起重运输机械Issue(10)：46-51,6.
滚珠丝杠的静压结构改造及其流场数值模拟分析
涂承媛 1邢欢欢 1王新华 1李迎超 1孙肖1
作者信息
- 1. 北京工业大学机械工程与应用电子技术学院 北京 100124
- 折叠
摘要
Abstract
To improve the processing accuracy of the obsolete machine tool, the paper puts forward the injection moulding technology used to form the hydrostatic lead screw pair based on the existing screw. The critical structural parame-ters for hydrostatic nut are designed based on the design theory of the liquid hydrostatic journal bearing. Pro/E 3D modeling technology is used to develop the hydrostatic screw pair 3D model. FloEFD fluid analysis software is adopted for simulation analysis of the internal flow field of the hydrostatic lead nut, to obtain the hydrostatic cavity and resistive oil edges under different loaded pressures, hydraulic pressure distribution in the return chute, and hydraulic action borne by the screw. The analysis shows that the hydraulic pressure in the hydrostatic cavity is evenly distributed; under the loaded action, the hy-draulic pressure in the upper part of the hydrostatic nut is greater than the liquid pressure in the hydrostatic cavity below;the screw surface is subject to the evenly distributed liquid force, and the screw indirectly contact the nut with the evenly-distributedoil film. Therefore, the homogenized error effect of the oil film can lower the requirement on the screw surfaceaccuracy.关键词
滚珠丝杠/液体静压丝杠/改造/CFD/流场分析Key words
ball screw/hydrostatic screw/transform/CFD/flow field analysis分类
机械制造引用本文复制引用
涂承媛,邢欢欢,王新华,李迎超,孙肖..滚珠丝杠的静压结构改造及其流场数值模拟分析[J].起重运输机械,2016,(10):46-51,6.
