Optimization of gear modification of high-pressure gear pump based on orthogonal test method
LIU Jie
WANG Feng
TIAN Yongjun
YANG Dayao
Abstract：[Objective]Aiming at the problems of high operating noise,gear meshing interference and uneven load distribution of high-pressure gear pumps,a gear modification optimization scheme based on orthogonal test method was proposed to overcome the large error defect of traditional calculation modification.[Methods]Firstly,a calculation model of high-pressure gear pump gears was established,and the range of modification parameters was determined through theoretical calculation.Secondly,tooth tip modification,tooth root modification,helix modification and modification length were selected as influencing factors,and an orthogonal test was carried out with the peak-to-peak value of transmission error as the optimization objective.Then,the optimal combination of modification parameters was determined.Finally,simulation comparison was completed by KISSsoft software,and verification was carried out through bench noise test.[Results]The results show that after modification,the tooth surface contact stress is reduced by 12%,the peak-to-peak value of transmission error is reduced by 22.8%,and the noise is reduced by a maximum of 4 dB under high load conditions.Meshing interference and partial load are eliminated,which provides a reference for noise reduction optimization of high-pressure gear pumps.
Keywords：Gear pumpLoad distributionGear modificationOrthogonal test methodNoise
Publication Date：2026-06-30
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：10( 161-170 )