140 Study on the calculation of tooth surface durability of hyper conical gear

2018 ◽  
Vol 2018.53 (0) ◽  
pp. 77-78
Author(s):  
Yosuke SHIOURA ◽  
Tatsuya OHMACHI
Keyword(s):  
Tooth Surface ◽  
Surface Durability ◽  
Conical Gear

Geometrical design of skew conical involute gear drives in approximate line contact

2009 ◽  
Vol 223 (9) ◽  
pp. 2201-2211 ◽  
Author(s):  
S H Wu ◽  
S J Tsai
Keyword(s):  
Power Transmission ◽  
Design Approach ◽  
Line Contact ◽  
Contact Sensitivity ◽  
Axis Ratio ◽  
Edge Contact ◽  
Involute Gear ◽  
Surface Durability ◽  
Gear Drives ◽  
Conical Gear

A novel design for skew conical involute gear drives in approximate line contact is proposed. Such a drive has a contact ellipse with a large major-to-minor-axis ratio, which allows it to overcome the weakness of conical gear drives for application in power transmission. This gearing design approach is characterized by reduced edge contact sensitivity and increased surface durability. The edge contact sensitivity that can arise with this kind of gear drive due to assembly or manufacturing errors is evaluated by analysing the value of the shift of the line of action caused by such errors. The surface durability is evaluated by calculating the Hertz stress. Some guidelines are developed based on the analysis of the influence of the gearing parameters on the edge contact sensitivity and the surface durability made possible using this design approach for conical gear drives in the approximate line contact. The guidelines are summarized and, finally, a practical example is given to demonstrate the feasibility of the approximate line contact design.

scholarly journals Tooth Surface Durability Analysis of Conical Involute Gears

2013 ◽  
Vol 79 (804) ◽  
pp. 2952-2959 ◽  
Author(s):  
Kunihiko MORIKAWA ◽  
Kouji KUMAGAI ◽  
Masanori NAGATA ◽  
Izumi UEDA ◽  
Masaharu KOMORI
Keyword(s):  
Tooth Surface ◽  
Durability Analysis ◽  
Involute Gears ◽  
Surface Durability

917 Tooth Surface Durability of Non-Involute Helical Gears

2000 ◽  
Vol 005.1 (0) ◽  
pp. 331-332
Author(s):  
Kazuteru NAGAMURA ◽  
Kiyotaka IKEJO ◽  
Takahiro KISHI ◽  
Kengo MATSUYAMA
Keyword(s):  
Tooth Surface ◽  
Helical Gears ◽  
Surface Durability

S111055 Tooth Surface Durability Analysis of Conical Involute Gears

2012 ◽  
Vol 2012 (0) ◽  
pp. _S111055-1-_S111055-5
Author(s):  
Kunihiko MORIKAWA ◽  
Kouji KUMAGAI ◽  
Masaharu KOMORI ◽  
Masanori NAGATA ◽  
Izumi UEDA
Keyword(s):  
Tooth Surface ◽  
Durability Analysis ◽  
Involute Gears ◽  
Surface Durability

The Influence of the KHß Factor Determination Method on the Evaluation of the Gear Tooth Surface Durability and Bending Strength

2011 ◽  
Vol 490 ◽  
pp. 135-142
Author(s):  
Stanisław Krawiec
Keyword(s):  
Bending Strength ◽  
Gear Tooth ◽  
Helical Gear ◽  
Tooth Surface ◽  
Strength Analysis ◽  
Load Factor ◽  
Determination Method ◽  
Safety Factors ◽  
The Face ◽  
Surface Durability

The references concerning the strength analysis of gears include a few methods of calculating the value of the face load factor (KHβ). In the paper, discussed are the C2 ISO method [1, 2, 3] and a method presented in [4, 5]. The two methods differ mainly in the way the bending and torsional deformations in the shafts and gears are calculated. On the example of the calculations of the first stage in a two-stage helical gear presented schematically in Fig.1, the influence of the these two different approaches on the value of the safety factors for pitting (SH) and tooth breakage (SF) has been analysed. The influence of four accuracy classes used in the manufacture of gearing (5, 6, 7 and 8) on the value of the safety factors SHand SF has also been evaluated.

Fatigue and Life Prediction

2005 ◽  
pp. 293-309
Keyword(s):  
Fatigue Life ◽  
Stress Analysis ◽  
Fatigue Failure ◽  
Contact Stress ◽  
Life Prediction ◽  
Gear Tooth ◽  
Gear Train ◽  
Tooth Surface ◽  
Bending Stress ◽  
Surface Durability

Abstract This chapter summarizes the various kinds of gear wear and failure and how gear life in service is estimated and discusses the kinds of flaws in material that may lead to premature gear fatigue failure. The topics covered are alignment, gear tooth, surface durability and breakage of gear tooth, life determined by contact stress and bending stress, analysis of gear tooth failure by breakage after pitting, and metallurgical flaws that reduce the life of gears. The chapter briefly reviews some components in the design and structure of each gear and/or gear train that must be considered in conjunction with the teeth to enhance fatigue life.

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