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31. 发明授权

US4821466A Method for grinding using a magnetic fluid and an apparatus thereof 失效
标题翻译：使用磁性流体研磨的方法及其装置
公开(公告)号：US4821466A
公开(公告)日：1989-04-18
申请号：US152937
申请日：1988-02-05
申请人： Koji Kato , Noritsugu Umehara , Shigeru Adachi , Shin Sato
发明人： Koji Kato , Noritsugu Umehara , Shigeru Adachi , Shin Sato
IPC分类号： B24B1/00 , B24B31/112 , B24C1/00
CPC分类号： B24B31/112 , B24B1/005
摘要： It is an object of present invention to provide an efficient method for grinding of the surface of a work and an apparatus thereof, using a magnetic fluid containing abrasive grains.The method of the present invention for grinding a work immersed in a magnetic fluid containing abrasive grains filled in a container, said magnetic fluid being given a magnetic field from the outside of the container with magnet comprises: immersing a floating pad in said magnetic fluid at a position adjacent to the work, said floating pad being given a buoyant force by said magnetic field whereby the abrasive grains existing between the floating pad and the work are pushed onto the work and giving a mutual motion between the work and the magnetic fluid containing abrasive grains.In conventional method for grindings using a magnetic fluid containing abrasive grains and without the floating pad, the grinding load has been mainly dependent upon the buoyant force of abrasive grains, but the grinding rate thereby was too small owing to rather little buoyant force of abrasive grains.According to the present invention using the floating pad, the grinding rate is significantly improved by strongly pushing abrasive grains onto the surface of the work, resulting from larger grinding load and the resistant power of the floating pad to the grinding direction.
摘要翻译：本发明的目的是提供一种使用含有磨粒的磁性流体来研磨工件表面的有效方法及其装置。本发明的方法，用于研磨浸在含有填充在容器中的磨粒的磁性流体中的工件，所述磁性流体从具有磁体的容器的外部得到磁场，包括：将浮动垫浸入所述磁性流体中与工件相邻的位置，所述浮动垫被所述磁场赋予浮力，由此存在于浮动垫和工件之间的磨料颗粒被推到工件上并且在工件和含有磨料的磁性流体之间产生相互的运动谷物。在使用含有磨粒的磁性流体并且没有浮动垫的研磨的常规方法中，研磨载荷主要取决于磨粒的浮力，但由于磨粒的相当小的浮力，磨削速度因此太小。根据使用浮动垫的本发明，通过将磨粒强烈地推到工件的表面上，由于较大的磨削载荷和浮动垫的磨削方向的抵抗力，磨削速度显着提高。

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