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航空轴类工件外圆磨削润滑性能流固耦合研究

发表时间:2019-04-30  浏览量:530  下载量:34
全部作者: 郑子琦,杨德财,孟凡明
作者单位: 重庆大学机械传动国家重点实验室;上海宇航系统工程研究所;上海市空间飞行器机构重点实验室
摘 要: 针对外圆磨削过程中的润滑问题,以9310钢航空轴类工件为研究对象,建立轴类工件外圆磨削润滑模型。采用流固耦合方法对计入工件变形影响的外圆磨削模型进行求解,在不同砂轮与工件初始最小间隙、砂轮直径、砂轮宽度及砂轮速度下,将考虑和不考虑工件变形影响的磨削液承载力、摩擦力和摩擦系数进行对比研究。数值结果表明:与不考虑工件变形的研究相比,在考虑工件变形下,轴类工件外圆磨削的磨削液承载力和摩擦力均有所减小,且减小趋势随着砂轮与工件初始最小间隙减小和砂轮直径、宽度及速度的增大变得明显;考虑工件变形后,轴类工件外圆磨削的摩擦系数升高,且工件变形对摩擦系数的影响随着砂轮直径、宽度及速度的减小变得明显。
关 键 词: 机械学;外圆磨削;润滑性能;流固耦合;工件变形
Title: Fluid structure interaction study on lubrication performance in external cylindrical grinding for aviation shaft workpiece
Author: ZHENG Ziqi, YANG Decai, MENG Fanming
Organization: State Key Laboratory of Mechanical Transmissions, Chongqing University; Shanghai Institute of Aerospace Systems Engineering; Shanghai Key Laboratory of Spacecraft Mechanism
Abstract: For the lubrication problem during external cylindrical grinding, the lubrication model in the external cylindrical grinding for the aviation shaft workpiece made of the 9310 steel was established. In doing so, the fluid structure interaction method was used to solve the external cylindrical grinding model considering the workpiece deformation. Under different initial minimum clearances between wheel and workpiece, wheel diameters, widths or speeds, the load-carrying capacity, friction force and friction coefficient of grinding fluid with workpiece deformation were analyzed and compared with those without workpiece deformation. The numerical results show that compared with the study without workpiece deformation, the load-carrying capacity and the friction force reduce under the consideration of the workpiece deformation. The trend of reduction becomes obvious with the decrease of the initial minimum clearance and the increase of the wheel diameter, width and speed. After considering the workpiece deformation, the friction coefficient increases, and the influence of the workpiece deformation on the friction coefficient becomes obvious with the decrease of the diameter, width and speed.
Key words: mechanics; external cylindrical grinding; lubrication performance; fluid structure interaction; workpiece deformation
发表期数: 2019年4月第2期
引用格式: 郑子琦,杨德财,孟凡明. 航空轴类工件外圆磨削润滑性能流固耦合研究[J]. 中国科技论文在线精品论文,2019,12(2):197-209.
 
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