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CADENA Reconstructs 3D Meshes as Parametric CAD Step by Step, Ships 3,396-Part Industrial BenchmarkCADENA逐步重建参数化CAD：发布3396件工业零件基准CADENA-Bench
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- CADENA reconstructs a 3D mesh into an editable parametric CAD program by adding one operation at a time, executing the partial program after each step and comparing it against the target so the model always sees what remains to be built — mirroring how human engineers work feature by feature.
- The team also released CADENA-Bench, built from 3,396 real mechanical parts drawn from three industrial corpora, de-duplicated and grouped into six part families with results reported per family so weaknesses don't average away; every learned baseline loses roughly half its score moving from DeepCAD to real parts, and CADENA outperforms prior methods on DeepCAD, Fusion 360, MCB and CADENA-Bench.
- For automotive engineering, where scanned or legacy component geometry must routinely be converted back into editable CAD, this stepwise, verifiable reverse-engineering approach points toward faster, more reliable part reconstruction and design-optimization workflows.
- CADENA将3D网格逐步反向工程为可编辑的参数化CAD程序，每次只新增一步操作、执行当前的部分程序并与目标形状比对，使模型始终清楚还有哪些部分未建模，其工作方式接近工程师逐特征建模的流程。
- 团队同时发布CADENA-Bench，由来自三个工业数据源、去重后按六大零件族分类的3396个真实机械零件组成，并按族别分别报告结果以避免弱点被平均掉；所有已有学习型基线从DeepCAD迁移到真实零件后得分平均下降近一半，而CADENA在DeepCAD、Fusion 360、MCB及CADENA-Bench上均优于现有方法。
- 在汽车工程中，扫描或历史零件几何常需转换回可编辑CAD模型，这种可逐步验证的反向工程方法有望加速零件重建与设计优化流程。