文章基本信息

标题：A study of cooling system in a grease-lubricated precision spindle
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作者：Li Wu ; Qingchang Tan
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2016
卷号：8
期号：8
DOI：10.1177/1687814016665296
语种：English
出版社：Sage Publications Ltd.
摘要：In this article, an integrated thermal model is numerically analyzed to calculate the heat generation of spindle bearings and temperature distribution of the spindle system, with consideration of the operating conditions and lubrication conditions, such as rotation speed, preload, and oil film thickness. Surface roughness is an important parameter of elastohydrodynamic lubrication, which is measured by an optical topographer and characterized by statistical parameters. The experimental measurement system of the precision spindle is composed of a set of laser triangulation sensors and thermal infrared imagers. After the thermal characteristics, mathematical models are experimentally verified, and the effects of cooling oil temperature, cooling oil flow rate, and characteristic dimensions of the cooling channel on keeping the spindle gradient are analyzed in detail. The results indicated that temperature gradient across the spindle system can be significantly controlled by optimizing the technical parameters of the oil-cooling system.
关键词：Precision spindle; heat generation; elastohydrodynamic lubrication; oil film thickness; surface roughness; temperature gradient; oil-cooling system