diff --git a/Tools/ModelTranslator/rizom_unwrap.py b/Tools/ModelTranslator/rizom_unwrap.py
index d3a2b3bb..d4e32eb6 100644
--- a/Tools/ModelTranslator/rizom_unwrap.py
+++ b/Tools/ModelTranslator/rizom_unwrap.py
@@ -50,3 +50,93 @@ def find_rizomuv(cli_arg=None, use_registry=True, default=DEFAULT_RIZOM):
         if os.path.isfile(p):
             return p
     raise RizomError("找不到 rizomuv.exe（尝试过：%s）" % "; ".join(cands))
+
+
+def _import_link(exe):
+    """从 RizomUV 安装目录动态引入官方 RizomUVLink 模块（随安装自带，MIT）。"""
+    link_dir = os.path.join(os.path.dirname(exe), "RizomUVLink")
+    if not os.path.isdir(link_dir):
+        raise RizomError("RizomUVLink 目录不存在：%s" % link_dir)
+    if link_dir not in sys.path:
+        sys.path.insert(0, link_dir)
+    try:
+        import RizomUVLink
+        return RizomUVLink
+    except Exception as e:   # pyd 与 Python 版本不匹配等
+        raise RizomError("RizomUVLink 导入失败：%s" % e)
+
+
+def _call(label, fn, params, timeout=TIMEOUT_S):
+    """带超时执行一条 RizomUV 命令；超时或 CZEx 抛 RizomError。"""
+    out, err = [], []
+
+    def run():
+        try:
+            out.append(fn(params))
+        except Exception as e:
+            err.append(e)
+
+    t = threading.Thread(target=run, daemon=True)
+    t.start()
+    t.join(timeout)
+    if t.is_alive():
+        raise RizomError("%s 超时（%ds）" % (label, timeout))
+    if err:
+        raise RizomError("%s 失败：%s" % (label, err[0]))
+    res = out[0] if out else None
+    # 部分命令（如 Load 文件不存在）不抛 CZEx，而是返回 {'Error': {'Msg':..,'Code':..}}
+    if isinstance(res, dict) and res.get("Error"):
+        raise RizomError("%s 失败：%s" % (label, res["Error"]))
+    return res
+
+
+def rizom_unwrap(fbx_path, exe, map_res=MAP_RES, padding_px=PADDING_PX):
+    """AutoSeam 全自动切缝 -> Unfold -> Pack -> 覆盖保存 fbx_path。失败抛 RizomError。"""
+    mod = _import_link(exe)
+    link = mod.CRizomUVLink()
+    try:
+        link.RunRizomUV(exePath=exe)
+    except Exception as e:
+        raise RizomError("RizomUV 启动失败（license/环境）：%s" % e)
+    fbx_abs = os.path.abspath(fbx_path)
+    pad_uv = float(padding_px) / map_res
+    try:
+        _call("Load", link.Load, {"File.Path": fbx_abs, "File.XYZ": True})
+        # AutoSeam：MOSAIC(QuasiDevelopable) + 切柄/连洞 + 防重叠后处理
+        _call("Select(AutoSeam)", link.Select, {
+            "PrimType": "Edge", "WorkingSet": "Visible",
+            "Select": True, "ResetBefore": True,
+            "Auto": {
+                "QuasiDevelopable": {"Developability": 0.5, "IslandPolyNBMin": 1,
+                                     "AreaMinRatio": 0.0, "FitCones": False,
+                                     "Straighten": True},
+                "HandleCutter": True,
+                "PipesCutter": True,
+                "SkeletonUnoverlap": {},
+                "FlatteningMode": 0,
+                "FlatteningUnfoldParams": {"BorderIntersections": True,
+                                           "TriangleFlips": True},
+                "StoreCoordsUVW": True,
+                "Quality": 0.5,
+            }})
+        _call("Cut", link.Cut, {"PrimType": "Edge", "WorkingSet": "Visible"})
+        _call("Unfold", link.Unfold, {"PrimType": "Edge", "WorkingSet": "Visible",
+                                      "BorderIntersections": True,
+                                      "TriangleFlips": True})
+        # Scaling.Mode=3 (AVG_RATIO_OF_GROUP)：官方文档建议首次展开后用该模式统一密度。
+        # 注：pyd docstring 写的 Global 包装层已被 2025 应用侧拒绝（exe 内 Pack schema
+        # 无 Global，打包属性直接为顶层参数），故扁平传参。
+        _call("Pack", link.Pack, {
+            "RootGroup": "RootGroup", "WorkingSet": "Visible",
+            "ProcessTileSelection": False, "RecursionDepth": 1,
+            "Translate": True,
+            "MapResolution": map_res,
+            "PaddingSize": pad_uv, "MarginSize": pad_uv,
+            "Rotate": {"Step": 90.0},
+            "Scaling": {"Mode": 3}})
+        _call("Save", link.Save, {"File.Path": fbx_abs})
+    finally:
+        try:
+            link.Quit({})
+        except Exception:
+            pass