惯性摩擦焊主轴轴向闭式静压轴承瞬态润滑性能

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中图分类号：TP242；S776 文献标识码：A 文章编号：2095-2953（2025）03-0101-05

Transient lubrication Performance of Axial Closed Hydrostatic Bearing for Inertial Friction Welding Spindle

DAI Rui-chun 1 ， JIA Wen-tao1， GAO Da-wei 1 ，GENG Zhen-kun 1 ， YANG Xin-yi 2 ， YU Xiao-dong 2 *

（1.Qiqihar First Machine Tool Factory Corp.LTD.，Qiqihar Heilongjiang 161oo5，China; 2.KeyLaboratoryofAdvancedManufacturingandIntellgentTechnology，MinistryofEducation，HarbinUniversityofScieceand Technology，Harbin Heilongjiang 15oo80，China）

Abstract：Forthe high-quality manufacturing ofa partof theaero engine，the inovative structure of axial closed hydrostaticbearing wasadopted in the spindle system of the inertial friction welding machine.Three-dimensional models and boundaryconditions of clearance oil films inthe hydrostatic bearing were establishedand determined.Utilizing CFD（Computational Fluid Dynamic），dynamic mesh technology，two-phase flow model and Fluent software， the friction characteristics ofthehydrostatic bearing were studied during the whole working process，thatis，the pressure and temperature distributionof clearance oil films were discussed，when the inertial friction welding equipment was subjected to the upsetting force.The results indicatedthat when theoil film pressure on carrer side was in nonequilibrium state，the pressure oncarrier side increased first and then tended to be stable with the reduction of the thickness ofoil films.The temperature riseof the carrer sideoilfilm increased rapidlyand then increased slowly with thereduction of theoil filmthickness，andthe temperature rise was highest when the rotation stopped.In the non-equilibrium state，theoil film presureofthe back pressure sideoilfimdecreased with theincreaseof theoil film thickness，andtheoilfilm pressure is relativelystable atthefinal position，andthe temperatureriseof theoilfilmon back pressure side was low and could be ignored.

Key words：transient lubrication performance，spindle system，inertial friction welding equipment，aero engine

目前，国内外学者围绕静压轴承的研究做了大量研究工作。（剩余7490字）