Thermal analysis of helical gear transmission system considering machining and installation error

Li, Wei; Zhai, Pengfei; Jingyun, Tian; Luo, Biao

doi:10.1016/j.ijmecsci.2018.09.036

Cited by 39 publications

(17 citation statements)

References 21 publications

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“…The minimum tooth number for the equivalent gear of the bevel gear without undercutting is equal to the minimum teeth number of the spur gear without undercutting, which means that z vbmin =22. For bevel gear manufactured with a rack-shaped cutter with a bottom clearance, z bmin (rounded to 18) is obtained by substituting z vbmin =22 and δ=35° in formula (7), as shown in Table 1. Considering the bottom clearance c of the rack-shaped cutter, the minimum teeth numbers of the three kinds of involute gears are high.…”

Section: Z Min Of Involute Gear Manufactured Rank-shaped Cutters Consmentioning

confidence: 99%

“…Involute gear transmission has been widely used because of its unique technical advantages. Research on stress distribution [2,3], tolerance analysis [4] noise [5], vibration [6] and thermal analysis [7] in geared systems have been centred on gear-specific components. However, for the meshing of specific teeth number in a gear pair, an interference exists between the tip of the teeth on the pinion and the fillet or root of the teeth on the gear [8].…”

Section: Introductionmentioning

confidence: 99%

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New Insights Into the Minimum Teeth Number and Modification Coefficient of Standard Involute Gears Without Undercutting

Zhang¹,

2021

Preprint

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The calculation equations for the minimum teeth number and the minimum modification coefficient of standard involute gears without undercutting are inaccurately described and researched in many studies. These errors are knowledge blind spots in mechanical engineering that have been introduced into the design and manufacturing of standard involute gears. Furthermore, these errors are continually imparted to tens of thousands of students in colleges every yearly. Racks have been incorrectly regarded as the rack-shaped cutters in the derivation of the calculation equations. The theoretical research, numerical simulation and experiments of the undercutting phenomenon of standard involute gears manufactured using rack-shaped cutters are presented. Firstly, theoretical analysis and calculation of the minimum teeth number and the minimum modification coefficient of standard involute gears without undercutting are performed. Subsequently, the correct minimum teeth number and the minimum modification coefficient without undercutting are deduced. The computer simulations of the theoretical calculations are then examined considering the necessary cases. Experiments of standard involute spur gears with z = 10, 12, 17 and 22 are conducted, thereby validating the research. This study addresses the long-standing errors regarding the traditional undercutting phenomenon and provides an effective theoretical guide for gear design and manufacturing.

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Section: Z Min Of Involute Gear Manufactured Rank-shaped Cutters Consmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New Insights Into the Minimum Teeth Number and Modification Coefficient of Standard Involute Gears Without Undercutting

Zhang¹,

2021

Preprint

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“…H e is added to the surface of worm tooth and roller respectively according to the distribution coefficient and H i is added to the inner pitch circular surface of each roller. (17)…”

Section: Simulation Analysis Of Temperature Fieldmentioning

confidence: 99%

“…After verifying the accuracy of the results, the simulation analysis method can be used to provide theoretical guidance for future research. Using this method, Li et al [17,18] calculated the temperature field of the gear, and carried out experimental comparison to verify the effectiveness of the simulation analysis. Koffe et al [19] proposed a numerical model of friction power loss in gear transmission, and verified the accuracy of the model through experiments.…”

Section: Introductionmentioning

confidence: 99%

Temperature Field Simulation and Experimental Study of Anti-backlash Single-Roller Enveloping Hourglass Worm Gear

Wang

Deng

2020

Chin. J. Mech. Eng.

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In gear transmission, temperature rise has a non-negligible impact on the accuracy, noise and transmission efficiency. However, there is no relevant research on the temperature rise of the anti-backlash single-roller enveloping hourglass worm (ASEHW) gear. To solve this problem, based on tribology principle and Hertz contact theory, the thermal power calculation method of the ASEHW gear was proposed for the first time and thermal analysis was carried out by Ansys software. The bulk temperature of the ASEHW gear under four different rotating speed (300 r/min, 600 r/min, 900 r/ min, 1200 r/min) is calculated. The main factors causing temperature rise of the ASEHW gear are analyzed theoretically. Meanwhile, an experimental study is performed to verify the simulation results and validate the theory methods. The theory presented in this paper provides a solution for the thermal power calculation of ASEHW gear. This research provides a theoretical basis for further optimization of ASEHW gear.

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“…It includes investigations on the shape of the gearbox housing, the study of the influence of the type of lubricant used, the study of the influence of the characteristics of the clutches cooperating with the transmission and many more [1,6,7,9]. The tendency to improve the well-known models and the development of new transmission models is also noticeable [2,5,8]. Undoubtedly, these are valuable scientific works, but it should be noted that, in the case of gearboxes, the main source of vibrations is the meshing zone, which involves the issues connected with the surface of the contact area and load distribution along the line of action.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Impact of Non-Parallelism of Shafts' Axes on the Contact Area of Cooperating Teeth and Gearbox's Components Vibrations

Juzek

2019

SJSUT.ST

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In this article, the results of experimental research and simulation studies using a geometric model made in CAD software were presented. The aim of the conducted research and simulations was to determine the influence of nonparallelism of shafts' axes on gearbox vibroactivity and the contact area of the cooperating teeth. The results showed that the change of the non-parallelism of shafts' axes significantly affects the vibrations of selected components of the operating gearbox and the contact area of cooperating teeth.

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Thermal analysis of helical gear transmission system considering machining and installation error

Cited by 39 publications

References 21 publications

New Insights Into the Minimum Teeth Number and Modification Coefficient of Standard Involute Gears Without Undercutting

New Insights Into the Minimum Teeth Number and Modification Coefficient of Standard Involute Gears Without Undercutting

Temperature Field Simulation and Experimental Study of Anti-backlash Single-Roller Enveloping Hourglass Worm Gear

Analysis of the Impact of Non-Parallelism of Shafts' Axes on the Contact Area of Cooperating Teeth and Gearbox's Components Vibrations

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