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  本文關(guān)鍵詞：基于SPC對Z機械公司產(chǎn)品質(zhì)量問題的分析研究　出處：《內(nèi)蒙古科技大學》2014年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 統(tǒng)計過程控制 表面粗糙度 多元回歸分析 模糊綜合評價法

【摘要】：隨著全球經(jīng)濟一體化的加速，市場競爭環(huán)境也日益嚴峻起來，許多企業(yè)面臨著國內(nèi)外市場競爭的巨大壓力和威脅，如何在日益激烈的市場競爭環(huán)境中占有一席之位，已成為每個企業(yè)迫切需要思考和解決的問題。為了求得生存，贏得發(fā)展，一些企業(yè)采用降低生產(chǎn)成本從而進一步降低產(chǎn)品價格的方法以獲得競爭優(yōu)勢，即通過價格手段壓倒競爭對手，但通過這種方式往往會引起價格戰(zhàn)，造成兩敗俱傷，容易出現(xiàn)惡性的循環(huán)的局面，，不利于企業(yè)的長期發(fā)展。而另一些企業(yè)采取提高產(chǎn)品質(zhì)量的方法，以達到質(zhì)量領(lǐng)先的優(yōu)勢，在質(zhì)量方面成為國內(nèi)乃至世界同類產(chǎn)品的領(lǐng)先者。這是因為一方面隨著人們物質(zhì)水平的提高，顧客更加關(guān)注的是產(chǎn)品的質(zhì)量及其附加特性，對質(zhì)量的依賴程度遠大于價格；另一方面不斷出現(xiàn)的產(chǎn)品質(zhì)量問題對人們造成的傷害使各國政府對產(chǎn)品質(zhì)量的把控更加嚴格�；谝陨弦兀覈髽I(yè)引用國內(nèi)外先進的質(zhì)量管理體系和質(zhì)量控制工具對產(chǎn)品質(zhì)量嚴格把關(guān)，其目的是將產(chǎn)品不合格品率降到最低。對產(chǎn)品質(zhì)量進行預先控制，其中最重要也是特別行之有效地辦法之一就是統(tǒng)計過程控制技術(shù)，即SPC。 SPC技術(shù)是國內(nèi)外大型企業(yè)普遍采用的質(zhì)量控制工具，應用SPC技術(shù)對生產(chǎn)過程監(jiān)控，一方面可以事先預防廢品的產(chǎn)生，保證產(chǎn)品質(zhì)量；另一方面可以降低生產(chǎn)成本，實現(xiàn)價格和質(zhì)量的雙重競爭優(yōu)勢。 本文的具體研究內(nèi)容分為四部分。第一部分是引言，主要闡述了本文的研究背景、研究目的、研究意義、研究方法以及研究內(nèi)容。第二部分是文獻綜述，通過對國內(nèi)外相關(guān)文獻的研究，本文從控制圖和過程能力兩個方面具體闡述SPC的國內(nèi)外研究現(xiàn)狀，為下文的實證研究做好理論準備。第三部分是實證研究，首先確定本文的研究對象為法蘭產(chǎn)品的粗糙度，分析了影響粗糙度的理論因素，并從人、機、料、法、測、刀具六個方面分析法蘭產(chǎn)品存在的主要問題；其次收集粗糙度數(shù)據(jù)，繪制均值-極差控制圖對生產(chǎn)過程進行監(jiān)控，發(fā)現(xiàn)異常波動，并分析導致異常波動的關(guān)鍵工序點，確定關(guān)鍵工藝參數(shù)范圍是否合理，進一步計算過程能力指數(shù)評價生產(chǎn)過程的加工能力；最后針對異常原因制定改進措施。第四部分是模糊綜合評價，即從經(jīng)濟性、過程控制水平、員工素質(zhì)提高三個方面對SPC在Z公司的實施效果進行綜合評判。
[Abstract]:With the acceleration of global economic integration, the market competition environment is becoming increasingly severe, many enterprises are facing the enormous pressure and threat of market competition at home and abroad. How to occupy a position in the increasingly fierce market competition environment has become an urgent need for each enterprise to think and solve the problem in order to survive and win development. Some enterprises adopt the method of reducing production cost to further reduce the product price to gain the competitive advantage, that is to say, the price means overwhelms the competitor, but through this way often can cause the price war. It is easy to appear vicious cycle situation, which is not conducive to the long-term development of enterprises. Other enterprises take the method of improving product quality to achieve the advantage of leading quality. On the one hand, with the improvement of people's material level, customers pay more attention to the quality of products and their additional characteristics. Reliance on quality is much greater than price; On the other hand, the harm to people caused by the continuous problems of product quality makes the control of product quality more strict by governments. Based on the above elements. Chinese enterprises use advanced quality management system and quality control tools at home and abroad to strictly check the quality of products, the purpose of which is to reduce the rate of nonconforming products to the lowest, and to control the quality of products in advance. One of the most important and effective methods is the statistical process control (SPC) technology. SPC technology is a widely used quality control tool in large enterprises at home and abroad. The application of SPC technology to monitor the production process can, on the one hand, prevent the production of waste products in advance and ensure the quality of products. On the other hand, it can reduce the production cost and realize the double competitive advantage of price and quality. The content of this paper is divided into four parts. The first part is the introduction, mainly describes the research background, research purposes, research significance, research methods and research content. The second part is a literature review. Through the domestic and foreign related literature research, this article from the control chart and the process ability two aspects concrete elaboration SPC domestic and foreign research present situation, makes the theoretical preparation for the following empirical research. The third part is the empirical research. Firstly, the research object of this paper is the roughness of flange products, and the theoretical factors affecting the roughness are analyzed, and the main problems of flange products are analyzed from human, machine, material, method, measuring and cutting tools. Secondly, the roughness data is collected, the mean value range control chart is drawn to monitor the production process, the abnormal fluctuations are found, and the key process points leading to abnormal fluctuations are analyzed to determine whether the range of key process parameters is reasonable. Further calculate the process capability index to evaluate the processing capacity of the production process; The 4th part is fuzzy comprehensive evaluation, that is, comprehensive evaluation of the effect of SPC in Z Company from the aspects of economy, process control level and staff quality improvement.
【學位授予單位】：內(nèi)蒙古科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：F426.4;F273.2

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