【摘要】：工時(shí)定額是企業(yè)信息化管理的一項(xiàng)基礎(chǔ)性工作,是企業(yè)進(jìn)行科學(xué)化、標(biāo)準(zhǔn)化管理的必要手段,是現(xiàn)代企業(yè)管理制度的重要組成部分,工時(shí)定額的制定關(guān)系到生產(chǎn)過程中的成本核算、制造周期及制造工人的經(jīng)濟(jì)效益等。本文對(duì)南京某企業(yè)的電子零件工時(shí)定額現(xiàn)狀進(jìn)行了研究,發(fā)現(xiàn)主要存在兩個(gè)問題:企業(yè)長(zhǎng)期采用經(jīng)驗(yàn)估工法進(jìn)行工時(shí)定額,定額結(jié)果存在較大偏差;電子零件結(jié)構(gòu)復(fù)雜,工時(shí)定額難度較大。對(duì)此,本文開展了計(jì)算機(jī)輔助工時(shí)定額技術(shù)的研究,設(shè)計(jì)開發(fā)了電子零件計(jì)算機(jī)輔助工時(shí)定額計(jì)算系統(tǒng),提高了工時(shí)定額的準(zhǔn)確性和效率。本文的主要工作如下:(1)將基于實(shí)例推理技術(shù)應(yīng)用于電子零件完整工藝流程工時(shí)定額。建立零件工時(shí)定額信息模型,給出了零件工時(shí)實(shí)例的表達(dá)方法;研究了基于Creo的零件特征提取技術(shù)以及相似零件的檢索算法,確定了實(shí)例評(píng)價(jià)方式;針對(duì)工藝流程中的數(shù)控加工工序給出了實(shí)例的重用策略;研究了實(shí)例的修改保存技術(shù)。最后以殼體零件為例驗(yàn)證了算法的可行性。(2)研究了印制板零件的工時(shí)定額技術(shù),分析了其工藝和工序工時(shí)的影響因素,通過實(shí)測(cè)法,MATLAB公式擬合等方法建立了關(guān)鍵工序的工時(shí)定額計(jì)算模型。(3)提出了系統(tǒng)的需求和總體目標(biāo),建立了系統(tǒng)的體系結(jié)構(gòu),劃分了系統(tǒng)功能模塊和業(yè)務(wù)角色,確定了業(yè)務(wù)流程,設(shè)計(jì)了系統(tǒng)數(shù)據(jù)庫(kù)。(4)開發(fā)了電子零件計(jì)算機(jī)輔助工時(shí)定額計(jì)算系統(tǒng),劃分為基于Web和基于Creo的兩個(gè)子系統(tǒng),分別實(shí)現(xiàn)輔助工時(shí)定額計(jì)算功能和零件相似檢索功能。
[Abstract]:Man-hour quota is a basic work of enterprise information management, a necessary means for enterprises to carry out scientific and standardized management, and an important part of modern enterprise management system. The formulation of man-hour quota is related to cost accounting in the production process, manufacturing cycle and economic benefits of manufacturing workers. In this paper, the present situation of man-hour quota of electronic parts in a Nanjing enterprise is studied, and it is found that there are two main problems: the empirical estimation method is used to carry out the man-hour quota for a long time, and there is a big deviation in the quota result, and the structure of electronic parts is complex and the man-hour quota is difficult. In this paper, the computer aided man-hour quota technology is studied, and the computer-aided man-hour quota calculation system for electronic parts is designed and developed, which improves the accuracy and efficiency of the man-hour quota. The main work of this paper is as follows: (1) the case-based reasoning technology is applied to the man-hour quota of electronic parts complete process. The information model of part man-hour quota is established, and the expression method of part man-hour example is given; the part feature extraction technology based on Creo and the retrieval algorithm of similar parts are studied, and the evaluation method of the example is determined; the reuse strategy of the example is given for the NC machining process in the technological process; and the modification and preservation technology of the example is studied. Finally, the feasibility of the algorithm is verified by taking shell parts as an example. (2) the man-hour quota technology of printed circuit board parts is studied, the influencing factors of process and working hours are analyzed, and the calculation model of man-hour quota of key processes is established by means of measurement method and MATLAB formula fitting. (3) the requirements and overall objectives of the system are put forward, the architecture of the system is established, and the functional modules and business roles of the system are divided. The business process is determined and the system database is designed. (4) the computer aided man-hour quota calculation system for electronic parts is developed, which is divided into two subsystems based on Web and Creo, and the auxiliary man-hour quota calculation function and part similarity retrieval function are realized respectively.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TP311.52;F273

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