Comprehensive machine tool property evaluation method based on entropy weight and membership theory

A technology for comprehensive performance evaluation and membership degree, which is applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., and can solve the problem that the comprehensive performance of machine tools cannot be quantitatively evaluated.

Inactive Publication Date: 2013-09-18
通用技术集团沈阳机床有限责任公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for evaluating the comprehensive performance of machine tools based on the theory of entropy weight and degree of membership...

Method used

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  • Comprehensive machine tool property evaluation method based on entropy weight and membership theory
  • Comprehensive machine tool property evaluation method based on entropy weight and membership theory
  • Comprehensive machine tool property evaluation method based on entropy weight and membership theory

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Embodiment Construction

[0040] Below in conjunction with accompanying drawing and the example of vertical machining center further illustrate the present invention.

[0041] Such as figure 1 Shown: A comprehensive performance evaluation method of machine tools based on entropy weight and membership degree theory, according to the following steps:

[0042] (1) Select and obtain the typical performance of the machine tool as the evaluation index, and establish a standardized evaluation index matrix Y;

[0043] Select the geometric accuracy, static stiffness, vibration characteristics, spindle dynamic balance, spindle dynamic error, spindle thermal error, feed axis servo performance, circular characteristics, noise characteristics, cutting performance, functional reliability, and accuracy retention of the vertical machining center as Comprehensive performance evaluation index of vertical machining center. The specific evaluation indicators include 39 items, which are:

[0044]

[0045] To evaluate...

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Abstract

The invention relates to the field of machine tool property evaluation, and in particular to a comprehensive machine tool property evaluation method based on an entropy weight and a membership theory. On the basis that various property data of a machine tool are tested, the various property data of the machine tool are subjected to dimensionless standardization treatment by using a TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) method; evaluation degrees of property indexes are established according to expert knowledge; a single factor evaluation set of the machine tool properties is determined by using the membership theory; the comprehensive weight is calculated based on the entropy weight and the expert experience; and finally, the comprehensive evaluation result of the machine tool properties is obtained through the single factor evaluation set and the comprehensive weight. The method is used for evaluating comprehensive properties of various machine tools and used for comparing the comprehensive properties of various similar machine tools, a scientific and operable evaluation method and procedures are provided for the comprehensive machine tool property evaluation, and the problem that the machine tool properties cannot be quantitatively evaluated is solved.

Description

technical field [0001] The invention relates to the field of machine tool performance testing and evaluation, in particular to a fuzzy evaluation method for machine tool comprehensive performance based on the objective weight of entropy weight and the subjective weight of expert evaluation. Background technique [0002] The evaluation of the comprehensive performance of machine tools is an important and very difficult problem in the field of machine tool performance testing and evaluation. Due to the diversity of machine tool performance, difficulty in extracting key performance indicators and limitations of evaluation methods, the evaluation of comprehensive performance of machine tools has not been realized. There are some studies evaluating machine tool reliability and cutting performance. In order to solve the problem that the comprehensive performance of machine tools has been unable to be quantitatively evaluated, the comprehensive performance evaluation method of mach...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 刘阔林剑峰马晓波王冠明谭智于福来仝建王海滨
Owner 通用技术集团沈阳机床有限责任公司
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