Air Film Temperature and Heat Partition Ratio in Aerostatic Journal Bearing
-
- OHISHI Susumu
- 青山学院大学理工学部
-
- MATSUZAKI Yasushi
- 青山学院大学大学院理工学研究科
Bibliographic Information
- Other Title
-
- 空気静圧ジャーナル軸受における空気膜温度と熱配分割合
- クウキ セイアツ ジャーナル ジクウケ ニ オケル クウキ マク オンド ト ネツ ハイブン ワリアイ
Search this article
Abstract
The objective of the present paper is to clarify the heat partition ratio in spindle units with aerostatic bearings. Heat generated in the journal bearing clearance is transferred to the spindle, bush/housing and exhaust air. In order to develop the thermal model on the basis of experimental evidences, a test machine was used running to a maximum rotational speed of 20000 min-1 with a 60 mm diameter spindle supported by aerostatic journal bearings of 20 μm radial clearance, and the temperatures were measured of the housing, bush and the interface between the bush and air film as well as the inlet and outlet air. A finite element model has been developed to evaluate the partition ratio. The analysis shows that the ratios of the heat flowing into the spindle, into the bush and into the exhaust air to the generated heat are about 1/3 respectively in the test air spindle unit, and that increasing the bearing clearance is most effective to reduce the air film temperature.
Journal
-
- Journal of the Japan Society for Precision Engineering, Contributed Papers
-
Journal of the Japan Society for Precision Engineering, Contributed Papers 71 (10), 1239-1244, 2005
The Japan Society for Precision Engineering
- Tweet
Details 詳細情報について
-
- CRID
- 1390001205282004224
-
- NII Article ID
- 110001868404
-
- NII Book ID
- AA11966630
-
- ISSN
- 18818722
- 13488716
- 13488724
-
- NDL BIB ID
- 7686657
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed