Main operating charac teristics and quality assessment of worm gear drives

Dudás, Illés

doi:10.1016/b978-190399661-4/50011-3

Cited by 10 publications

(16 citation statements)

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“…Under normal conditions, the transmission efficiency of synchronous belt mechanism η 1 = 0.96 ∼ 0.98. The transmission efficiency of worm wheel and worm mechanism (η 2 ) can be calculated as [11]:…”

Section: Stretchermentioning

confidence: 99%

A small sample stretcher for in-situ small angle X-ray scattering measurement

Han

et al. 2019

J. Inst.

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A small sample stretcher for in-situ measurement of small angle X-ray scattering (SAXS) was developed, which consists of stretch, transmission, detection and control systems. The basic parameters of the stretcher are: tension ⩾ 400 N, 3 mm/min ⩽ stretching speed ⩽ 50 mm/min, sample length ⩽ 30 mm, stroke ⩾ 80 mm, and resolution = 50 μm. The stretcher is compact and has low stretching speed and convenient remote control. It is suitable for in-situ SAXS measurements on stretching of carbon fibers, polyethylene and other samples. Such measurement were carried out with high density polyethylene (HDPE) on the SAXS instrument at the 1W2A station of Beijing Synchrotron Radiation Facility (BSRF). The result verified the effectiveness of the stretcher.

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Section: Stretchermentioning

confidence: 99%

A small sample stretcher for in-situ small angle X-ray scattering measurement

Han

et al. 2019

J. Inst.

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“…The developed method is applied and illustrated on the Archimedes worm wheel. The Archimedes worm drive is a classic cylindrical worm drive, and it is widely used in industrial fields [36,37]. Though the Archimedes worm drive has a long history, its meshing theory has not been studied in depth, especially the computing principle for tooth surface singularity.…”

Section: Introductionmentioning

confidence: 99%

Direct method to determine singular point of enveloped surface and its application to worm wheel tooth surface

Cui,

Zhao,

Meng

et al. 2024

Proc. R. Soc. A.

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A novel methodology for determining the singular point of an enveloped surface is put forward. Unlike some existing methods, the presented method starts directly from the equation of the enveloped surface instead of that of the generating surface, and it is thus called a direct method. The calculation for the normal vector of the enveloped surface is well simplified with the help of the moving frame approach, which makes the presented method feasible. The singularity condition equation is extracted by using the theory of linear algebra. For singular points with different properties, proper solving techniques are established, including resultant elimination and simple elimination. Applying the developed method, the undercutting characteristics of the Archimedes worm wheel are investigated from the perspective of spatial meshing. The numerical results demonstrate that the worm wheel generally has one undercutting limit line, whose trend is along the tooth width of the wheel. Locating on one side of the tooth surface and near the tooth root is a dangerous part of the worm wheel undercutting. The proposed method is beneficial for the development of gear meshing science.

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“…The worm-wheel gears are one of the most promising options in the electro-mechanical systems for high transmission ratio and energy efficiency. [1][2][3][4] Contrary to the other types of transmission elements such as bevel and spur gears, where ample space, a large number of gears, and a complex gear train are required to provide the desired gear ratio, the worm-wheel gear requires small space and a single gear set to generate the large transmission ratio. [5][6][7][8] As a result, worm-wheel gears allow the use of high velocity motors in robotics applications involving slow motion without redirecting the motor torque along a complex gear train.…”

Section: Introductionmentioning

confidence: 99%

“…22,23 The friction causes nonlinearities that can result in undesired stick-slip motion, tracking errors, and instability in the control of the system. 2,24 Unfortunately, there exists only a handful of works reported to the research community to address the relevant issues regarding worm-wheel gear driven systems. A friction model based on a wedge-like planar transmission was introduced by Dohring et al, 25 to address the friction losses of worm-wheel gear driven robots.…”

Section: Introductionmentioning

confidence: 99%

Control of a worm-wheel gear driven rescue robot with friction compensation and its experimental verification

Shoaib,

Kim,

Park

et al. 2023

Advances in Mechanical Engineering

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This paper presents the control of a rescue robot driven by the worm-wheel gear transmission. In the modeling process, the load-dependent friction of the worm-wheel gear is considered, and the governing equations for static and dynamic analyses are formulated. Especially we examine the dependency of break-in joint torques on the loading torque and directionality of motion. The friction parameters of the worm-wheel gear of a physical rescue robot are identified through experimental investigation. A friction compensation controller is then designed based on the modeling results and experimental operating conditions. And the designed controller is applied to a dual-arm rescue robot to validate its effectiveness.

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Main operating charac teristics and quality assessment of worm gear drives

Cited by 10 publications

References 0 publications

A small sample stretcher for in-situ small angle X-ray scattering measurement

A small sample stretcher for in-situ small angle X-ray scattering measurement

Direct method to determine singular point of enveloped surface and its application to worm wheel tooth surface

Control of a worm-wheel gear driven rescue robot with friction compensation and its experimental verification

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