中国机械工程

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[综述]高速数控转台优化设计方法研究现状与展望

刘世豪1,2;林茂1   

  1. 1.海南大学机电工程学院,海口,570228
    2.海南大学热带机电装备与技术实验室,海口,570228
  • 出版日期:2020-07-10 发布日期:2020-08-03
  • 基金资助:
    国家自然科学基金资助项目(51865008);
    江苏省精密与微细制造技术重点实验室开放基金资助项目(201925)

Research on Status and Prospects of Optimization Design Method of High-speed CNC Turntables

LIU Shihao1,2;LIN Mao1   

  1. 1.College of Mechanical and Electrical Engineering,Hainan University,Haikou,570228
    2.Tropical Electromechanical Equipment and Technology Laboratory,Hainan University,Haikou,570228
  • Online:2020-07-10 Published:2020-08-03

摘要: 在机床的高速加工过程中,因数控转台各种热源发热与变载荷的共同作用而产生热-力耦合效应,但当前的数控转台优化设计方法往往忽略了热-力耦合效应对转台动态特性的影响。在深入剖析国内外数控转台研究成果的基础上,提出探索热-力耦合效应及其产生的机理,建立转台的热-力耦合模型,得到高速数控转台热-力耦合动态特性。鉴于蜂窝结构具有良好的散热性及力学性能,提出研究基于蜂窝的转台仿生原理,获取高速数控转台热-力耦合仿生设计准则。以提高转台热-力耦合动态特性为目的,提出运用仿生设计准则对结构进行多目标优化,进而形成一套新颖的高速数控转台热-力耦合仿生优化设计方法。

关键词: 数控转台, 多目标优化, 优化设计方法, 仿生设计, 热-力耦合

Abstract: During the high-speed precision machining of the machine tools, the CNC turntable was subjected to variable loads and a variety of heat sources to produce a thermal-mechanical coupling effect. The current CNC turntable optimization design method often ignored the influences of the thermal-mechanical coupling effect on the dynamic characteristics of the turntables. The paper proposed to explore the thermal-mechanical coupling effect and the mechanism based on an in-depth analysis of the research results of CNC turntables, and then the thermal-mechanical coupling model of the CNC turntables was established to obtain the thermal-mechanical coupling dynamic characteristics of high-speed CNC turntables. In view of the good heat dissipation and mechanics properties of the honeycomb structure, the thermal-mechanical coupling bionic design criteria of high-speed CNC turntables was proposed based on the bionic principle. In order to improve the thermal-mechanical coupling dynamic characteristics of high-speed CNC turntables, the structural multi-objective optimization was carried out through bionic design criteria, and then a novel thermal-mechanical coupling bionic optimization design method of high-speed CNC turntables was established.

Key words: CNC turntable, multi-objective optimization, optimization design method, bionic design, thermal-mechanical coupling

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