arXiv AI

From Documented Strengths to Force Limits: Material-Informed Robotic Insertion for Construction Assembly

arXiv AI
Aug 18

Large Language Models and their Awareness of Mechanics and Spatial Geometry

arXiv:2608. 14615v1 Announce Type: new Abstract: Large Language Models (LLMs) perform well on established code-generation and mathematical-reasoning benchmarks, but their capabilities in mechanics and spatial geometry, here denoted as mechanical engineering awareness, has not been quantified systematically.

By Johannes Gerstmayr, Sebastian Weyrer, Tobias M\"oltner, Peter Manzl, Michael Pieber
arXiv Computation and Language
Sep 4

RealCADBench: Benchmarking Parametric CAD Modeling from Industrial Design Intents

RealCADBench is a new benchmark for evaluating intent‑to‑program parametric CAD modeling, featuring 12,632 tasks drawn from 19 factory‑automation categories and covering text, 2D drawings, product photos, and rendered images for both Part and Assembly modeling. The study reports results on a 1,770‑task evaluation slice, using metrics such as executability, Solid IoU, Surface IoU, and a rubric‑based visual‑semantic identity Judge. Across nine standalone and six frontier‑scale large models, no single model dominates all four metrics, highlighting diverse strengths and failure modes like missing fine structures and incorrect assembly placement.

By JoyIndustrial VisCAD Team, Linxin Cai, Qiuhe Hong, Zhichao Huang, Guanlin Li, Zongzhen Li, Hongsen Liu, Yichen Long, Wei Wang, Yuchen Wang, Dongyue Yang, Huimu Yu, Xianwen Zhong
arXiv AI
Jul 1

Embodied CAD: Solver-Grounded LLM Agents for Parametric B-Rep Assembly Modeling

arXiv:2606. 31252v1 Announce Type: new Abstract: Large language models can write plausible CAD scripts, but reliable industrial CAD modeling requires more than syntactically valid code: every feature, placement, and assembly relation must be accepted by an exact geometric kernel while remaining editable as parametric boundary representation geometry.

By Fumin Liu, Haoyu Zhou, Fei Hao, Lin Yang
arXiv Computation and Language
Sep 4

VisCAD: A Foundation Model Suite with Multimodal Industrial CAD Intelligence

VisCAD is a foundation model suite that tackles AI-assisted computer-aided design for industrial products, covering both part-level and assembly-level generation. Its core component, VisCAD‑M1, is a 27B model trained for part-level design generation and outperforms existing models on PubCADBench and RealCADBench, achieving a part-level score of 0.5540 and reaching 0.5797 when used as a test-time verifier. VisCAD also offers a domain-specific harness that improves complex assembly generation compared to general-purpose harnesses, showing quantitative and qualitative advantages.

By JoyIndustrial VisCAD Team, Linxin Cai, Qiuhe Hong, Zhichao Huang, Guanlin Li, Hongsen Liu, Ziqi Liu, Yichen Long, Luya Wang, Yuchen Wang, Wenxiang Wu, Huimu Yu, Ning Zhang
arXiv Statistics ML
Sep 15

Harnessing human expertise for high-precision robotic assembly in industrialized construction: A sample-efficient installer-in-the-loop interactive reinforcement learning framework

arXiv:2609.13234v1 Announce Type: cross Abstract: Industrialized construction imposes stringent precision requirements on robotic assembly of modular components such as prefabricated window units. In...

By Zekai Jin, Huiguang Wang, Xiaoning Sun, Yi Shao
arXiv AI
Sep 18

Kinematics-Grounded Agentic AI for Robotic Additive Manufacturing Process Planning

The paper introduces Kinematics-Grounded Agentic AI for Robotic Additive Manufacturing (A‑RAM), a framework that transforms user intent and part files into execution‑ready plans for robotic AM. It uses a large language model to interpret manufacturing goals, a deterministic Planning Agent to generate search workflows, and domain tools to evaluate slicing, placement, inverse kinematics, trajectory timing, Joint‑6 jerk, and extrusion. Experiments on a six‑axis robotic‑arm AM cell show that A‑RAM can reduce maximum Joint‑6 jerk by up to 53.5 % and mean absolute Joint‑6 jerk by 48.3 %, while also shortening motion‑plan completion times and extrusion paths.

By Jingzhan Ge, Ruimin Chen, Azadeh Haghighi, Jiong Tang, Farhad Imani
arXiv Computation and Language
Sep 22

CCTU: A Benchmark for Tool Use under Complex Constraints

CCTU is a new benchmark designed to evaluate large language models (LLMs) on their ability to use tools under complex constraints. It includes 200 test cases that average seven constraint types and 4,700‑token prompts, covering resource, behavior, toolset, and response dimensions. An executable validation module performs step‑level checks, and nine state‑of‑the‑art LLMs were tested, revealing that none exceed a 20% task completion rate when strict constraints are enforced, with frequent violations and limited self‑refinement.

By Junjie Ye, Guoqiang Zhang, Wenjie Fu, Zelin Li, Tao Gui, Qi Zhang, Xuanjing Huang
Hugging Face Trending Papers
5d ago

On the Numerical Reliability of Differentiable Physics-Based Optimization for Robotic Material Manipulation

The paper investigates the numerical reliability of gradients in differentiable physics-based optimization for robotic material manipulation. Using two Material Point Method benchmarks, it identifies three key issues: GPU many-to-one sums that alter gradient signs, reduced reliability of finite-difference checks for long rollouts, and the impact of observation and loss definitions on optimization outcomes. The study recommends reproducible accumulation, finite-difference validation, and explicit objective reporting to improve robustness in robotic optimization.