skill：solidworks-assembly 实测笔记与脚本、easyeda-sch-geometry 补充
Co-Authored-By: Claude Opus 5.5 <[email protected]>
这个提交包含在：
zhou yang
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# -*- coding: utf-8 -*-
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u"""量 PCIE 插槽的**可插入深度** —— 卡降到哪里会被挡住。
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限制插入深度的有两个独立约束，必须分开算（很容易只算一个就下结论）：
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1. **槽底**：开口区域内最高的朝上平面。
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2. **防呆键筋**：键筋从顶面往下伸多深。刀片缺口只有 NOTCH_D=7.45 深 ——
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若键筋比缺口深，卡会被**键筋顶住**，先于槽底停下。
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开口尺寸由 slot_opening_measure.py 量得（顶面 z=10.000，x ±17.540，y −0.160~1.640，
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键筋 x −5.390~−4.610）。
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⛔ 全程不碰 IInterferenceDetectionMgr（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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TOP_Z = 10.000 # 塑料体顶面（零件本地）
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OPEN_X0, OPEN_X1 = -17.540, 17.540 # 开口 x
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OPEN_Y0, OPEN_Y1 = -0.160, 1.640 # 开口 y
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KEY_X0, KEY_X1 = -5.390, -4.610 # 防呆键筋 x
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BLADE_T = 1.67 # STEP 刀片板厚
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NOTCH_D = 7.45 # 刀片缺口深度（fp_edge.NOTCH_D）
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# 装配坐标换算（由槽3 反推）：assembly_z = part_z + 2.33；底板板面 assembly z = 1.67
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Z_OFF, BOARD_TOP = 2.33, 1.67
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def prop(o, name):
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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 D(x):
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return x if hasattr(x, '_oleobj_') else wc.Dispatch(x)
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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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data = app.GetImportFileData(BASE_STEP)
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err = wc.VARIANT(pythoncom.VT_BYREF | pythoncom.VT_I4, 0)
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t0 = time.time(); app.LoadFile4(BASE_STEP, 'r', data, err)
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print(u' err=%s %.1fs' % (err.value, time.time() - t0))
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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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shell, nmax = None, -1
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for bd in part.GetBodies2(0, True):
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b = D(bd)
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try:
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n = len(prop(b, 'GetFaces'))
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except Exception:
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continue
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if n > nmax:
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shell, nmax = b, n
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print(u'塑料壳：%d 个面\n' % nmax)
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# 刀片板料在通道里实际占据的 y 带（按开口中心对中）
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yc = (OPEN_Y0 + OPEN_Y1) / 2.0
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BY0, BY1 = yc - BLADE_T / 2.0, yc + BLADE_T / 2.0
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print(u'开口 y %.3f~%.3f（宽 %.2f）；刀片料占 y %.3f~%.3f（厚 %.2f）'
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% (OPEN_Y0, OPEN_Y1, OPEN_Y1 - OPEN_Y0, BY0, BY1, BLADE_T))
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def ovl(a0, a1, b0, b1):
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return min(a1, b1) - max(a0, b0)
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up_in_slot, key_faces, all_in = [], [], []
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for f in prop(shell, 'GetFaces'):
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fc = D(f)
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try:
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fb = [v * 1000 for v in prop(fc, 'GetBox')]
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except Exception:
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continue
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if fb[2] > TOP_Z - 1e-6: # 完全在顶面及以上，跳过
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continue
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# 与刀片料所占空间在 x/y 上有重叠的面
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if ovl(fb[0], fb[3], OPEN_X0, OPEN_X1) <= 1e-6:
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continue
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if ovl(fb[1], fb[4], BY0, BY1) <= 1e-6:
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continue
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nz = None
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try:
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s = prop(fc, 'GetSurface')
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if prop(s, 'IsPlane'):
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nz = list(prop(s, 'PlaneParams'))[2]
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except Exception:
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pass
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is_key = ovl(fb[0], fb[3], KEY_X0, KEY_X1) > 1e-6 and (fb[3] - fb[0]) < 2.0
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all_in.append((fb[5], fb, nz, is_key))
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if is_key:
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key_faces.append((fb[5], fb))
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elif nz is not None and nz > 0.99:
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up_in_slot.append((fb[5], fb))
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print(u'\n=== 通道内（与刀片料重叠）的面：按 z 顶端排序，前 14 ===')
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all_in.sort(reverse=True)
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for z, fb, nz, is_key in all_in[:14]:
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print(u' z顶 %7.3f z底 %7.3f x %8.3f~%8.3f y %7.3f~%7.3f 法线z=%s %s'
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% (fb[5], fb[2], fb[0], fb[3], fb[1], fb[4],
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('%+.2f' % nz) if nz is not None else ' 曲面', u'← 键筋' if is_key else u''))
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print(u'\n=== 约束 1：槽底（通道内最高的朝上平面，已排除键筋）===')
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if up_in_slot:
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up_in_slot.sort(reverse=True)
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z, fb = up_in_slot[0]
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d1 = TOP_Z - z
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print(u' 槽底 z = %.3f x %.3f~%.3f y %.3f~%.3f' % (z, fb[0], fb[3], fb[1], fb[4]))
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print(u' ⇒ 槽深（顶面到槽底）= %.2f − %.2f = **%.2f mm**' % (TOP_Z, z, d1))
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else:
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d1 = None
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print(u' ⛔ 通道内没有朝上平面')
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print(u'\n=== 约束 2：防呆键筋 ===')
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if key_faces:
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kz_top = max(k[0] for k in key_faces)
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kz_bot = min(k[1][2] for k in key_faces)
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kh = kz_top - kz_bot
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print(u' 键筋 z %.3f ~ %.3f，高 **%.2f mm**' % (kz_bot, kz_top, kh))
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print(u' 刀片缺口深 %.2f ⇒ %s' % (NOTCH_D,
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u'缺口比键筋深 %.2f，键筋不限制插入' % (NOTCH_D - kh) if NOTCH_D >= kh
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else u'**键筋比缺口深 %.2f，卡会被键筋顶住**' % (kh - NOTCH_D)))
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d2 = NOTCH_D if kh > NOTCH_D else None
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else:
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kh, d2 = None, None
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print(u' ⛔ 没识别出键筋面')
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print(u'\n=== 结论 ===')
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cands = [(u'槽底', d1), (u'防呆键筋', d2)]
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cands = [(n, v) for n, v in cands if v is not None]
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if cands:
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name, d = min(cands, key=lambda t: t[1])
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print(u' 实际可插入深度 d = **%.2f mm**（受「%s」限制）' % (d, name))
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print(u' ⇒ 刀片底边在底板局部 z = %.2f − %.2f = %.2f'
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% (TOP_Z + Z_OFF, d, TOP_Z + Z_OFF - d))
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print(u' ⇒ **刀片底边离底板板面 = %.2f mm**（板面 z=%.2f）'
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% (TOP_Z + Z_OFF - d - BOARD_TOP, BOARD_TOP))
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print(u' ⇒ 对照设计文档写的「抬高约 11 mm」：上限 10.66（完全不插），实际 %.2f'
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% (TOP_Z + Z_OFF - d - BOARD_TOP))
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