Optimizing cyclic gearless electric drives with a reduced-speed section

Sapsalev, A. V.

doi:10.3103/s1068798x12050218

Cited by 6 publications

(5 citation statements)

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“…(3) For modes 1,2,3,11,17,18,19, and 20, the track amplitude A has little effect on the vibration amplitudes of the first-step movable teeth. For modes 10, 12, and 15, the vibration amplitudes of the first-step movable teeth are largest at A � 3.6 mm.…”

Section: Effects Of the Sine Track Amplitudementioning

confidence: 99%

“…(3) For the modes 2, 3,6,11,17,18,19, and 20, the natural frequency of the drive system does not change with the number of the movable teeth. For mode 2, the relative error between the natural frequencies for different tooth number is about 1.8%.…”

Section: Effects Of the Movable Tooth Radius Rotation Radius And Momentioning

confidence: 99%

“…In 2011, the tooth profile and strength of a swingmovable tooth drive was analyzed [10]. In 2012, a movable tooth drive was optimized and used in an electric drive system [11]. In 2013, a ball tooth thin-plate drive system was designed and used for operating robots [12].…”

Section: Introductionmentioning

confidence: 99%

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Vibration Analysis of a Two‐Step Sine Movable Tooth Drive

Yang

2018

Shock and Vibration

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In this study, a 3D model of a two-step sine movable tooth drive is developed in the UG software. The finite element model (FEM) analysis package, ANSYS, is used to calculate the natural frequencies and vibration modes of the drive system. The results show that the first twenty natural frequencies can be classified into five families, including the total system vibration mode, single-element vibration mode, two-element vibration mode, three-element vibration mode, and four-element vibration mode. The effects of the system parameters on the natural frequencies and the vibration modes are investigated. The track amplitude, the movable tooth radius, the radius of the movable tooth rotation, and the number of movable teeth affect the natural frequencies and vibration modes of the drive system.

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Section: Effects Of the Sine Track Amplitudementioning

confidence: 99%

Section: Effects Of the Movable Tooth Radius Rotation Radius And Momentioning

confidence: 99%

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Vibration Analysis of a Two‐Step Sine Movable Tooth Drive

Yang

2018

Shock and Vibration

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“…In the 1980s and 1990s, the sine-ball speed reducer was studied, and the optimized design of the single-swing-tooth transmission was completed (Keith, 1982;Imase, 1997;Terada et al, 1995). Since the 21st century, a toothless gear reducer was developed and optimized (Sapsalev, 2004(Sapsalev, , 2012. A reciprocating motion type ball reducer was proposed which consists of an input rotor, a fixed rotor, a reduced motion rotor, several reciprocating motion sliders and two rows of steel balls.…”

Section: Introductionmentioning

confidence: 99%

Meshing efficiency for sinusoidal movable tooth drive

Men

2019

JAMDSM

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Sine movable tooth drive has the smallest radial size. Working efficiency is one of the important factors of the performance evaluation of the drive. Here, based on analyzing entrainment speed and forces of sine movable tooth drive, the equations of the minimum oil film thickness and meshing efficiency for the drive is proposed. The minimum oil film thickness and meshing efficiency of the drive is studied, and the changes of the meshing efficiency along with main parameters are analyzed. Results show that the minimum oil film thickness between the movable teeth and central input shaft is higher than that between the movable teeth and shell, and the meshing efficiency of the drive is between 79.74% and 84.67%, and the average efficiency is 82.48% which is near the experimental result of 82.25%.

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“…Liang et al 10 did the tooth profile analysis and strength calculation of the swing movable tooth drive. Sapsalev 11 adjusted the movable tooth drive and used it in an electric drive system. Nam et al 12 designed a ball tooth thin plate-type drive to power the robots.…”

Section: Introductionmentioning

confidence: 99%

Elastic hydrodynamic lubrication analysis for a sine movable tooth drive

Song

2018

Advances in Mechanical Engineering

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The sine movable tooth drive has small radial dimension such that the heat, caused by friction, becomes an important factor in deciding its load-carrying ability. It is important to determine the amount of tooth lubrication in order to reduce the heat caused by the friction. This study provides equations for the meshing performance and provides the forces for the sine movable tooth drive. Using these equations, the minimum oil film thickness for the drive system is investigated. Results show that the minimum film thickness between the movable tooth and input shaft or shell changes periodically along the input shaft rotation angle. A large movable tooth radius and a movable tooth rotation radius could increase the film thickness between the movable tooth and the input shaft or the shell. In addition, a large speed ratio could increase the film thickness between the movable tooth and the input shaft, but this would also decrease the film thickness between the movable tooth and the shell. A large sine amplitude could increase the film thickness between the movable tooth and the input shaft, but this does not change the film thickness between the movable tooth and the shell. Under normal operation speeds, the hydrodynamic lubrication condition occurs between the movable tooth and the input shaft, and the partial membrane hydrodynamic state occurs between the movable tooth and the shell.

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Optimizing cyclic gearless electric drives with a reduced-speed section

Cited by 6 publications

References 0 publications

Vibration Analysis of a Two‐Step Sine Movable Tooth Drive

Vibration Analysis of a Two‐Step Sine Movable Tooth Drive

Meshing efficiency for sinusoidal movable tooth drive

Elastic hydrodynamic lubrication analysis for a sine movable tooth drive

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