178 行
5.9 KiB
Python
178 行
5.9 KiB
Python
# -*- coding: utf-8 -*-
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u"""给外壳件加**外轮廓圆角**（用户 2026-09-13 要求）。v2 重写。
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⛔ v1 失败的真因（不是 API 坏了）：
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最小实验（纯长方体 12 条边）倒 4 条竖边 → 成功、直方图 `{3.0: 4}`。
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但真实零件上：托盘 60 条边里选了 12 条、端板 34 条里选了 8 条，
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`FeatureFillet3` 一律返回 **None**。
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共同点是**选中的边里混进了做不出来的**：
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· 托盘：USB-C 缺口的内角边 —— 缺口只有 4.2 深，R3 在窄槽内角会自相交；
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· 端板：L 脚与板面的交线 —— 同理超出可行范围。
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SolidWorks 对这种"整批里有一条做不出"的情况**整批放弃**，还不报错。
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✅ v2 的三条对策：
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1. **只倒外轮廓的角**：按实体包围盒筛，边的两个端点必须都落在包围盒的角上，
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这样自动排除所有内部缺口/开口/台阶产生的边。
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2. **逐条单独倒**：一条失败不拖垮其余，且能精确报出是哪条边做不出来。
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3. **失败自动降半径**：R3 → R2 → R1.5 → R1 依次重试。
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判据仍是**圆柱面半径直方图**（包围盒对圆角没有分辨力）。
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用法：python add_fillets.py <零件文件名> [半径] [轴]
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"""
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import io
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import os
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import sys
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sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8', write_through=True)
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import pythoncom
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import win32com.client as wc
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DIR = u'D:\\DCDC\\新建文件夹\\5blades\\'
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EMPTY = wc.VARIANT(pythoncom.VT_DISPATCH, None)
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fname = sys.argv[1] if len(sys.argv) > 1 else 'Tray_v7.SLDPRT'
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RAD0 = float(sys.argv[2]) if len(sys.argv) > 2 else 3.0
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AXIS = (sys.argv[3] if len(sys.argv) > 3 else 'z').lower()
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AI = {'x': 0, 'y': 1, 'z': 2}[AXIS]
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PATH = DIR + fname
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RETRY = [RAD0, 2.0, 1.5, 1.0]
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def prop(o, n):
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v = getattr(o, n)
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return v() if type(v).__name__ in ('method', 'function', 'builtin_function_or_method') else v
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def D(x):
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return x if hasattr(x, '_oleobj_') else wc.Dispatch(x)
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def P(*a):
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print(*a)
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def M(v):
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return v / 1000.0
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app = wc.GetActiveObject('SldWorks.Application')
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if not os.path.exists(PATH):
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P(u'⛔ 文件不存在 %s' % PATH); sys.exit(2)
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part = None
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for d in app.GetDocuments or []:
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try:
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if (prop(d, 'GetPathName') or '').lower() == PATH.lower():
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part = d
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break
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except Exception:
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pass
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if part is None:
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err = wc.VARIANT(pythoncom.VT_BYREF | pythoncom.VT_I4, 0)
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warn = wc.VARIANT(pythoncom.VT_BYREF | pythoncom.VT_I4, 0)
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part = app.OpenDoc6(PATH, 1, 0, '', err, warn)
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P(u'打开 %s err=%s' % (fname, err.value))
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if part is None:
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P(u'⛔ 打不开'); sys.exit(3)
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e0 = wc.VARIANT(pythoncom.VT_BYREF | pythoncom.VT_I4, 0)
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app.ActivateDoc3(prop(part, 'GetTitle'), False, 0, e0)
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part = app.ActiveDoc
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fm = part.FeatureManager
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P(u'零件 %s，目标 R%.1f，沿 %s 轴' % (prop(part, 'GetTitle'), RAD0, AXIS))
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def body():
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b = part.GetBodies2(0, True) or []
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return D(b[0]) if b else None
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def cyl_hist():
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bd = body()
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if bd is None:
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return {}
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rs = {}
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for f in prop(bd, 'GetFaces'):
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s = prop(D(f), 'GetSurface')
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if prop(s, 'IsCylinder'):
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r = round(list(prop(s, 'CylinderParams'))[6] * 1000, 2)
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rs[r] = rs.get(r, 0) + 1
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return dict(sorted(rs.items()))
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before = cyl_hist()
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bx = [round(v * 1000, 3) for v in prop(body(), 'GetBodyBox')]
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P(u'包围盒 %s' % bx)
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P(u'倒角前 %s' % before)
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# 另外两根轴（外轮廓角要在这两根轴上都处于极值）
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oth = [i for i in range(3) if i != AI]
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def at_corner(p):
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u"""该点在另外两根轴上是否都落在包围盒边界（即外轮廓的角）"""
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for i in oth:
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if abs(p[i] - bx[i]) > 0.01 and abs(p[i] - bx[i + 3]) > 0.01:
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return False
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return True
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cand = []
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for e in prop(body(), 'GetEdges'):
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E = D(e)
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try:
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p0 = [round(v * 1000, 3) for v in prop(D(prop(E, 'GetStartVertex')), 'GetPoint')]
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p1 = [round(v * 1000, 3) for v in prop(D(prop(E, 'GetEndVertex')), 'GetPoint')]
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except Exception:
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continue
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same = [i for i in range(3) if abs(p0[i] - p1[i]) < 1e-6]
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if len(same) != 2 or AI in same:
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continue
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if abs(p0[AI] - p1[AI]) < 1e-6:
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continue
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if not (at_corner(p0) and at_corner(p1)):
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continue # ⇐ 关键：排除缺口/台阶产生的内部边
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cand.append((E, p0))
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P(u'外轮廓上沿 %s 的直边 = %d 条（v1 不加这一层筛选时是 12 / 8 条，含做不出的内角）'
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% (AXIS, len(cand)))
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for _, p0 in cand:
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P(u' 角 (%.2f, %.2f)' % (p0[oth[0]], p0[oth[1]]))
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if not cand:
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P(u'⛔ 没有可倒的外轮廓边'); sys.exit(4)
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done, failed = 0, []
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for idx, (E, p0) in enumerate(cand):
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ok = False
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for r in RETRY:
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part.ClearSelection2(True)
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E.Select4(False, EMPTY)
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if part.SelectionManager.GetSelectedObjectCount2(-1) != 1:
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break
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try:
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feat = fm.FeatureFillet3(195, M(r), 0, 0, 0, 0, 0,
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None, None, None, None, None, None, None)
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except Exception as ex:
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feat = None
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if feat:
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P(u' 边%d 角(%.2f, %.2f) → R%.1f ✅' % (idx, p0[oth[0]], p0[oth[1]], r))
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done += 1
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ok = True
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break
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if not ok:
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P(u' 边%d 角(%.2f, %.2f) → 四档半径都做不出 ⛔' % (idx, p0[oth[0]], p0[oth[1]]))
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failed.append(idx)
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after = cyl_hist()
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P(u'\n倒角后 %s' % after)
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P(u'成功 %d / %d 条%s' % (done, len(cand), (u'，失败 %s' % failed) if failed else u''))
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if done:
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e1 = wc.VARIANT(pythoncom.VT_BYREF | pythoncom.VT_I4, 0)
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w1 = wc.VARIANT(pythoncom.VT_BYREF | pythoncom.VT_I4, 0)
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part.Extension.SaveAs3(PATH, 0, 1, EMPTY, EMPTY, e1, w1)
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P(u'存盘 err=%s %.0f KB' % (e1.value, os.path.getsize(PATH) / 1024.0))
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else:
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P(u'⛔ 一条都没倒成，不存盘')
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P(u'⚠ 零件保持打开')
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