Journal of Northeastern University(Natural Science) ›› 2025, Vol. 46 ›› Issue (5): 87-94.DOI: 10.12068/j.issn.1005-3026.2025.20230320

• Mechanical Engineering • Previous Articles     Next Articles

Reliability Optimization of CNC Machine Tool Rotary Tables

Xian-zhen HUANG1,2(), Ming-fei MA1, Zhi-yuan JIANG1, Kai-hui QIU3   

  1. 1.School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110819,China
    2.Key Laboratory of Vibration and Control of Aero-Propulsion Systems,Ministry of Education,Northeastern University,Shenyang 110819,China
    3.Wuhan Iron & Steel Co. Ltd,Wuhan 430080,China.
  • Received:2023-11-30 Online:2025-05-15 Published:2025-08-07
  • Contact: Xian-zhen HUANG

Abstract:

To ensure the stiffness of the rotary table while minimizing its weight and enhancing its reliability, a reliability-based design optimization (RBDO) method is proposed for the rotary table. This method takes into account the invariance of the assembly relationships between the internal structures of the rotary table, and also incorporates the random uncertainty factors. Through sensitivity analysis, size parameters that significantly affect the performance of the rotary table are identified, and optimization design is conducted on these parameters. Unlike the traditional optimization methods, a Kriging surrogate model is applied to replace time-consuming finite element analysis. Furthermore, an efficient meta-heuristic algorithm is introduced during the optimization process to address the proposed RBDO problem. Subsequently, the impact of various parameter configurations on the deformation reliability of the rotary table is investigated. Finally, the effectiveness and robustness of the proposed optimization method are validated through practical examples.

Key words: machine tool rotary table, stiffness, Kriging surrogate model, reliability assessment, reliability optimization

CLC Number: