非球面件数控研抛力、研抛工具位置和姿态解耦技术

吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (01): 116-121.

非球面件数控研抛力、研抛工具位置和姿态解耦技术

史永杰^1,2,3, 郑堤^1,2, 胡利永², 王龙山³

1. 浙江大学宁波理工学院,浙江宁波 315100;
2. 宁波大学机械工程与力学学院,浙江宁波 315211;
3. 吉林大学机械科学与工程学院,长春 130022

收稿日期:2010-12-29 出版日期:2012-01-01 发布日期:2012-01-01
通讯作者: 郑堤(1956-),男,教授,博士.研究方向:精密、超精密加工,数字化制造技术.E-mail:zhengdi@nbu.edu.cn E-mail:zhengdi@nbu.edu.cn
作者简介:史永杰(1983-),男,博士研究生.研究方向:磁流变液的应用与自动化研抛技术.E-mail:jiesy2007@126.com
基金资助:
国家自然科学基金项目(50705044).

Force-position-posture decoupling technique for NC polishing of aspherical part

SHI Yong-jie^1,2,3, ZHENG Di^1,2, HU Li-yong², WANG Long-shan³

1. Ningbo Institute of Technology,Zhejiang University,Ningbo 315100,China;
2. College of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China;
3. College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China

Received:2010-12-29 Online:2012-01-01 Published:2012-01-01

摘要/Abstract

摘要：

为解决非球面自动研抛系统中普遍存在的研抛力-研抛工具的位置-研抛工具的姿态(以下简称力-位-姿)相互耦合问题,提出一种基于磁流变力矩伺服装置(MRT)的非球面数控研抛力-位-姿解耦技术。基于Hertz接触理论和摩擦学原理,分析研抛过程中的力-位-姿耦合机理,建立了耦合模型。阐述基于MRT的数控研抛力-位-姿解耦原理,开发相应的实验研究系统,建立系统研抛力模型。规划了研抛工具的路径。试验得到0.025 μm粗糙度的镜面表面。试验表明该技术能独立、主动、实时地控制研抛过程中的研抛力、研抛工具的位置和姿态。

关键词: 机械制造自动化, 研抛力, 研抛工具位置, 研抛工具姿态, 磁流变力矩伺服装置, Hertz接触理论, 非球面, 数控研抛

Abstract:

A novel force-position-posture decoupling technique was proposed based on a magnetorheological fluid torque-servo(MRT) to solve the coupling problem in the numerical control(NC) automatic polishing system of the asphesical surface. The mechanism of the force-position-posture coupling was investigated based on Hertz contact theory and the tribological principle, and a coupling model was built. The MRT-based force-position-posture decoupling principle was studied, a corresponding polishing experiment system was developed. A polishing foree control model was established, and the path of the polishing tool was planned. Experiments were cassied out and a missos-like aspherical surface with a roughness of R_a≤0.025 μm was obtained. The results proved that using the proposed decoupling techniue, the polishing force, the tool position and posture can be controlled independently, actively and simultaneoushly during the polishing process.

Key words: mechanical manufacture and automation, polishing force, position of polishing tool, posture of polishing tool, magnetorheological fluid torque-servo(MRT), Hertz contact theory, aspherical surface, NC polishing

中图分类号:

TH166

史永杰, 郑堤, 胡利永, 王龙山. 非球面件数控研抛力、研抛工具位置和姿态解耦技术[J]. 吉林大学学报(工学版), 2012, 42(01): 116-121.

SHI Yong-jie, ZHENG Di, HU Li-yong, WANG Long-shan. Force-position-posture decoupling technique for NC polishing of aspherical part[J]. 吉林大学学报(工学版), 2012, 42(01): 116-121.

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