The Effect of Meshing Transmission of Arc Gear by Central Distance Error

2014 ◽  
Vol 889-890 ◽  
pp. 513-517
Author(s):  
Zhong Yi Ren
Keyword(s):  
Contact Line ◽  
Tooth Profile ◽  
Research Results ◽  
Detailed Proof ◽  
Distance Error ◽  
Gear Drive

Arc-gear is sensitive to central distance error, but there havent any literature give detailed proof for how does it sensitive to central distance error. In this article, contact line was analysised, and find that meshing point will move along tooth profile, tansmission ratio will change, overtaking phenomenon appears when there has central distance error, this will cause vibration and noise. The research results is useful for improve arc-gear drive performance.

Effect of tooth waist order parameters of double involute gears on lubrication performance of gear drive

2016 ◽  
Vol 68 (6) ◽  
pp. 671-675 ◽  
Author(s):  
Zhimin Fan ◽  
Wanfeng Zhou ◽  
Ruixue Wang ◽  
Na Wang
Keyword(s):  
Elastohydrodynamic Lubrication ◽  
Reference Value ◽  
Tooth Profile ◽  
Order Parameters ◽  
Content Type ◽  
Oil Film ◽  
Gear Drive ◽  
Involute Gear ◽  
Lubrication Performance ◽  
Involute Gears

Purpose The purpose of this paper is to derive a new lubrication model of double involute gears drive and study the effect of the tooth waist order parameters of double involute gears on lubrication performance. Design/methodology/approach The new lubrication model of double involute gears drive was established according to the meshing characteristics of double involute gears drive and the finite length line contact elastohydrodynamic lubrication theory. Numerical calculation of the lubrication model of gear drive was conducted using the multigrid method. Findings The results show that the oil film necking phenomenon and the oil film pressure peak emerged at the tooth waist order area and the tooth profile ends, and when compared with involute gear, the lubrication performance at the tooth waist order area is better than that at the tooth profile ends. The effect of tooth waist order parameters on lubrication performance at the tooth waist order area was greater than that at other areas. Originality/value This research will promote the application of the double involute gear as soon as possible, and it has the reference value for other types of gears.

Design and Simulation of New Tooth Profile of Flexspline for Harmonic Gear Drive

2015 ◽  
Vol 741 ◽  
pp. 99-107
Author(s):  
Li Zu ◽  
Lan Lan Feng ◽  
Yan Yang Sun
Keyword(s):  
Theoretical Calculation ◽  
Process Simulation ◽  
Cutting Tool ◽  
Parametric Design ◽  
Tooth Profile ◽  
Structure Parameters ◽  
Circular Arc ◽  
Gear Drive ◽  
Calculation Results ◽  
Normal Method

We focused on the parametric design and simulation of new tooth profile “circular arc-involute-circular arc” for flexspline in this paper. Based on the MATLAB software, the basic tooth profile of hob was designed. According to gear generating cutting principle, the simulation of processing for flexspline tooth profile has been realized. By tooth profile normal method, we calculated flexspline tooth profile which is conjugated with the basic tooth profile of the cutting tool, and gave the contrastive studies on process simulation and theoretical calculation. Results show that they are feasible in solving the new tooth profile of flexspline. When changing the key structure parameters, the different changing regulations of flexspline tooth profile can be gained. The research results are meaningful to improve the capacity of harmonic gear drive.

Meshing Theory of New Epicycloids Gear Drive

2011 ◽  
Vol 383-390 ◽  
pp. 5238-5241
Author(s):  
Yun Na Xue ◽  
Yong Wang ◽  
Zheng Wang
Keyword(s):  
3D Model ◽  
Research Result ◽  
Tooth Profile ◽  
Contact Ratio ◽  
Gear Drive ◽  
Profile Equation ◽  
Pure Rolling ◽  
Basic Parameters ◽  
Meshing Characteristics

In order to realize the pure rolling, improve the contact ratio, remove the backlash and raise the life, a new epicycloids gear drive is put forward. The drive part of the particular mechanism is a wheel with the roller tooth and is called the roller gear. And the driven part is the epicycloids gear. The tooth profile equation is achieved and meshing characteristics is also studied. The basic parameters of the new mechanism are researched and the 3D model is achieved. The research result shows that the new drive is workable and the new mechanism has a wide application prospect.

Geometric design and analysis of gear transmission with double circular arc-involute tooth profile

2015 ◽  
Vol 231 (11) ◽  
pp. 2100-2109 ◽  
Author(s):  
Dong Liang ◽  
Bingkui Chen ◽  
Rulong Tan ◽  
Ruijin Liao
Keyword(s):  
Transmission Efficiency ◽  
Tooth Profile ◽  
Gear Transmission ◽  
Motion Simulation ◽  
Circular Arc ◽  
Gear Drive ◽  
Tooth Surfaces ◽  
New Type ◽  
Gear Geometry ◽  
Meshing Characteristics

A novel gear transmission with double circular arc-involute tooth profile is studied in this paper. The generation principle and mathematical models of this proposed gear drive are provided based on gear geometry. The meshing characteristics of tooth surfaces are evaluated according to the analyses of motion simulation, mechanics property and sliding coefficient. The transmission efficiency experiment is based on the developed gear prototype, and a comparison with an involute gear drive is presented. The further study on dynamics analysis and key manufacturing technology will be conducted, and this new type of gear drive is expected to have excellent transmission performance.

Sliding ratio for novel cycloidal gear drive

2017 ◽  
Vol 232 (21) ◽  
pp. 3954-3963
Author(s):  
Lizhong Xu ◽  
Shuang Li ◽  
Wenping Wang
Keyword(s):  
Tooth Profile ◽  
The Novel ◽  
Gear Drive ◽  
Involute Gear ◽  
Wear Life

In this paper, for a novel spur cycloidal gear drive with a modified tooth profile, the equations of the sliding ratio are deduced from those of its tooth profile. Using the sliding ratio equations, the sliding ratio of the novel cycloidal gear drive is investigated and effects of the drive parameters on the sliding ratio are analysed. The sliding ratio of the novel cycloidal gear drive is then compared with that of an involute gear drive. The results show that the sliding ratio of the novel cycloidal gear drive is small and distributed evenly along its rotating angles, which makes the drive operate smoothly and have a long wear life.

The Impact of Meshing Transmission of Arc Gear by Hobbing Method and Central Distance Error

2011 ◽  
Vol 295-297 ◽  
pp. 2534-2539
Author(s):  
Zhong Yi Ren
Keyword(s):  
Current Literature ◽  
Tooth Profile ◽  
Mesh Point ◽  
Transmission Ratio ◽  
Tooth Surface ◽  
Literature Report ◽  
Surface Equation ◽  
Distance Error ◽  
Pressure Angle ◽  
The Impact

The tooth profile of arc gear is no longer arc after hob process, it’s a section of curve which is similar to the arc. Although there have been confirmed that this curve which is similar to the arc can make sure that the transmission ratio and meshing point of two gears will not change ,pressure angle at the meshing point will certainly change, and there is also no literature report how much this curve has impact on pressure angle. The impact of meshing transmission of arc gear by central distance error researched by current literature is based on arc tooth profile, this study is not suitable for the tooth profile processed by hob, and there is no literature report how much central distance error has impact on transmission ratio, pressure angle and mesh point of arc gear which processed by hob. In this article, the author has work out this problem by use tooth surface equation.

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