Design and performance analysis on heat pipe hydrostatic thrust bearings based on rectangular oil pad

Abstract

Purpose The purpose of this paper is to examine the effect of application of a heat pipe in an aspect of hydrostatic thrust bearings on thermal balance and deformation and the role of this application in increasing the rotating speed of a workbench. Design/methodology/approach Numerical simulations of oil film temperature field, the temperature field and thermal deformation of the bearing’s workbench and base were performed by finite element analysis (FEA) software for both the traditional hydrostatic thrust bearings and the heat pipe ones. Findings Oil pad and workbench of the hydrostatic thrust bearings are fabricated with a heat pipe cooling structure, which can take away most of the heat generated by shearing of the oil film, control the temperature rise and thermal deformation of the hydrostatic thrust bearing effectively, avoid the dry friction phenomenon and finally improve the processing quality of equipment. Originality/value The heat pipe hydrostatic thrust bearings could control the temperature rise and thermal deformation of the hydrostatic thrust bearing effectively, avoid the dry friction phenomenon and improve the processing quality of equipment.

Plough-extrusion Forming for Making Micro-groove Heat Pipes on Hydrostatic Thrust Bearings of Heavy Machinery

“…5 where α = W/2δ if W ≤ 2δ and α = 2δ/W if W > 2δ; A W represents the cross-sectional area of wick structure calculated by Eq. (14). Thus, the F l can be calculated by Eq.…”

“…The research shows that the rotational speed, oil viscosity, bearing groove size and position have a great influence on the temperature performance of hydrostatic thrust bearing [13]. It has also been discovered that the heat pipes set on oil pad and hydrostatic thrust bearing can take away the most heat generated by the shear of the oil film and effectively control the temperature rise and thermal deformation to avoid dry friction and improve the machining quality of equipment [14].…”

Influence of multisource errors of oil film contact surface on motion accuracy of hydrostatic guideway

“…Shamoto et al (2001) used finite element method (FEM) to elucidate the interaction between oil film reaction forces and geometric errors on the oil film contact surface. Their findings revealed that thermal elevation can lead to significant deformations, further compounding surface errors, as highlighted by subsequent studies conducted by Li et al (2018) and Lei et al (2021). Furthermore, the structural integrity of hydrostatic guideway can be compromised by localized deformations resulting from screw preload, manifesting as contour errors on the oil film contact surface, which can be considered as assembly errors (Song et al, 2023).…”

Effect of texture parameters on the lubrication performance of static and dynamic pressure thrust bearings and multi-objective optimization

“…Static and dynamic pressure thrust bearings are extensively used in the field of large-scale mechanical machining due to their simple structure, high axial load-bearing capacity and smooth operation (Li et al, 2018;Liang and Yang, 2021), such as in ship propellers (Zhou et al, 2023), CNC machine tool rotary tables (Qu et al, 2022) and aircraft engines (Ouyang, 2020). Nevertheless, when the thrust bearing operates under high-speed and heavy-load conditions, the strong shearing and squeezing forces from the workbench will affect the flow state of lubricating oil.…”

“…Static and dynamic pressure thrust bearings are extensively used in the field of large-scale mechanical machining due to their simple structure, high axial load-bearing capacity and smooth operation (Li et al. , 2018; Liang and Yang, 2021), such as in ship propellers (Zhou et al.…”