机床磁性动力研磨头设计.docxVIP

本 科 毕 业 设 计（论文） 题 目：机床磁性动力研磨头设计 摘 要 研磨是超精密和精密加工中一种重要加工方法。磁性研磨加工(MAF)是研磨的一种，磁性研磨主要有磁性磨料研磨和磁流体研磨两种，本文主要研究的是磁性磨料研磨。磁性研磨加工方法是磁性磨料在磁场作用下，被吸附在磁极上，形成了具有一定刚度的“柔性磨料刷”实现对工件表面研磨加工和棱边去毛刺的一种新型表面光整加工方法。目前在我国尚不普及，没有专用的设备，为了推广该项技术，研制开发了磁性研磨机，而研磨头是磁性研磨机的核心部分，本文主要探讨用CA6140普通车床改装的磁性研磨头的结构设计，研磨头的设计是改装后机床设计的重要一部分。文章论述了改装后的普通车床的磁性研磨加工机理，介绍了让工件旋转，磁极不动、并做往复运动的加工方法。本设计主要包括研磨头的整体设计和零部件的设计以及磁力系统的设计计算。 关键词： 磁性研磨头；磁性研磨；铁磁性材料；电磁感应器；精密加工 ABSTRACT Grinding is an important process method of Ultra-precision and precision machining. Magnetic Abrasive Finishing (MAF) is a kind of grinding and have two main kinds,they are magnetic abrasive grinding and magnetic abrasive magnetic fluid grinding.This study introduces the magnetic abrasive grinding. Magnetic properties of magnetic abrasive polishing process is that magnetic abrasive in the magnetic field was attracted by the magnetic poles,and forms a certain rigidity of soft abrasive brush to achieve on the surface grinding and deburring the edge of a new surface finishing methods. At present in China it is not yet universal,and have no special equipment.In order to promote the technology, there are developed a magnetic grinding machine.however, the grinding head is the core of the magnetic grinding machine, the paper focuses on CA6140 lathe with a grinding head of the modified structure of the magnetic design and grinding head design is modified to an important part of machine tool design. This article discusses the converted lathe machining mechanism of magnetic abrasive and introduces the workpiece rotation, the magnetic poles which do not move, and makes reciprocating motion of the processing methods. The design includes the overall design of grinding head and parts of the design and calculation of magnetic system design. Key words: Magnetic Grinding head ；Magnetic Abrasive Finishing；Ferromagnetic materials；Electromagnetic sensors；precision machining 目 录 第一章 绪论…………………………………………………………………………1 1.1 概述…………………………………………………………………………………1 1.2