Studies on Limiting Load for Scoring and Frictional Loss Of Hypoid Gears of Klingelnberg Type

Naruse, Chotaro; Haizuka, Shoji; Nemoto, Ryozo; Suganuma, Tatsuji

doi:10.1299/jsme1958.27.2053

Cited by 4 publications

(4 citation statements)

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“…v (1) f v (1) h ,ṅ (1) r = ṅ (1) ḟ n (1) h (7) Similarly, the velocity vectors of point q on surface 2 are defined in the coordinate system S b (e s , e q ) as v (2) r = v (2) s v (2) q ,ṅ (2) r = ṅ (2) ṡ n (2) q (8) According to Rodrigues' formula, vectors v (i) r andṅ (i) r are collinear for the principal directions and their relationship to the principal directions is given bẏ…”

Section: Surface Velocities and Radii Of Curvature In The Desired Directionsmentioning

confidence: 99%

“…These studies can be categorized into several groups. The first group of studies focused on measuring power losses of gear pairs directly [8][9][10][11][12][13][14][15][16][17]. Several others measured µ values using roller test machines under conditions simulating a gear pair with the expectation that these measured µ values can be used to predict the efficiency of a gear pair [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

“…Buckingham [58] proposed an approximate formula for the power losses of hypoid gears, which is the sum of the losses of corresponding spiral bevel and worm gear pairs. Naruse et al [8,10] conducted several tests on scoring and frictional losses of hypoid gears of Klingelnberg type. Coleman [59] used a simple formula to calculate hypoid gear efficiency with a constant µ, or a µ-formula with a very limited number of parameters included [60].…”

Section: Introductionmentioning

confidence: 99%

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Prediction of friction-related power losses of hypoid gear pairs

Kahraman

2007

Proceedings of the Institution of Mechanical Engineers, Part K:

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A model to predict friction-related mechanical efficiency losses of hypoid gear pairs is proposed in this study. The model includes a gear contact model, a friction prediction model, and a mechanical efficiency formulation. The friction model uses a friction coefficient formula obtained by applying multiple linear regression analysis to a large number of elastohydrodynamic lubrication analyses covering typical ranges of key parameters associated with surface roughness, geometry, load, kinematics, and the lubricant. Formulations regarding the kinematic and geometric properties of the hypoid gear contact are presented. The load and friction coefficient distribution predictions are used to compute instantaneous torque/power losses and the mechanical efficiency of a hypoid gear pair at any given position. Results of a parametric study are presented at the end to highlight the influence of key operating conditions, surface finish, and lubricant properties on mechanical efficiency losses of hypoid gears.

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Section: Surface Velocities and Radii Of Curvature In The Desired Directionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Prediction of friction-related power losses of hypoid gear pairs

Kahraman

2007

Proceedings of the Institution of Mechanical Engineers, Part K:

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“…These predictions are in line with findings of other researchers. For hypoid gears, there have been scoring tests and efficiency measurements by Naruse et al [27] and approximation of power loss for hypoid gears as a combination of spiral bevel gears and a worm gear by Buckingham [28]. These studies have indicated transmission inefficiency in the order of 2-4%.…”

Section: Resultsmentioning

confidence: 99%