Method for calibrating friction coefficients of tumbling chip abrasive
A technology of friction coefficient and rolling and throwing, which is applied in the direction of mechanical devices, measuring devices, instruments, etc., can solve the problems of calibration of friction coefficient of rolling and polishing grinding blocks, etc., and achieve the effect of easy implementation and accurate calibration results
Active Publication Date: 2017-12-01
TAIYUAN UNIV OF TECH
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Problems solved by technology
[0003] In order to solve the above technical problems, the present invention provides a method for calibrating the friction coefficient of the rolling and polishing abrasive block to solve the calibration problem of the friction coefficient of the rolling and polishing abrasive block
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[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than All the embodiments; based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.
[0030] In order to verify the present invention by comparison, the tumbling and polishing block used in the test is a spherical brown corundum tumbling and polishing block with a diameter of Φ3mm that is more commonly used in the tumbling finishing process. A method for calibrating the friction coefficient of the rolling and polishing abrasive block proposed by the embodiments of the present invention mainly includes...
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Abstract
The invention belongs to the technical field of finishing process and provides a method for calibrating friction coefficients of a tumbling chip abrasive. The method comprises steps as follows: a tumbling chip abrasive repose angle testing device is used for a dropping experiment, and an experimental value alpha of a tumbling chip abrasive repose angle is obtained; a model is established through discrete element simulation for simulation experiments under the condition of different contact parameters, and simulation values beta of the tumbling chip abrasive repose angles are obtained; simulation experiments are performed again with a response surface experimental method, and relative error delta between each simulation value beta and the experimental value alpha of the tumbling chip abrasive repose angle is obtained; regression analysis is performed, and the friction coefficients of the tumbling chip abrasive are obtained. The method for calibrating the friction coefficients is simple, reliable and easy to implement, all friction coefficients of the tumbling chip abrasive can be calibrated, and a basis is laid for optimizing of parameters of a barrelling finishing process.
Description
technical field [0001] The invention belongs to the technical field of finishing processing, and in particular relates to a method for calibrating the friction coefficient of rolling and polishing abrasive blocks. Background technique [0002] Discrete element method is a numerical simulation method used to solve the problem of discontinuous media, which can predict the dynamic behavior of discrete particles, and has a high application prospect in the research field of barrel finishing. When using the discrete element method to analyze the mechanical behavior of the tumbling and polishing grinding block in the process of tumbling and finishing, the setting of the friction coefficient of the tumbling and polishing grinding block has a great influence on the analysis results; The friction coefficient of the polishing block is different, so it is necessary to measure the friction coefficient of the tumbling and polishing block under specific conditions. At present, there are n...
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IPC IPC(8): G01N19/02
CPCG01N19/02
Inventor 李文辉郝志明李秀红高炜武锋锋杨胜强王秀枝
Owner TAIYUAN UNIV OF TECH