Tooth Surface Fatigue of AISI9310 Steel Spur Gears

6th International Power Transmission and Gearing Conference: Advancing Power Transmission Into the 21st Century ◽

10.1115/detc1992-0096 ◽

1992 ◽

Author(s):

H. Kotorii

Keyword(s):

Service Life ◽

Surface Hardness ◽

Load Cycle ◽

Tooth Profile ◽

Tooth Surface ◽

Spur Gears ◽

Gear Teeth ◽

Surface Fatigue ◽

Profile Errors ◽

Tooth Profile Errors

Abstract With a JIS 0 class Spur Gears of AISI9310 steel, module 4, presure angle 25 degree tooth profile, the numbers of pinion teeth 21 / gear teeth 29 carburized and tooth surface hardness HRc 59, the relationships of the load and the service life (S-N) diagram were investigated by running test on the power-circulated type gear tester. MIL-L-23699 equivalent synthetic oil at 50° C were fed at a ratio of 0.8 l/min and circumferential velocity of 8.8 m/sec. Also the running performance of the gears, variation of tooth profile errors, affairs of damage, etc. were examined. Types of tooth surface fatigue mere scoring, spalling, or micropitting. A durability limit of Hertz-stress was assumed to be around 2GPa at the load cycle of 108.

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The Deformation Analysis on Tooth Profiles with Electroplated CBN Hard Gear-Honing-Tools

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.426.159 ◽

2012 ◽

Vol 426 ◽

pp. 159-162 ◽

Cited By ~ 2

Author(s):

Man Dong Zhang ◽

H.H. Zhao ◽

Ming Lv

Keyword(s):

Gear Tooth ◽

Tooth Profile ◽

Tooth Surface ◽

Deformation Analysis ◽

Normal Deformation ◽

Gear Honing ◽

Important Means ◽

Profile Errors ◽

Tooth Profile Errors ◽

Exact Analytical Method

Using electroplating CBN hard gear-honing-tools with standard involute, the vicinity of the workpiece tooth pitch circle will be a “mid concave” error, the root of the tooth will be a “dig root” error generally. For the formation factors of the error are more complex, it is difficult to calculate errors with an exact analytical method. To this end, by using Pro/E and ANSYS software, the contact analysis of electroplating CBN hard honing process was simulated. The honed tooth surface normal deformation analysis was the important means to determine extent of tooth profile error, through the normal deformation analysis based on simulation results, the location and extent of normal deformation was determined. Practice shows that the location and extent of the normal deformation has been a certain relationship with processing gear tooth profile errors. It is provided a theoretical basis to make the gear-honing tooth surface modification as possible.

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The Estimation of Vibration of a Pair of Spur Gears Due to Their Tooth Profile Errors (1st Report)

Journal of the Japan Society for Precision Engineering ◽

10.2493/jjspe.56.1424 ◽

1990 ◽

Vol 56 (8) ◽

pp. 1424-1430

Author(s):

Yurong CAI ◽

Teru HAYASHI

Keyword(s):

Tooth Profile ◽

Spur Gears ◽

Profile Errors ◽

Tooth Profile Errors

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Transmission Errors and Noise of Spur Gears Having Uneven Tooth Profile Errors

Journal of Mechanical Design ◽

10.1115/1.3454048 ◽

1979 ◽

Vol 101 (2) ◽

pp. 268-273 ◽

Cited By ~ 5

Author(s):

I. Yuruzume ◽

H. Mizutani ◽

T. Tsubuku

Keyword(s):

Testing Machine ◽

Spur Gear ◽

Tooth Profile ◽

Spur Gears ◽

Profile Error ◽

Gear Noise ◽

Transmission Errors ◽

Profile Errors ◽

Tooth Profile Errors ◽

Gear Rolling

The problems of involute spur gear noise and transmission errors are studied by meshing m3, 40z spur gears. Five kinds of tooth profile errors, such as convex, concave and wave-like, were formed on the test gear teeth by grinding. The value of each tooth profile error is divided into 3 grades, according to the Gear standards of JIS. Transmission errors of 15 test gears and a master gear were measured by a single flank gear rolling tester with a planetary gear system. Gear noise and strains near tooth fillets were measured by running these test gears on a gear noise testing machine with a power absorbing system, in an anechoic room. This paper presents experimental results and studies of the influence of tooth profile error forms on single flank rolling errors, situation of tooth contacts and gear noise while running.

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Based on LS-DYNA Dynamic Simulation Analysis in Electroplated CBN Hard Gear-Honing Processing

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.305.251 ◽

2011 ◽

Vol 305 ◽

pp. 251-254 ◽

Cited By ~ 1

Author(s):

Man Dong Zhang ◽

Ming Lv

Keyword(s):

Simulation Analysis ◽

Form Factors ◽

Tooth Profile ◽

Von Mises Stress ◽

Tooth Surface ◽

Internal Factors ◽

Gear Honing ◽

Von Mises ◽

Profile Errors ◽

Tooth Profile Errors

In general, using electroplating CBN hard gear-honing-tools with standard involute, the vicinity of the workpiece tooth pitch circle will be a “mid concave” error, the root of the tooth will be a “dig root” error. For the form factors of the error are more complicated, it is difficult to calculate errors with an exact analytical method. To this end, by the help of Pro/E and ANSYS/LS-DYNA software, the analysis of electroplating CBN hard honing process was dynamically simulated. Through picking up the datum from analysis results, the von mises stress distribution curve was drafted along engaging points on the tooth surface, this revealed the internal factors of the tooth profile error formation, also determined the location and extent of the tooth profile errors. It is provided a theoretical basis to make the gear-honing-tool tooth surface modification as possible, and the result is consistent with the actual processing.

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