Design of high-reduction hypoid gears meshing in plane of action

Suzuki, Atsushi; Tarutani, Ichiro; Aoyama, Takayuki

doi:10.1299/jamdsm.2017jamdsm0068

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…To date, the studies of face gears have mainly focused on the geometric structure, meshing behavior, and kinematics characteristics. Face gear is thought to inherit the periodic and smooth meshing characteristics of involute gears, but less attention has been paid to the impact characteristics during meshing process [16,17]. For a crown face gear with point contact, impact impacts are easily caused by factors such as contact deformation and meshing point fluctuations due to design, machining errors, or changes conditions [18].…”

Section: Introductionmentioning

confidence: 99%

Study on Impact Characteristics of Multistage Double Crown Face Gear Pairs considering Ratio Switching under Variable Conditions

Chen

Min

Zhang

et al. 2020

Shock and Vibration

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This paper presents a new transmission mechanism with multistage face gears as the core components for realizing variable speeds with differential meshing. To improve face gear transmission smoothness, suppress meshing resonance, reduce noise, and optimize power transmission performance during the gear shifting process, load distribution between meshing teeth during the transmission process and impact loads during various shifting stages must be determined. Herein, we present a gear impact model considering double crown gear meshing configuration, contact deformation, variable working conditions, and jump impact at meshing points. A single-stage face gear pair is considered as object that the impact characteristics are comparatively studied under four conditions: with/without load and constant/variable speed. The results were used to analyze transient characteristics of the crown gear under contact deformation or frequent shifting impact. Based on this, the impact characteristics of multistage face gear pairs between ratio switching were extendedly investigated under four input conditions: constant/variable torque or constant/variable speed. The results were used to determine the meshing force and impact force fluctuation characteristics of multistage face gear pairs while adapting to various loads and continuous acceleration/deceleration. The proposed model can be beneficial to evaluate the feasibility of multistage gear structures with crown configuration and to obtain boundary conditions for transmission systems.

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Section: Introductionmentioning

confidence: 99%

Study on Impact Characteristics of Multistage Double Crown Face Gear Pairs considering Ratio Switching under Variable Conditions

Chen

Min

Zhang

et al. 2020

Shock and Vibration

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“…topography design in a micro scale was developed for spiral bevel and hypoid gears by Ding (Ding et al, 2023). Suzuki (Suzuki et al, 2017) proposed a method of directly designing the surface of action of a hypoid gear. A plane was selected as the surface of action to achieve hypoid gears with a higher performance than face gears.…”

mentioning

confidence: 99%

Investigation of the effect of multi-segment cutter section on meshing characteristics for face-hobbed hypoid gears

CAI,

SONG,

LIANG

et al. 2023

JAMDSM

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Hypoid gears are widely used in the transmission systems of automobiles, ships and helicopters because of their high load carrying capacity, high degree of overlap and smooth transmission (Sheveleva et al., 2007). As an important part of hypoid gear design and manufacturing, the type of cutting edge curve affects the performance of the gear pair directly and the design of cutter section is a significant direction to improve the performance of gear. The cutter cross-section with an additional transition section between the major cutting edge and the fillet segment is equivalent to the root modification of gear teeth, which can effectively avoid tooth root edge contact, but the influence laws on tooth root bending stress, transmission error and meshing stiffness are not clear. Thus, it is necessary to study the influence law of tool parameters on meshing performance for this type of cutter cross-section.In recent years, a large number of scholars have researched the theory of tooth surface forming and tooth surface modeling methods for hypoid gears. Litvin (Litvin et al., 1991) established a gear surface modeling method based on tool geometry based on the kinematics of face-hobbed hypoid gears. Shih (Shih et al., 2007) investigated the mathematical modeling method of generalized tooth surface based on gear transmission theory and differential geometry theory. Based on grinding mechanism and machine-tool settings of the Gleason modified roll hypoid grinder, a mathematical model for the tooth geometry of spiral bevel and hypoid gears is developed by Lin (Lin et al., 1997). By using theory of gearing, the mathematical representation of gear tooth surfaces was derived, Vimercati (Vimercati, 2007) proposed a mathematical model able to represent tooth surfaces of a complex gear drive for hypoid gears cut by face-hobbing method. Peng (Peng et al., 2020) established the mathematical tooth flank model by simulating the actual generation process. Then, a novel collaborative machine tool settings compensation considering both the tooth flank geometric and physical performances was proposed. Focusing on comprehensive effect of both macro and micro geometries, accurate flank geometric

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Fundamental study on estimation of tooth contact area based on combined image from temperature monitor images of tooth surface with a high-speed-camera thermography and on meshing vibration for high reduction ratio hypoid gear with a three-tooth pinion

NAKAGAWA,

HIROGAKI,

AOYAMA

et al. 2024

Transactions of the JSME (In Japanese)

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Design of high-reduction hypoid gears meshing in plane of action

Cited by 4 publications

References 7 publications

Study on Impact Characteristics of Multistage Double Crown Face Gear Pairs considering Ratio Switching under Variable Conditions

Study on Impact Characteristics of Multistage Double Crown Face Gear Pairs considering Ratio Switching under Variable Conditions

Investigation of the effect of multi-segment cutter section on meshing characteristics for face-hobbed hypoid gears

Fundamental study on estimation of tooth contact area based on combined image from temperature monitor images of tooth surface with a high-speed-camera thermography and on meshing vibration for high reduction ratio hypoid gear with a three-tooth pinion

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