146 行
6.3 KiB
Python
146 行
6.3 KiB
Python
# -*- coding: utf-8 -*-
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u"""直接量 PCIE 插槽模型的**槽腔**尺寸（不靠碰撞反推）。
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做法：枚举塑料体的所有平面面，挑法线沿 ±Z 的，按 z 分层列出 x/y 跨度与面积。
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· 顶面 = z 最高的朝上平面
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· 槽腔底 = z 明显低于顶面、x 跨度大、y 跨度窄 的朝上平面
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⇒ 一次读出**腔长**（对比舌头 36.0）与**腔宽**（对比 STEP 板厚 1.67 / 标称 1.6）。
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⛔ 全程不碰 IInterferenceDetectionMgr —— 重度用它之后会丢 ROT 注册（NOTES §24）。
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"""
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import io, re, subprocess, sys, time
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sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
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import pythoncom
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import win32com.client as wc
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BASE_STEP = r'D:\DCDC\新建文件夹\3D_BASE-PCB_2026-09-12.step'
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def prop(o, name):
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u"""取 0 参成员。动态派发下多数是属性，但有例外（§17 `GetMathUtility`、
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§25 `GetFaces`）——取回来若是个 **python 方法对象**就再调一次。
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⛔ 不能用 `callable()` 判断：COM 对象一律 callable（§2），那样会把
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子对象当函数调，报"找不到成员"。只认 python 侧的方法类型。"""
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v = getattr(o, name)
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if type(v).__name__ in ('method', 'function', 'builtin_function_or_method'):
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return v()
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return v
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def sw_pids():
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out = subprocess.run(['tasklist', '/FI', 'IMAGENAME eq SLDWORKS.EXE', '/FO', 'CSV', '/NH'],
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capture_output=True, text=True, encoding='gbk', errors='ignore').stdout
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return sorted(re.findall(r'"SLDWORKS\.exe","(\d+)"', out, re.I))
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app = None
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try:
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app = wc.GetActiveObject('SldWorks.Application')
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print(u'✅ 复用现有实例（文档数 %s）' % app.GetDocumentCount)
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except Exception as e:
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print(u'✗ 连不上 (%s) → 自愈' % str(e)[:50])
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if sw_pids():
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subprocess.run(['taskkill', '/F', '/IM', 'SLDWORKS.exe'], capture_output=True)
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time.sleep(4)
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for k in range(20):
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try:
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app = wc.Dispatch('SldWorks.Application'); app.Visible = True
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_ = app.RevisionNumber; break
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except Exception:
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if k == 19: raise
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time.sleep(5)
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if app.GetDocumentCount == 0:
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print(u'导入底板 STEP…')
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t0 = time.time()
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data = app.GetImportFileData(BASE_STEP)
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err = wc.VARIANT(pythoncom.VT_BYREF | pythoncom.VT_I4, 0)
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app.LoadFile4(BASE_STEP, 'r', data, err)
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print(u' err=%s %.1fs 文档数 %s' % (err.value, time.time() - t0, app.GetDocumentCount))
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part = None
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for d in app.GetDocuments:
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try:
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if d.GetType == 1 and 'PCIE' in d.GetTitle.upper() and '64P11L' in d.GetTitle.upper():
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part = d; break
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except Exception:
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pass
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if part is None:
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print(u'⛔ 没找到插槽零件'); sys.exit(1)
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print(u'\n零件: %s' % part.GetTitle)
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bb = [v * 1000 for v in part.GetPartBox(True)]
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print(u'包围盒 x %.2f~%.2f y %.2f~%.2f z %.2f~%.2f'
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% (bb[0], bb[3], bb[1], bb[4], bb[2], bb[5]))
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bodies = part.GetBodies2(0, True)
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print(u'实体 %d 个' % len(bodies))
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rows = []
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for bi, bd in enumerate(bodies):
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body = bd if hasattr(bd, '_oleobj_') else wc.Dispatch(bd)
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try:
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faces = prop(body, 'GetFaces')
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except Exception as e:
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print(u' 实体%d GetFaces 失败 %s' % (bi, str(e)[:70])); continue
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try:
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vol = body.GetMassProperties(1.0)[3] * 1e9
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except Exception:
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vol = float('nan')
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try:
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bx = [v * 1000 for v in prop(body, 'GetBodyBox')]
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bxs = u'x %.2f~%.2f y %.2f~%.2f z %.2f~%.2f' % (bx[0], bx[3], bx[1], bx[4], bx[2], bx[5])
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except Exception:
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bxs = u'?'
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print(u' 实体%d: %d 个面, 体积 %.1f mm^3, %s' % (bi, len(faces), vol, bxs))
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for f in faces:
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face = f if hasattr(f, '_oleobj_') else wc.Dispatch(f)
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try:
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surf = prop(face, 'GetSurface')
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if not prop(surf, 'IsPlane'):
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continue
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p = list(prop(surf, 'PlaneParams'))
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nz = p[2]
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if abs(nz) < 0.99:
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continue
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fb = [v * 1000 for v in prop(face, 'GetBox')]
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rows.append((round(fb[5], 3), nz, prop(face, 'GetArea') * 1e6,
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fb[0], fb[3], fb[1], fb[4], bi))
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except Exception:
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continue
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print(u'\n=== 法线沿 ±Z 的平面（z 从高到低）===')
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print(u' z 朝向 面积mm^2 x 跨度 y 跨度')
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rows.sort(reverse=True)
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for z, nz, area, x0, x1, y0, y1, bi in rows[:30]:
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print(u' %7.3f %+5.1f %9.2f %7.2f~%7.2f(%5.2f) %6.2f~%6.2f(%5.2f) 体%d'
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% (z, nz, area, x0, x1, x1 - x0, y0, y1, y1 - y0, bi))
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print(u' …共 %d 个朝 ±Z 的平面' % len(rows))
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up = [r for r in rows if r[1] > 0]
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if not up:
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print(u'\n⛔ 一个朝上的平面都没有'); sys.exit()
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top = up[0]
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print(u'\n塑料体顶面 z=%.3f（面积 %.1f mm^2）' % (top[0], top[2]))
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# ⛔⛔ 下面这个"挑面积最大的候选面当腔底"的启发式**不可靠**，实测选出了
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# x -4.11~17.54 这种既不对称也不居中的局部面，并据此打印出"舌头要收窄 14.35"
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# 的错误结论。真正的开口尺寸要用 `slot_opening_measure.py`（量顶面内环）。
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# 这里保留只为看分层概况，**不要拿它的数当结论**。
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print(u'\n⚠ 以下"腔底"是启发式猜的，已知会选错面 —— 只作参考，'
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u'开口尺寸以 slot_opening_measure.py 为准。')
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cav = [r for r in up if r[0] < top[0] - 0.5 and (r[4] - r[3]) > 10 and (r[6] - r[5]) < 4]
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if cav:
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c = max(cav, key=lambda r: r[2])
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L, W, D = c[4] - c[3], c[6] - c[5], top[0] - c[0]
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print(u'\n🎯 槽腔底：z=%.3f' % c[0])
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print(u' 腔深 = %.2f − %.2f = **%.2f mm** ← 这就是一直缺的 d' % (top[0], c[0], D))
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print(u' 腔长 x %.2f~%.2f = **%.2f mm** 舌头 36.00 ⇒ %s'
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% (c[3], c[4], L, u'✅ 插得进（余量 %.2f）' % (L - 36.0) if L > 36.0
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else u'⛔ **插不进，舌头要收窄 %.2f 以上**' % (36.0 - L)))
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print(u' 腔宽 y %.2f~%.2f = **%.2f mm** STEP 板厚 1.67 ⇒ %s'
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% (c[5], c[6], W, u'✅ 进得去' if W > 1.67
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else u'⚠ 模型腔宽 < 1.67，这多半是**模型按 1.6 标称建的**，实物无碍'))
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else:
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print(u'\n⚠ 没有符合"腔底"特征的朝上平面（z 低于顶面、x 跨度 >10、y 跨度 <4）')
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print(u' ⇒ 腔底可能不是平面，或这个模型确实没建腔。')
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