Structural design optimization of moving component in CNC machine tool for energy saving

Congbo Li, Qianqian Ji, Daoguang Zhu, Yan Jin, Yan Lv, Jixiang He

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)
60 Downloads (Pure)

Abstract

With the increase of energy price and environment problem, the energy consumption of machine tool is attracting more attention. The moving components of machine tools consume a large amount of energy in the operating stage. Structure optimization of moving components is a key strategy for energy saving in machine tools design. Traditionally, structural optimization of machine tools is carried out for reducing energy consumption or improving static and dynamic performance. Given that these factors are important to the
structure optimization in machine tools design, this paper presents a structural design optimization method for comprehensively considering energy consumption, static and dynamic performance of machine tool. Firstly, the
energy consumption model of the moving components is proposed, and the structural performance indicators of the moving components are analyzed. Then, based on the experiment data obtained by uniform design method, five structure parameters that have great influence on performance indicators are selected as decision variables through sensitivity analysis. To improve the computation efficiency, approximation functional relationship between the five decision variables and the four performance indicators are built through response surface
method (RSM). After that, an optimization objective is formulated by combining the four performance indicators through principal component analysis (PCA). Finally, a new hybrid algorithm which integrates Simulated Annealing (SA) and Particle Swarm Optimization (PSO) algorithm is developed to solve the structure
optimization problem. Through calculation and analysis, it is found that there is a linear relationship between the moving part mass and energy consumption. The results show that the energy consumption of optimized structure is reduced while ensuring the static and dynamic performance.
Original languageEnglish
Number of pages23
JournalJournal of Cleaner Production
DOIs
Publication statusPublished - 24 Oct 2019

Keywords

  • Energy-saving design
  • Moving components
  • Structural optimization
  • Static and dynamic performance

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