Experimental and numerical study of tooth finishing processes contribution to gear noise

Abstract

a b s t r a c tThe contribution of gear tooth flank surface micro-finish on gear noise has not yet been taken into consideration. This paper is devoted to study the simultaneous effect of tooth roughness and lubricant viscosity on automotive gear vibrations. The vibrations performances were evaluated on an instrumented test rig under both dry and wet conditions. A non-destructive replication technique coupled to 3D optical measures was used to acquire the flanks topographies, which were characterized using multiscale decomposition. A three-dimensional finite element simulation of a helical gear was performed to assess the micro-scales impact on gear noise. Numerical representative surfaces morphologies were introduced into the simulation and compared through the transmission error calculation. Results have shown gear noise dependence on tooth finishing processes.

Classifying, Predicting, and Reducing Strategies of the Mesh Excitations of Gear Whine Noise: A Survey

“…In a word, there are four primary sources of TE for a gear pair: gear teeth elastic deformation [33,34] and stiffness variance [35][36][37][38][39][40][41][42][43][44][45][46][47], manufacturing errors [30,[48][49][50], misalignments [51][52][53][54][55][56][57][58] due to supporting structures, and intentional profile modifications [33,53,[59][60][61][62][63][64][65][66]. In addition, gear surface roughness [67][68][69][70] also contributes to TE. It is worth mentioning that gear microgeometry correction is a significant approach for minimizing TE excitation; the details of the approach are described in the subsequent sections.…”

Modeling and analysis of tooth surface roughness for internal gearing power honing gear

“…r 1 is the position vector of work-piece gear in coordinate system S 1 (O 1 -x 1 -y 1 -z 1 ), as shown in Fig. 5, the position vector of a random point m ′ can be expressed as r 1 whereby p is the helical pitch value of work-piece gear.…”

“…It is usually the last process after gear grinding or heat-treatment, to eliminate the gear twist, reduce the tooth surface roughness and improve the tooth texture [1]. Tooth surface roughness, which is the subject of this study, has a great influence on the contact characteristic and lubrication state on tooth surface under meshing, further influences the fatigue life and reliability significantly.…”

“…The curvature radius of the contact point on work-piece surface and grinding wheel surface (tooth profile) r and R The radius values of work-piece gear and honing wheel at the contact point p and p 2 The pitch of the helical line at the contact point λ 1 The generating angle of involute at the contact point r b1 The base circle radius of work-piece gear α…”

Noise Prediction of Traction Gear in High-Speed Electric Multiple Unit

“…So the traditional view or hypothesis is corrected that there are strong correlation between transmission error and dynamic response. Jolivet et al [8] studied the influence of tooth surface roughness and lubricating oil viscosity on automobile gear vibration, and the laboratory tests showed that gear noise was related to tooth surface processing technology. Divandari et al [9] established a six-degree-of-freedom nonlinear dynamic model containing different gear errors and defects, and studied the influence of local defects and tooth shape changes on the overall dynamics of gear.…”