2
|
||||
@@ -226,14 +226,14 @@ class BaseMoldGenerator:
|
||||
|
||||
def _split_cavity_core(self, shape: Any, parting_surface: Any, margin: int = 20) -> Tuple[Any, Any]:
|
||||
"""
|
||||
分离型腔和型芯 — 完全嵌入 + 突出贴合方式
|
||||
用分型面将模具块切分为A板（上模/型腔）和B板（下模/型芯），
|
||||
然后从每个板中减去产品形状的对应部分。
|
||||
|
||||
流程：
|
||||
1. 创建完整模具块（产品包围盒 + 全方向余量）
|
||||
2. 型腔（凹模）= 模具块 - 产品 → 产品完全嵌入型腔块中
|
||||
3. 型芯（凸模）= 产品形状突出体 → 从芯块面突出贴合
|
||||
|
||||
不再使用分型面中间切开产品的方式。
|
||||
2. 用分型面将模具块切分为 A板 和 B板
|
||||
3. A板 - 产品 = 型腔（凹模）
|
||||
4. B板 - 产品 = 型芯（凸模）
|
||||
"""
|
||||
try:
|
||||
bbox = Bnd_Box()
|
||||
@@ -247,110 +247,40 @@ class BaseMoldGenerator:
|
||||
mold_ymax = ymax + margin
|
||||
mold_zmax = zmax + margin
|
||||
|
||||
cavity_block = BRepPrimAPI_MakeBox(
|
||||
mold_block = BRepPrimAPI_MakeBox(
|
||||
gp_Pnt(mold_xmin, mold_ymin, mold_zmin),
|
||||
gp_Pnt(mold_xmax, mold_ymax, mold_zmax)
|
||||
).Shape()
|
||||
|
||||
cavity = self._subtract_product_from_plate(cavity_block, shape, "型腔")
|
||||
if cavity is None:
|
||||
logger.warning("型腔布尔减运算失败，使用原始模具块")
|
||||
cavity = cavity_block
|
||||
parting_plane = self._get_parting_plane(parting_surface, shape)
|
||||
if parting_plane is None:
|
||||
logger.warning("无法提取分型面平面，使用回退方案")
|
||||
center_z = (zmin + zmax) / 2
|
||||
parting_plane = gp_Pln(gp_Pnt(0, 0, center_z), gp_Dir(0, 0, 1))
|
||||
|
||||
parting_normal = self._extract_parting_normal(parting_surface)
|
||||
a_plate, b_plate = self._split_mold_block_by_plane(mold_block, parting_plane)
|
||||
|
||||
core = self._build_protruding_core(
|
||||
shape, cavity_block,
|
||||
mold_xmin, mold_ymin, mold_zmin,
|
||||
mold_xmax, mold_ymax, mold_zmax,
|
||||
xmin, ymin, zmin, xmax, ymax, zmax,
|
||||
parting_normal
|
||||
)
|
||||
if a_plate is not None and b_plate is not None:
|
||||
cavity = self._subtract_product_from_plate(a_plate, shape, "型腔(A板)")
|
||||
core = self._subtract_product_from_plate(b_plate, shape, "型芯(B板)")
|
||||
|
||||
logger.info("型腔/型芯分离完成（完全嵌入+突出贴合）")
|
||||
return cavity, core
|
||||
if cavity is not None and core is not None:
|
||||
logger.info("型腔/型芯分离完成（分型面切分+布尔减）")
|
||||
return cavity, core
|
||||
elif cavity is not None:
|
||||
logger.warning("型芯生成失败，使用产品形状")
|
||||
return cavity, shape
|
||||
elif core is not None:
|
||||
logger.warning("型腔生成失败，使用模具块")
|
||||
return mold_block, core
|
||||
|
||||
logger.warning("A/B板切分不完全，回退到原方案")
|
||||
return self._split_cavity_core_fallback(shape, mold_block)
|
||||
|
||||
except Exception as e:
|
||||
logger.error(f"型腔分离失败: {e}")
|
||||
return self._split_cavity_core_fallback(shape, None)
|
||||
|
||||
def _extract_parting_normal(self, parting_surface: Any) -> List[float]:
|
||||
"""从分型面提取法向量方向"""
|
||||
try:
|
||||
surface = BRepAdaptor_Surface(parting_surface)
|
||||
if surface.GetType() == 0:
|
||||
plane = surface.Plane()
|
||||
normal = plane.Axis().Direction()
|
||||
return [float(normal.X()), float(normal.Y()), float(normal.Z())]
|
||||
except Exception:
|
||||
pass
|
||||
return [0.0, 0.0, 1.0]
|
||||
|
||||
def _build_protruding_core(
|
||||
self,
|
||||
shape: Any,
|
||||
cavity_block: Any,
|
||||
mold_xmin: float, mold_ymin: float, mold_zmin: float,
|
||||
mold_xmax: float, mold_ymax: float, mold_zmax: float,
|
||||
xmin: float, ymin: float, zmin: float,
|
||||
xmax: float, ymax: float, zmax: float,
|
||||
parting_normal: List[float] = None,
|
||||
) -> Any:
|
||||
"""
|
||||
构建突出贴合式型芯。
|
||||
|
||||
型芯 = 底座平板 + 产品形状突出体。
|
||||
底座平板沿分型方向位于产品下方，产品形状融合在底座之上，
|
||||
与型腔的凹入形状完美贴合。
|
||||
"""
|
||||
nx, ny, nz = (parting_normal or [0.0, 0.0, 1.0])
|
||||
mold_min = [mold_xmin, mold_ymin, mold_zmin]
|
||||
mold_max = [mold_xmax, mold_ymax, mold_zmax]
|
||||
prod_min = [xmin, ymin, zmin]
|
||||
prod_max = [xmax, ymax, zmax]
|
||||
|
||||
base_p1 = list(mold_min)
|
||||
base_p2 = list(mold_max)
|
||||
|
||||
for i in range(3):
|
||||
prod_span = prod_max[i] - prod_min[i]
|
||||
overlap = max(prod_span * 0.03, 0.5)
|
||||
if parting_normal[i] > 0:
|
||||
base_p2[i] = prod_min[i] + overlap
|
||||
elif parting_normal[i] < 0:
|
||||
base_p1[i] = prod_max[i] - overlap
|
||||
|
||||
base_plate = None
|
||||
try:
|
||||
base_plate = BRepPrimAPI_MakeBox(
|
||||
gp_Pnt(base_p1[0], base_p1[1], base_p1[2]),
|
||||
gp_Pnt(base_p2[0], base_p2[1], base_p2[2])
|
||||
).Shape()
|
||||
logger.info("型芯底座平板构建完成")
|
||||
except Exception as e:
|
||||
logger.warning(f"底座平板构建失败: {e}")
|
||||
return shape
|
||||
|
||||
try:
|
||||
fuse_op = BRepAlgoAPI_Fuse(base_plate, shape)
|
||||
if fuse_op.IsDone():
|
||||
core = fuse_op.Shape()
|
||||
logger.info("型芯（底座+产品突出体）融合成功")
|
||||
return core
|
||||
except Exception as e:
|
||||
logger.warning(f"底座与产品融合失败: {e}")
|
||||
|
||||
try:
|
||||
cut_op = BRepAlgoAPI_Cut(cavity_block, shape)
|
||||
if cut_op.IsDone():
|
||||
logger.info("型芯通过布尔减回退构建")
|
||||
return cut_op.Shape()
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
logger.info("型芯最终回退为产品形状")
|
||||
return shape
|
||||
|
||||
def _get_parting_plane(self, parting_surface: Any, shape: Any) -> Optional[gp_Pln]:
|
||||
"""从分型面提取平面方程"""
|
||||
try:
|
||||
@@ -443,12 +373,9 @@ class BaseMoldGenerator:
|
||||
def _split_cavity_core_fallback(self, shape: Any,
|
||||
mold_block: Optional[Any] = None) -> Tuple[Any, Any]:
|
||||
"""
|
||||
分模回退方案：完全嵌入+突出贴合，不切分模具块。
|
||||
|
||||
1. 创建完整模具块 → 型腔 = 模具块 - 产品（产品完全嵌入）
|
||||
2. 型芯 = 产品形状突出体（突出贴合）
|
||||
分模回退方案：用边界框中心面作为分型面切分模具块。
|
||||
"""
|
||||
logger.warning("使用分模回退方案（完全嵌入+突出贴合）")
|
||||
logger.warning("使用分模回退方案")
|
||||
|
||||
try:
|
||||
bbox = Bnd_Box()
|
||||
@@ -462,19 +389,19 @@ class BaseMoldGenerator:
|
||||
gp_Pnt(xmax + margin, ymax + margin, zmax + margin)
|
||||
).Shape()
|
||||
|
||||
cavity = self._subtract_product_from_plate(mold_block, shape, "型腔(回退)")
|
||||
if cavity is None:
|
||||
cavity = mold_block
|
||||
center_z = (zmin + zmax) / 2
|
||||
parting_plane = gp_Pln(gp_Pnt(0, 0, center_z), gp_Dir(0, 0, 1))
|
||||
a_plate, b_plate = self._split_mold_block_by_plane(mold_block, parting_plane)
|
||||
|
||||
core = self._build_protruding_core(
|
||||
shape, mold_block,
|
||||
xmin - margin, ymin - margin, zmin - margin,
|
||||
xmax + margin, ymax + margin, zmax + margin,
|
||||
xmin, ymin, zmin, xmax, ymax, zmax
|
||||
)
|
||||
if a_plate is not None and b_plate is not None:
|
||||
cavity = self._subtract_product_from_plate(a_plate, shape, "型腔(回退)")
|
||||
core = self._subtract_product_from_plate(b_plate, shape, "型芯(回退)")
|
||||
if cavity is not None and core is not None:
|
||||
logger.info("回退方案型腔/型芯分离完成")
|
||||
return cavity, core
|
||||
|
||||
logger.info("回退方案型腔/型芯分离完成")
|
||||
return cavity or mold_block, core
|
||||
cavity = self._subtract_product_from_plate(mold_block, shape, "型腔(兜底)")
|
||||
return cavity or mold_block, shape
|
||||
|
||||
except Exception as e:
|
||||
logger.error(f"分模回退方案失败: {e}")
|
||||
|
||||
Reference in New Issue
Block a user