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Reliability Analysis Method for Transmission Accuracy of Industrial Robot Reducer with Cracked Gears

An industrial robot, transmission precision technology, applied in instruments, geometric CAD, design optimization/simulation, etc., can solve problems such as transmission precision influence

Active Publication Date: 2021-07-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

When the gear of the RV reducer has cracks, its transmission accuracy will inevitably be affected, but no relevant effective method has been proposed to solve the problem of reliability analysis of its transmission accuracy considering various uncertain inputs

Method used

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  • Reliability Analysis Method for Transmission Accuracy of Industrial Robot Reducer with Cracked Gears
  • Reliability Analysis Method for Transmission Accuracy of Industrial Robot Reducer with Cracked Gears
  • Reliability Analysis Method for Transmission Accuracy of Industrial Robot Reducer with Cracked Gears

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Embodiment Construction

[0052] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0053] The present invention analyzes the relationship between gear crack growth and transmission performance through dynamic simulation, and then establishes a transmission error distribution model in combination with probability density evolution theory and Dicratic function, and further evaluates the transmission accuracy reliability of cracked gears. The invention applies the probability density evolution and the Dikla function to the reliability evaluation of mechanical parts, and can realize high-precision and high-efficiency description of the multi-degree-of-freedom linear and nonlinear mech...

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Abstract

The invention discloses a reliability analysis method for the transmission precision of an industrial robot reducer containing cracked gears. The method firstly analyzes the uncertainty factors of the industrial robot reducer; secondly, the finite element simulation method is used to analyze the meshing stiffness of the cracked gears, Further solve the dynamic equation to calculate the transmission error of the cracked gear; then use the probability density evolution theory and the Dicras function to calculate the probability density function of the output error of the reducer of the industrial robot; finally use the Monte Carlo simulation method to calculate the industrial robot with the cracked gear Reducer transmission accuracy and reliability. The invention applies the probability density evolution and the Dikla function to the reliability evaluation of mechanical parts, and can realize high-precision and high-efficiency description of the multi-degree-of-freedom linear and nonlinear mechanical structure dynamic performance response description and reliability under the input of uncertainty factors. sexual calculation.

Description

technical field [0001] The invention belongs to the field of reliability of mechanical parts, and in particular relates to a reliability analysis method for transmission accuracy of an industrial robot reducer with cracked gears. Background technique [0002] Industrial robots are developing towards high speed, high precision, high reliability, multiple degrees of freedom and increased rigidity, and key areas also require heavy load or high response speed. As one of the core components of industrial robots, the reducer is the core of mechanical transmission, and its transmission accuracy and reliability affect the speed and accuracy of the robot. Due to the influence of random factors such as manufacturing errors, assembly clearances, material properties, and use environments, the transmission performance of industrial robot reducers, that is, RV reducers, is random. Therefore, in order to improve the transmission accuracy of RV reducers, these factors need to be considered....

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F30/23G06F119/02
Inventor 张小玲姜自昊张雪莲汪忠来
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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