本文選題：重型數(shù)控機(jī)床 + 主傳動(dòng)系統(tǒng)��； 參考：《電子科技大學(xué)》2015年碩士論文

【摘要】：可靠性分析技術(shù)作為重型數(shù)控機(jī)床可靠性工作的重要組成部分,是識(shí)別機(jī)床關(guān)鍵項(xiàng)目和薄弱環(huán)節(jié)以及對(duì)系統(tǒng)進(jìn)行可靠性評(píng)估與改進(jìn)設(shè)計(jì)的關(guān)鍵基礎(chǔ)技術(shù)。重型數(shù)控機(jī)床在實(shí)現(xiàn)復(fù)合加工的過程中,受到自身熱源、加工環(huán)境、操作技術(shù)人員等因素的影響,從而導(dǎo)致其加工可靠性低。如何降低這些因素的影響并提高系統(tǒng)可靠性,已成為可靠性研究工作亟待解決的重點(diǎn)與難點(diǎn)。本論文以國家科技重大專項(xiàng)“高檔數(shù)控機(jī)床與基礎(chǔ)制造裝備”為依托,以國產(chǎn)重型數(shù)控機(jī)床為研究對(duì)象,針對(duì)重型數(shù)控機(jī)床全壽命周期中早期使用階段的工程特性,提出重型數(shù)控機(jī)床可靠性分析工作的研究框架,為重型數(shù)控機(jī)床可靠性工作的開展提供技術(shù)支撐和理論參考。本論文的主要研究工作包括一下幾個(gè)方面:(1)提出了開展重型數(shù)控機(jī)床主傳動(dòng)系統(tǒng)可靠性工作的建議方法,以幫助與協(xié)調(diào)生產(chǎn)廠家與使用廠家的各部門之間順利的開展可靠性工作,并使各企業(yè)及各部門明確各自的可靠性工作職責(zé)與任務(wù)。(2)開展重型數(shù)控機(jī)床主傳動(dòng)系統(tǒng)故障模式、影響及危害性分析(FMECA)研究,根據(jù)GJB1391-2006(《故障模式、影響及危害性指南》)的規(guī)范生成《某型號(hào)落地銑鏜床主傳動(dòng)系統(tǒng)FMECA報(bào)告》,為后續(xù)可靠性工作的順利開展奠定基礎(chǔ)。(3)在FMECA的基礎(chǔ)上,考慮修復(fù)故障所需的成本,開展基于模糊層次分析法的PC-FMECA研究,并建立相應(yīng)的數(shù)學(xué)模型,為企業(yè)對(duì)是否修復(fù)故障或設(shè)計(jì)改進(jìn)工作這一決策問題提供理論依據(jù)。(4)從質(zhì)量管理的角度開展重型數(shù)控機(jī)床FMEA研究,并結(jié)合5M1E提出了MFMEA方法,由此區(qū)分了機(jī)床生產(chǎn)廠家和使用廠家的故障責(zé)任。應(yīng)用SOP方法為機(jī)床使用廠家的生產(chǎn)管理指明方向,并保證了機(jī)床的使用可靠性。通過上述一系列工作的開展,規(guī)范了可靠性分析工作流程,明確了各企業(yè)的可靠性工作職責(zé),提高了可靠性工作效率。對(duì)提高重型數(shù)控機(jī)床的可靠性水平具有積極意義,為后續(xù)重型數(shù)控機(jī)床各型號(hào)的研制與改進(jìn)提供了參考。
[Abstract]:As an important part of the reliability work of heavy-duty CNC machine tools, reliability analysis technology is the key basic technology to identify key items and weak links of machine tools and to evaluate and improve the reliability of the system. In the process of realizing compound machining, heavy NC machine tools are affected by their own heat source, machining environment, operation technicians and so on, which lead to low reliability of machining. How to reduce the influence of these factors and improve the reliability of the system has become the focus and difficulty of reliability research. Based on the national scientific and technological project "High-grade CNC machine tools and basic manufacturing equipment", and taking the domestic heavy-duty CNC machine tools as the research object, this paper aims at the engineering characteristics of the early stage of the heavy NC machine tool's whole life cycle. The research framework of reliability analysis of heavy-duty CNC machine tools is put forward, which provides technical support and theoretical reference for the development of reliability work of heavy-duty CNC machine tools. The main research work of this paper includes the following several aspects: (1) put forward the suggested method to carry out the reliability work of the main transmission system of the heavy duty CNC machine tool. In order to help and coordinate the departments of manufacturer and user to carry out the reliability work smoothly, and to make each enterprise and each department clear their responsibility and task of reliability work, the failure mode of main transmission system of heavy NC machine tool can be carried out. According to the criterion of GJB1391-2006( "failure Mode, influence and harmfulness Guide"), the FMECA report of the main transmission system of a certain type of ground milling and boring machine is generated, which lays a foundation for the smooth development of the subsequent reliability work on the basis of FMECA. Considering the cost of repairing faults, the PC-FMECA research based on fuzzy analytic hierarchy process (AHP) is carried out, and the corresponding mathematical model is established. This paper provides a theoretical basis for the decision of whether to repair the fault or improve the design of the enterprise. (4) from the point of view of quality management, the research on FMEA of heavy-duty NC machine tools is carried out, and the MFMEA method is put forward in combination with 5M1E. This distinguishes the machine tool manufacturer and the use manufacturer's malfunction responsibility. The method of SOP is used to point out the direction of production management of machine tools and ensure the reliability of machine tools. Through the development of the above series of work, the work flow of reliability analysis is standardized, the responsibility of reliability work of each enterprise is clarified, and the efficiency of reliability work is improved. It is of great significance to improve the reliability level of heavy duty CNC machine tools and provide a reference for the development and improvement of various models of heavy duty NC machine tools.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TG659

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本文編號(hào)：1828923