CAJ | 학술논문

密封用的外环槽结构特殊,传统方法很难实现对其底面和侧面同步光整,这也直接影响到了环槽光整效率.为了提高研磨效率,提出利用磁力研磨法对环槽同步光整的工艺方案.根据磁力研磨理论,并结合有限元软件ANSYS对磁回路的模拟分析,确定了磁极的大小、形状和分布形式,并依此开发了可以对环槽底面和侧面同步光整的试验装置.通过对主轴转速、磨料粒径、磁极与环槽间隙这些工艺参数进行的试验研究,得到了最佳的工艺条件,并进行了试验验证.结果表明:经磁力研磨法同步光整60min后,环槽底面与侧面的表面粗糙度由最初的Ra4.8μm降至Ra0.7μm,且加工纹理基本去除,即磁力研磨法可以高效地实现外环槽表面的同步光整.
밀봉용적외배조결구특수,전통방법흔난실현대기저면화측면동보광정,저야직접영향도료배조광정효솔.위료제고연마효솔,제출이용자력연마법대배조동보광정적공예방안.근거자력연마이론,병결합유한원연건ANSYS대자회로적모의분석,학정료자겁적대소、형상화분포형식,병의차개발료가이대배조저면화측면동보광정적시험장치.통과대주축전속、마료립경、자겁여배조간극저사공예삼수진행적시험연구,득도료최가적공예조건,병진행료시험험증.결과표명:경자력연마법동보광정60min후,배조저면여측면적표면조조도유최초적Ra4.8μm강지Ra0.7μm,차가공문리기본거제,즉자력연마법가이고효지실현외배조표면적동보광정.
Due to the special structure of the external ring groove used in seal,the traditional finishing meth-ods are difficult to synchronous finishing its bottom and sides.It also directly affects the finishing efficiency.The process scheme of synchronous finishing the ring groove by magnetic abrasive finishing ( MAF) method was proposed to improve finishing efficiency.The size,shape and distribution patterns of the magnet poles were deter mined,and the synchronous equipment was developed according to MAF theory and combined with the simulation of the magnetic circuit by ANSYS software.Experiments on the spindle speed,the gap between magnet pole and bottom surface,abrasive particle size were done and optimum condition was ob-tained,then the experimental verification was conducted.The results showed that:the surface roughness of bottom or side surface from initial Ra4.8μm decreased to Ra0.7μm,the textures are removed after 60 min.So the MAF method can efficiently synchronous finishing the external ring groove surface.