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。
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.
作者
刘世豪
林茂
LIU Shihao;LIN Mao(College of Mechanical and Electrical Engineering,Hainan University,Haikou,570228;Tropical Electromechanical Equipment and Technology Laboratory,Hainan University,Haikou,570228)
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2020年第13期1629-1637,共9页
China Mechanical Engineering
基金
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)。
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
CNC turntable
multi-objective optimization
optimization design method
bionic design
thermal-mechanical coupling
