Transmission precision reliability analysis method for industrial robot speed reducer with crack gear

A technology for industrial robots and transmission accuracy, which is applied in the direction of instruments, electrical digital data processing, geometric CAD, etc., and can solve problems such as the influence of transmission accuracy

Active Publication Date: 2020-04-17
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 metho

Method used

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  • Transmission precision reliability analysis method for industrial robot speed reducer with crack gear
  • Transmission precision reliability analysis method for industrial robot speed reducer with crack gear
  • Transmission precision reliability analysis method for industrial robot speed reducer with crack gear

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Embodiment Construction

[0052] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0053] The invention analyzes the relationship between the gear crack growth condition and the transmission performance through dynamic simulation, and then combines the probability density evolution theory and the Dikla function to establish a transmission error distribution model, and further evaluates the transmission accuracy and reliability of the cracked gear. The invention applies the probability density evolution and the Dikla function to the reliability evaluation of mechanical parts, and can achieve high-precision and high-efficiency description of the dynamic performance of linear and...

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Abstract

The invention discloses a transmission precision reliability analysis method for an industrial robot speed reducer with a crack gear. The method comprises the steps of analyzing firstly, uncertainty factors of the industrial robot speed reducer; secondly, analyzing the meshing rigidity of the gear with the cracks by using a finite element simulation method, further solving a kinetic equation, andcalculating a transmission error of the gear with the cracks; then calculating a probability density function of the output error of the industrial robot speed reducer by applying a probability density evolution theory and a Dirac function; and finally, calculating the transmission precision reliability of the industrial robot speed reducer with the crack gear by using a Monte Carlo simulation method. According to the method, probability density evolution and a Dickelas function are applied to reliability evaluation of mechanical parts, and multi-degree-of-freedom linear and nonlinear mechanical structure dynamic performance response depiction and reliability calculation under uncertainty factor input can be described in a high-precision and high-efficiency mode.

Description

Technical field [0001] The invention belongs to the field of reliability of mechanical parts, and specifically relates to a method for analyzing the reliability of transmission accuracy of an industrial robot reducer with cracked gears. Background technique [0002] Industrial robots are developing in the direction of high speed, high precision, high reliability, multiple degrees of freedom and improved rigidity. 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 error, assembly clearance, material performance, use environment, etc., the transmission performance of industrial robot reducer, that is, RV reducer, is random. Therefore, in order to improve the transmission accuracy of RV reducer, these factors need to be consi...

Claims

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Application Information

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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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