Original scientific paper

https://doi.org/10.21278/TOF.471030321

Micro-Clearance Oil Film Temperature Field Characteristics of High Speed and Heavy Type Hydrostatic Thrust Bearing under Extreme Operating Conditions

Xiaodong Yu ; Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, China
Zelin Han ; Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, China
Shiwei Zhan ; Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, China
Defan Zhou ; Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, China
Fakun Wang ; Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, China
Fan Sun ; Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, China
Jianhua Jiao ; Qiqihar Heavy CNC Equipment Corp. LTD., Qiqihar, China
Junfeng Wang ; Qiqihar Heavy CNC Equipment Corp. LTD., Qiqihar, China
Hui Jiang ; Qiqihar Heavy CNC Equipment Corp. LTD., Qiqihar, China

Abstract

To explore the micro-clearance oil film temperature field characteristics of hydrostatic thrust bearings under operating conditions of high speed and heavy load, a mathematical model of micro-clearance oil film is established. According to the principle of computational fluid dynamics, the relationship between load capacity and rotational speed is calculated, and the model is solved using the finite volume method. The micro-clearance oil film temperature field is also investigated and tested to verify the theoretical analysis. The results show that the rotational speed is coupled with the load-carrying capacity of hydrostatic thrust bearings. When the extreme operating conditions are between 0t-228.9r/min and 4t-214.9r/min, the oil film maximum temperature increases slowly with the load increase and rotational speed decrease, and the average temperature decreases slowly. On the other hand, when the extreme operating conditions are between 4t-214.9r/min and 32t-78.9r/min, the maximum temperature and the average temperature slowly decrease as the load increases and the rotational speed decreases; the influence of rotational speed is greater than that of load, and the temperature rise of the upstream side is sharper than that of the downstream side.

Keywords

Hydrostatic thrust bearing; Large-scale numerical control equipment; Extreme operating conditions; Micro-clearance oil film temperature field characteristics; Simulation and experimental investigation

Hrčak ID:

299476

URI

https://hrcak.srce.hr/299476

Publication date:

19.4.2023.

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