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A method for evaluating the comprehensive performance of numerical control machine tools based on the improved pull-apart grade method

A numerical control machine tool and an improved technology, applied in data processing applications, electrical digital data processing, special data processing applications, etc., can solve the problem that the comprehensive performance of the machine tool cannot be quantitatively evaluated.

Active Publication Date: 2019-01-18
DALIAN UNIV OF TECH
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Problems solved by technology

[0006] The purpose of the present invention is to provide a comprehensive performance evaluation method of machine tools based on the improved method of pulling out grades. The evaluation results of this method not only have a high degree of discrimination, but also facilitate vertical or horizontal comparison between major systems and subsystems , solve the problem that the comprehensive performance of the machine tool cannot be quantitatively evaluated, and provide a systematic and scientific basis for the evaluation of the comprehensive performance of the machine tool

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  • A method for evaluating the comprehensive performance of numerical control machine tools based on the improved pull-apart grade method
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  • A method for evaluating the comprehensive performance of numerical control machine tools based on the improved pull-apart grade method

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[0082] In order to make the technical solutions and beneficial effects of the present invention clearer, the present invention will be described in detail below in combination with the static comprehensive evaluation model and with reference to the accompanying drawings. This embodiment is carried out on the premise of the technical solution of the present invention, and provides detailed implementation and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0083] (1) Establish key performance index system of CNC machine tools

[0084] CNC machine tool performance index system such as figure 1 shown. The system can be decomposed into four levels of subsystems, namely the large system: machine tool performance (S); the first level subsystem: precision (S 1 (1) ), efficiency (S 2 (1) ), reliability (S 3 (1) ), energy consumption (S 4 (1) ); second-level subsystem: geometric error (S 1 (2,1) ), t...

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Abstract

The invention relates to a method for evaluating the comprehensive performance of numerical control machine tools based on an improved pull-apart grade method, belonging to the technical field of performance evaluation of the numerical control machine tool. The linear proportional method is used to standardize the performance data of machine tools. The subjective weights of each index are determined by order relation analysis, and the objective weights of each index are determined by entropy weight method and mean square deviation method. The subjective and objective weights are synthesized based on the principle of vector Pearson correlation coefficient. The final weight coefficients of the indexes are determined by the positive definite matrix corresponding to the weighted index matrices, and the comprehensive evaluation values of the third-level indexes are obtained based on the linear weighted evaluation function. Finally, a similar method is used to calculate the comprehensive evaluation value of the large-scale system layer by layer. The invention is used for comprehensive performance evaluation of various numerical control machine tools and lateral comparison of specific performance of different machine tools, and provides a scientific and operable evaluation method and flow for comprehensive performance evaluation of machine tools.

Description

technical field [0001] The invention belongs to the technical field of performance evaluation of numerical control machine tools, and specifically relates to a method for comprehensive evaluation of performance of numerical control machine tools based on an improved grade-opening method and comprehensive integration weighting. Background technique [0002] As the basic equipment of mechanical manufacturing, CNC machine tools are affected by many factors in processing performance, and finally reflected in the pros and cons of product quality. Therefore, in order to obtain products with good comprehensive performance, it is necessary to improve the processing performance of the machine tool. Performance evaluation is a key part of it. Before processing a batch of parts, conduct a comprehensive and comprehensive evaluation of the CNC machine tool to grasp the current operating status of the CNC machine tool, so as to ensure that the CNC machine tool can work in a state of excel...

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Application Information

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IPC IPC(8): G06F17/50G06Q10/06
CPCG06Q10/0639G06F30/20
Inventor 刘阔刘海波李特褚恒王永青贾振元
Owner DALIAN UNIV OF TECH
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