Proposal of a High Rigidity and High Speed Rotating Mechanism Using a New Concept Hydrodynamic Bearing in X-Ray Tube for High Speed Computed Tomography

被引：7

作者：

Hattori, Hitoshi ^{[1
]}

Fukushima, Harunobu ^{[1
]}

Yoshii, Yasuo ^{[1
]}

Nakamuta, Hironori ^{[2
]}

Iwase, Mitsuo ^{[2
]}

Kitade, Koichi ^{[2
]}

机构：

[1] Toshiba Co Ltd, Ctr Corp Res & Dev, Saiwai Ku, Kawasaki, Kanagawa 2128582, Japan

[2] Toshiba Elect Tubes & Devices Co Ltd, Otawara 3248550, Japan

来源：

JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING | 2009年 / 3卷 / 01期

关键词：

Medical Appliance; X-Ray Tube; Rotating Mechanism; Journal Bearing; Hydrodynamic Lubrication; Liquid Metal; Tribology;

D O I：

10.1299/jamdsm.3.105

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, a high rigidity and high speed rotating mechanism using a new concept hydrodynamic bearing in X-ray tube for high speed computed tomography is proposed. In order to obtain both the stability and the high load carrying capacity, the hydrodynamic bearing lubricated by liquid metal ( Gallium alloy), named as the hybrid hydrodynamic bearing generates the lubricating film by wedge effect on the plane region between the spiral grooves under high loading condition. The parallelism between the bearing and the rotating body can be secured by optimizing the rigidity distribution of stationary shaft in the proposed rotating mechanism. By carrying out the fundamental design by numerical analyses, it has been made clear that the hybrid hydrodynamic bearing and the rotating mechanism are suitable for the X-ray tube used in the CT with ever-increasingly scanning speed.

引用

页码：105 / 114

页数：10

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