基于有限元分析的数控机床床身结构分析
Structural Analysis of Computer Numerical Control Machine Tool Bed Body Based on Finite Element Analysis
刘强1
作者信息
- 1. 天津职业技术师范大学,天津 255400
- 折叠
摘要
通过有限元分析方法优化床身结构,以提高机床的整体性能和加工精度.研究过程中先构建机床的三维模型,然后简化模型,以提高分析效率,同时对机床床身进行受力分析和动静态特性分析.通过对前后磨床床身的受力分析,明确不同位置受到的切削力大小和方向,并据此得到后磨床床身的完整受力情况.通过对床身进行动静态特性分析,确定床身的最大等效应力、最大静变形尺寸以及模态分析结果.最后,通过对床身结构的优化分析,调整筋板的位置和数量以增强其刚性和稳定性.改进后的参数尺寸对比显示,尽管整体质量有所增加,但在可接受范围内,同时磨床床身的最大静变形和一阶固有频率均得到了显著优化.
Abstract
This paper aims to optimize the bed body structure by finite element analysis method to improve the overall performance and machining accuracy of the machine tool.In the process of research,the 3D model was constructed and the model was simplified to improve the analysis efficiency.Then the force analysis and dynamic and static characteristics of the machine bed are analyzed.Through the analysis of the force of the front and rear grinding bed body,the cutting force of different positions is clarified,and the complete force of the rear grinding bed body is obtained accordingly.By analyzing the dynamic and static characteristics of the bed body,the maximum iso effect force and the maximum static deformation size and the modal analysis results are determined.Finally,through the optimal analysis of the bed body structure,the position and number of the tendon plate are adjusted to enhance its rigidity and stability.The improved parameter size comparison shows that although the overall quality has increased,within an acceptable range,the maximum static deformation and first-order natural frequency of the grinder bed have been significantly optimized.
关键词
有限元分析/数控机床/床身结构Key words
finite element analysis/computer numerical control machine tool/bed body structure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据