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A fuzzy rough DEMATEL-ANP-based error source diagnosis method for high-end precision bearings in a manufacturing process

A technology of precision bearing and manufacturing process, applied in the field of bearing manufacturing and processing, it can solve the problems of high complexity accumulation and coupling, affecting the fatigue level of workers, difficulty in diagnosing error sources, etc., to achieve the effect of fast programming

Pending Publication Date: 2019-01-11
BEIFANG UNIV OF NATITIES
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  • Application Information

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Problems solved by technology

Generally speaking, multiple error sources are transmitted, accumulated and coupled with high complexity in the multi-station manufacturing process of high-end precision bearings, which brings great difficulties to the diagnosis of error sources
Existing methods only consider the impact of a single error source on manufacturing accuracy on the basis of dimensional deviation, and do not make full use of the experience and wisdom of diagnostic experts to analyze multiple error sources in the manufacturing process
At the same time, there are also complex influence relationships among multiple error sources in the manufacturing process of high-end precision bearings. For example, the temperature and humidity of the environment will affect the psychological state of workers, which will lead to workers' desire for quickness and affect manufacturing quality; Proficiency will also affect the degree of fatigue of workers during operation, etc. These phenomena make how to deal with the relationship between error sources the key to the diagnosis of error sources in the manufacturing process of high-end precision bearings

Method used

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  • A fuzzy rough DEMATEL-ANP-based error source diagnosis method for high-end precision bearings in a manufacturing process
  • A fuzzy rough DEMATEL-ANP-based error source diagnosis method for high-end precision bearings in a manufacturing process
  • A fuzzy rough DEMATEL-ANP-based error source diagnosis method for high-end precision bearings in a manufacturing process

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Effect test

Embodiment

[0061] A high-end precision bearing manufacturer needs to diagnose the source of errors in the manufacturing process.

[0062] The implementation steps are as follows:

[0063] Step 1: Establish a high-end precision bearing manufacturing process error source set Y, Y contains N error source factors, where N=11;

[0064] Y is further divided into M error source dimensions: Y 1 ,Y 2 ,...,Y M , where M=4;

[0065] Y 1 ,Y 2 ,...,Y M include n 1 ,n 2 ,...,n M error source factors; for the error source dimension Y g ,Have means Y g The error source factors contained in , where g=1,2,..,M; n 1 ,n 2 ,...,n M meet n 1 +n 2 +...+n M = N; where:

[0066] (1)Y 1 Indicates artificial dimensions, including n 1 error source factors: y 1,1 =y 1 = Worker's physiological characteristics, y 1,2 =y 2 = worker's desire for quickness, y 1,3 =y 3 = degree of worker fatigue, y 1,4 =y 4 = worker's fluke mentality, that is, n 1 = 4;

[0067] (2)Y 2 Indicates the device ...

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Abstract

The invention provides a fuzzy rough DEMATEL-ANP-based error source diagnosis method for high-end precision bearings in a manufacturing process. The error source set of a high-end precision bearing manufacturing process is established, and the error source is divided into several dimensions, wherein each error source dimension contains different error source factors; the difference of individual cognition level of each diagnostic expert in the error source diagnosis of the high-end precision bearing manufacturing process is fully considered , and the importance degree is introduced to deal with the opinions of each diagnostic expert. The trapezoidal fuzzy number is used to express the opinions of diagnostic experts when evaluating the influence of error sources in the manufacturing processof high-end precision bearings. The fuzzy rough DEMATEL-ANP is proposed, which considers the complex relationship between the error sources comprehensively and then solves the weight of the error sources. The method is simple and easy to implement, and the programming is fast.

Description

technical field [0001] The invention relates to the field of bearing manufacturing and processing, in particular to a method for diagnosing error sources in the manufacturing process of high-end precision bearings based on fuzzy rough DEMATEL-ANP. Background technique [0002] Bearing is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. The development of modern technology has made the demand for high-end precision bearings for mechanical equipment increasingly strong. Starting from the manufacturing process of high-end precision bearings, the diagnosis of error sources can provide support and basis for the quality control and improvement of the manufacturing process. [0003] The manufacturing process of high-end precision bearings is a multi-level system combining series and parallel. The manufacturing quality defects i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17
Inventor 李联辉
Owner BEIFANG UNIV OF NATITIES
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