【作者】 李唯东；

【导师】 杨胜强；

【作者基本信息】 太原理工大学 ， 机械制造及其自动化， 2005， 硕士

【摘要】 液体磁性磨具光整加工法是一种利用了磁性液体及磁流变液技术的表面光整加工方法。液体磁性磨具在无外磁场作用下时表现出良好的流体特性;在强磁场的作用下它的粘度会在毫秒级的时间内增加两个数量级以上,表现出类似固体的特性,其强度由剪切屈服应力表征,并且随着外加磁场的强度增加而增大。而且液体磁性磨具粘度变化是连续的,也就是一旦去掉磁场又立刻恢复液体的特性。我们把这种特性称为液体磁性磨具的流变性。 对于传统的表面光整加工方法,加工非规则表面、型腔面时比较困难,而且设备通用性差。但是对于液体磁性磨具光整加工法来说,在施加磁场之前它是具有良好的流动性的液体,能与工件的表面及型腔充分接触;施加磁场后,磨具变“硬”,磨料被挤压在工件表面,当与工件之间有相对运动时就能对表面作光整加工。这也是开发液体磁性磨具光整加工法的主要原更多还原

【Abstract】 The liquid-magnetic abrasive tool finishing technology is an innovative finishing technology that takes advantage of the theory of magnetorheological fluid. It has typical liquid characteristics when there is no external magnetic field around it. But when a strong magnetic field is applied, the viscosity of it will increase more than 100 times within a few milliseconds, and it will show the characteristics those are resemble to solid’s. Its strength is described by shear stress, and with the increase of magnetic flux density, the strength increases. It should be noted that the liquid-magnetic abrasive tool would show the liquid’s behavior back rapidly as soon as the external magnetic field is removed. We call this feature asrheological property.To traditional finishing technology, it is very difficult to process the inside face and the complex or irregular face. Usually, the device designed to process one work is not applicable to another and generally, there is tension stress left inside the processed surface. While to the liquid-magnetic abrasive tool finishing technology, before magnetic field being fixed, the abrasive tool can easily contact any kind of surface because of the liquid property. After the magnetic field being applied, the abrasive tool change to solid and the abrasers is pressed onto the surface to be processed. Then the surface can be processed when there is relative movement between abrasive tool with surface.On based of representing the theory of liquid-magnetic abrasive tool finishing, this paper researched the material’s removal regular and mixed several abrasive tools with different compounding. Then getting how the each component to influence the processing effect by experiments.更多还原