液压动力补偿卡盘夹紧力特性分析与研究
Analysis and Research on the Clamping Force Characteristics of Hydraulic Power Compensation Chuck
王天成 1孙鹏文 1张兰挺 1张国斌 2王岩松2
作者信息
- 1. 内蒙古工业大学机械工程学院,内蒙古呼和浩特 010051
- 2. 呼和浩特众环工贸股份有限公司,内蒙古呼和浩特 010000
- 折叠
摘要
液压动力卡盘是数控机床的核心功能部件,其设计应用水平直接影响工件的加工质量.根据液压动力补偿卡盘的结构和工作原理进行受力分析,分别推导静态和动态夹紧力理论计算模型,得出影响静态、动态夹紧力的主要因素分别是楔面倾角、摩擦因数和油缸推力、机床转速、卡盘和工件的刚度.基于有限元仿真分析平台,采用位移载荷代替输入力的方法模拟卡盘动态夹紧过程,不同工况下的夹紧力仿真与理论结果对比表明:二者数值相近,最大误差为 6.2％,验证了所建立动态夹紧力理论计算模型的正确性.
Abstract
Hydraulic power chuck is the core functional component of CNC machine tools,and its design and application level di-rectly affect the machining quality of the workpiece.Based on the structure and working principle of hydraulic power compensation chuck,force analysis was conducted,and theoretical calculation models for static and dynamic clamping forces were derived.It was found that the main factors affecting static and dynamic clamping forces were wedge surface inclination angle,friction coefficient and cylinder thrust,machine speed,chuck and workpiece stiffness.Based on the finite element simulation analysis platform,the dynamic clamping process of the chuck was simulated using displacement load instead of input force.The comparison between the clamping force simulation and theoretical results under different working conditions shows that:the two values are similar,the maximum error is 6.2％,verifying the correctness of the established dynamic clamping force theoretical calculation model.
关键词
液压动力补偿卡盘/夹紧力/计算模型/数值仿真Key words
hydraulic power compensation chuck/clamping force/computation model/numerical simulation引用本文复制引用
基金项目
内蒙古自治区关键技术攻关计划项目(2020GG0275)
出版年
2024
NETL
NSTL
万方数据