Research on the dynamic transmission error of a spur gear pair with eccentricities by finite element method

Wang, Guangjian; Lin, Chao; Liu, Yü; Zou, Shuaidong

doi:10.1016/j.mechmachtheory.2016.11.006

Cited by 50 publications

(19 citation statements)

References 16 publications

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“…The most critical components of a gearbox are the gears and bearings. The deterioration of a gear appears at the teeth [20,21], harmonic drive gears are damaged by fatigue fractures [22], and bearings are typically subjected to failures at the rolling elements or the inner or outer race [21]. The damage accumulates over time and is caused mainly by load (forces and velocity) [23,24], high temperature [25], bad lubrication [26], or manufacturing defects.…”

Section: The Concept Of Robot Wearmentioning

confidence: 99%

Method for Robot Manipulator Joint Wear Reduction by Finding the Optimal Robot Placement in a Robotic Cell

et al. 2021

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We describe a method for robotic cell optimization by changing the placement of the robot manipulator within the cell in applications with a fixed end-point trajectory. The goal is to reduce the overall robot joint wear and to prevent uneven joint wear when one or several joints are stressed more than the other joints. Joint wear is approximated by calculating the integral of the mechanical work of each joint during the whole trajectory, which depends on the joint angular velocity and torque. The method relies on using a dynamic simulation for the evaluation of the torques and velocities in robot joints for individual robot positions. Verification of the method was performed using CoppeliaSim and a laboratory robotic cell with the collaborative robot UR3. The results confirmed that, with proper robot base placement, the overall wear of the joints of a robotic arm could be reduced from 22% to 53% depending on the trajectory.

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Section: The Concept Of Robot Wearmentioning

confidence: 99%

Method for Robot Manipulator Joint Wear Reduction by Finding the Optimal Robot Placement in a Robotic Cell

et al. 2021

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“…The effects of damping ratio and excitation amplitude on the frequency response curve were studied. Reference [4] verified that backlash is the main source of positioning error and impact through dynamic response analysis. Reference [5] applied a multi-scale method to analyze the nonlinear torsional instability of the flexible shaft gear system.…”

Section: Introductionmentioning

confidence: 99%

Time-varying Response Analysis of Spur Gear System

Liu

2021

E3S Web Conf.

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In this paper, a space-driven two-stage spur gear system is taken as the research object, and a 10 DOF dynamic model is established. Considering the high load characteristics of the space drive system and the time-varying stiffness and tooth clearance of the gear system, a nonlinear dynamic response analysis was performed. The characteristics of the vibration acceleration, shock and transmission error of the gear system are studied in this paper. This paper analyzes the relationship between backlash and return difference, and derives the theoretical formula between the two. The time-varying stiffness was corrected to make the theoretical model closer to reality. The research in this paper enriches the study on space drive systems and high load gear systems.

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“…Moreover, Liu et al, 12 analyzed the influence of bearing clearance and tooth side clearance on the gear meshing force. Wang et al, 13 investigated the time-varying clearance caused by the gear eccentricity and load changes and analyzed the influence of load and gear eccentricity on the dynamic transmission error of the sys-tem. Liu et al, 14 analyzed the effect of the gear meshing force on the tooth surface wear and studied the effect of the tooth surface wear on the dynamic transmission error of gear pairs.…”

Section: Introductionmentioning

confidence: 99%

Model and Characteristic Simulation Analysis of a Two-Speed Transmission System

Chen¹,

Xie²,

Liu³

et al. 2021

The International Journal of Acoustics and Vibration

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One of the main tasks in the research of a helicopter two-speed transmission system was to improve its dynamic characteristics. For the low gear mode of the system, a dynamic model was established by using the lumped parameter method, the method of Runge-Kutta was used to solve the nonlinear dynamic system equations. The effect of the gear module on the dynamic transmission error, dynamic load of the gear pair and the dynamic windup angle of a one-way clutch were studied. And the effect of the one-way clutch torsional stiffness on the dynamic transmission error and dynamic load of the gear pair was also studied. The results show that: 1)~the dynamic transmission error of the gear pair decreases and the dynamic load of the gear pair increases with the increase of the gear module at the lower range of excitation frequencies; 2)~the dynamic windup angle of the one-way clutch increases with an increase of the gear module. 3)~the dynamic transmission error of the gear pair and the maximum dynamic load increases with an increase of the one-way clutch torsional stiffness at the lower and medium range of excitation frequencies. The above results can provide reference for the subsequent upgrade and improvement of the two-speed transmission system.

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Research on the dynamic transmission error of a spur gear pair with eccentricities by finite element method

Cited by 50 publications

References 16 publications

Method for Robot Manipulator Joint Wear Reduction by Finding the Optimal Robot Placement in a Robotic Cell

Method for Robot Manipulator Joint Wear Reduction by Finding the Optimal Robot Placement in a Robotic Cell

Time-varying Response Analysis of Spur Gear System

Model and Characteristic Simulation Analysis of a Two-Speed Transmission System

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