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Obsolete machine tool remanufacturing quality evaluation method

A technology for remanufacturing and quality evaluation, applied in the field of evaluation of remanufacturing quality indicators, can solve problems affecting the quality and economy of remanufactured products, and achieve the effects of reducing uncertainty, improving satisfaction, and ensuring safety performance.

Active Publication Date: 2017-02-22
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

[0004] The raw materials for remanufacturing of machine tools are scrap machine tools. Due to the uncertainty and randomness of their sources, materials, operating conditions, and remaining life of parts, once the remanufacturability attributes are not judged accurately, it will affect the remanufacturing of the product. Quality of manufactured products and economics of remanufacturing

Method used

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  • Obsolete machine tool remanufacturing quality evaluation method
  • Obsolete machine tool remanufacturing quality evaluation method
  • Obsolete machine tool remanufacturing quality evaluation method

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Embodiment Construction

[0030] Step 1: Determine the fuzzy comprehensive evaluation index set U for the remanufacturing of waste machine tools:

[0031] When performing evaluation, the index of evaluation includes m first-level evaluation indexes, then the corresponding first-level index set U=(U 1 , U 2 ,...,U m ); then the secondary evaluation index set is U 1 , U 2 ,...,U m , each secondary evaluation index can be uniformly expressed as U i =(u ij ), i=1, 2, ..., m; the value range of j is determined according to the second-level evaluation indicators contained in each first-level evaluation index.

[0032] Step 2: Determine the comment set V:

[0033] The comment set is a collection of various evaluation results that evaluators may make on the remanufacturing of waste machine tools, denoted by V, denoted as V=(V 1 , V 2 ,...,V K ). And give corresponding scores to all the comments in the comment set V, and get the score vector C=(C 1 , C 2 ,...,C K ). The specific level can be desc...

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Abstract

The invention discloses an obsolete machine tool remanufacturing quality evaluation method, and mainly solves the problems that remanufacturing quality evaluation is difficult due to the fact that the quality and the service condition of an obsolete machine tool are uncertain. The remanufacturing quality evaluation indicator system of the obsolete machine tool is comprehensively and systematically constructed from the aspects of technical, economic, environment-friendly and comprehensive performance improvement. The evaluation method based on combination of the order relation and fuzzy comprehensive evaluation is put forward based on the system so that quantitatively and qualitatively combined remanufacturing quality evaluation can be realized, the problems that the existing evolution method is high in subjectivity and complex in computational process and then low in evaluation efficiency and poor in accuracy can be solved, and thus the remanufacturing quality evaluation result of the obsolete machine tool is enabled to be more objective and reasonable and meet the actual situation of remanufacturing engineering.

Description

technical field [0001] The invention relates to an evaluation method of a remanufacturing quality index, in particular to an evaluation method of a remanufacturing quality index under the condition of uncertain evaluation index. [0002] technical background [0003] Scrap machine tools are a typical waste electromechanical product with high recycling value. The remanufacturing of machine tools can achieve a recycling rate of about 80% of equipment and material resources, increase the energy efficiency of machine tools by an average of about 20%, and reduce noise by more than 10%. On-site environmental pollution emissions such as oil mist, oil pollution, and dust have been reduced by more than 90%. The number of machine tools in my country ranks first in the world, reaching more than 8 million units. More than 60% of machine tools have a service life of more than 10 years. The processing performance and informatization level of machine tools are relatively backward. A large n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/00
CPCG06Q10/30Y02W90/00
Inventor 姜兴宇代明明李丽胡东波宋博学张皓垠高超
Owner SHENYANG POLYTECHNIC UNIV
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