本文選題：電火花線切割 + 電參數(shù)��； 參考：《太原理工大學(xué)》2015年碩士論文

【摘要】：高速走絲電火花線切割在當(dāng)代機(jī)械加工制造行業(yè)中的應(yīng)用越來(lái)越廣泛，特別是在機(jī)械電子、兵器制造、航天工業(yè)以及儀器儀表等行業(yè)發(fā)揮著不可替代的作用。我國(guó)作為首先研發(fā)并制造出高速走絲電火花線切割機(jī)床的國(guó)家，已經(jīng)在機(jī)床構(gòu)造、技術(shù)水平以及工藝參數(shù)等方面具有進(jìn)行了研究并取得了一定的發(fā)展。 人們對(duì)產(chǎn)品的制造精度，表面質(zhì)量不斷提出更嚴(yán)格的要求，因此對(duì)相關(guān)領(lǐng)域模具的制造精度，高硬度，高耐磨性和高耐腐蝕性要求也不斷提高。硬質(zhì)合金因其良好的物理機(jī)械性能和化學(xué)穩(wěn)定性的特性在模具制造行業(yè)的應(yīng)用日益廣泛，但是，由于其高硬度，韌性差的特性，一般的機(jī)械加工基本不可行，因此電火花線切割是加工硬質(zhì)合金模具的首選方法。研究硬質(zhì)合金電火花線切割的加工電參數(shù)，對(duì)提高硬質(zhì)合金的加工效率和加工質(zhì)量具有重要的現(xiàn)實(shí)意義。 本文綜合分析了影響高速走絲電火花線切割硬質(zhì)合金YG6加工質(zhì)量的因素。通過(guò)多種試驗(yàn)方法分析得到電參數(shù)與加工效率以及加工質(zhì)量之間的關(guān)系。根據(jù)電火花線切割的加工原理以及通過(guò)試驗(yàn)數(shù)據(jù)的詳細(xì)分析，得出加工硬質(zhì)合金時(shí)，高效率、高精度的最優(yōu)電參數(shù)組合。 本文首先采用單因素實(shí)驗(yàn)法，選取各個(gè)電參數(shù)適當(dāng)?shù)姆秶�，進(jìn)行試驗(yàn)并記錄試驗(yàn)數(shù)據(jù)。根據(jù)試驗(yàn)數(shù)據(jù)繪制相應(yīng)的曲線圖表，然后得出各個(gè)電參數(shù)對(duì)加工速度以及表面粗糙度的影響規(guī)律。 其次根據(jù)單因素試驗(yàn)的試驗(yàn)結(jié)果，選定各個(gè)電參數(shù)適當(dāng)?shù)姆秶�，進(jìn)行正交試驗(yàn)，記錄試驗(yàn)數(shù)據(jù)并運(yùn)用極差分析對(duì)試驗(yàn)數(shù)據(jù)進(jìn)行分析，得到各個(gè)電參數(shù)對(duì)加工速度以及表面粗糙度的影響大小的順序，計(jì)算分析得出最優(yōu)電參數(shù)組合，根據(jù)各個(gè)電參數(shù)對(duì)加工速度與表面粗糙度影響的趨勢(shì)，推測(cè)出一組新的電參數(shù)組合，分別驗(yàn)證兩組試驗(yàn)的加工速度與表面粗糙度，通過(guò)對(duì)記錄與測(cè)量得到的試驗(yàn)數(shù)據(jù)進(jìn)行比較得出較好的試驗(yàn)電參數(shù)組合，即表面粗糙度達(dá)到最小值時(shí)，最優(yōu)電參數(shù)組合，以及加工速度達(dá)到最快時(shí)的最優(yōu)電參數(shù)組合。 最后為了更好地了解各個(gè)電參數(shù)在加工硬質(zhì)合金YG6的過(guò)程中對(duì)加工速度以及表面粗糙度的具體影響比重，對(duì)正交試驗(yàn)結(jié)果進(jìn)行了方差分析，得到各個(gè)電參數(shù)對(duì)提高加工速度以及降低表面粗糙度值的貢獻(xiàn)率，即影響率，實(shí)現(xiàn)了各個(gè)電參數(shù)對(duì)試驗(yàn)指標(biāo)的量化分析。根據(jù)試驗(yàn)要求，以及各個(gè)電參數(shù)貢獻(xiàn)率的具體情況，設(shè)定不同的電參數(shù)組合，從而可達(dá)到較快的工件加工速度，或者較高加工精度要求。 本文通過(guò)大量的試驗(yàn)，不僅通過(guò)單因素試驗(yàn)得到各個(gè)電參數(shù)對(duì)加工速度以及表面粗糙度的影響規(guī)律，而且根據(jù)試驗(yàn)情況設(shè)計(jì)正交試驗(yàn)，，并通過(guò)大量正交試驗(yàn)的數(shù)據(jù)分析，得到各個(gè)電參數(shù)對(duì)試試驗(yàn)試驗(yàn)驗(yàn)指標(biāo)的影響大小順序。為以后硬質(zhì)合金YG6材料線切割加工提供了更好的依據(jù)。
[Abstract]:High speed wire WEDM (WEDM) has been widely used in modern machining industry, especially in the fields of mechanical electronics, weapon manufacturing, spaceflight industry and instrumentation and so on. As the first country to develop and manufacture high speed WEDM machine tools, our country has studied the machine tool structure, technical level and technological parameters, and has made some progress. The surface quality is more stringent, so the manufacturing precision, high hardness, high wear resistance and high corrosion resistance of the die in related fields are also improved. Cemented carbide is widely used in die manufacturing industry because of its good physical and mechanical properties and chemical stability. However, because of its high hardness and poor toughness, general machining is not feasible. Therefore, WEDM is the preferred method for machining cemented carbide dies. Study on Electrical parameters of WEDM for cemented Carbide, It is of great practical significance to improve the machining efficiency and quality of cemented carbides. In this paper, the factors affecting the machining quality of YG6 cemented carbides with high speed wire WEDM are comprehensively analyzed. The relationship between electrical parameters, machining efficiency and machining quality is obtained through various test methods. According to the principle of WEDM and the detailed analysis of test data, the optimal electrical parameters combination of high efficiency and high precision are obtained in the machining of cemented carbides. Select the appropriate range of electrical parameters, test and record the test data. According to the test data, the corresponding curve diagram is drawn, and then the influence of each electrical parameter on machining speed and surface roughness is obtained. Secondly, according to the test results of single factor test, the proper range of each electrical parameter is selected. The orthogonal test was carried out, the test data were recorded and the test data were analyzed by the range analysis. The order of the influence of each electric parameter on the machining speed and the surface roughness was obtained, and the optimum electric parameter combination was obtained by calculation and analysis. According to the trend of the influence of electrical parameters on machining speed and surface roughness, a new set of electrical parameters is deduced to verify the machining speed and surface roughness of the two groups of experiments, respectively. Through the comparison of the test data recorded and measured, a better combination of experimental electrical parameters is obtained, that is, when the surface roughness reaches the minimum value, the optimal combination of electrical parameters is obtained. Finally, in order to better understand the specific effects of each electrical parameter on the machining speed and surface roughness in the process of machining cemented carbide YG6, The variance analysis of the results of orthogonal test shows that the contribution rate of each electric parameter to increase the machining speed and reduce the value of surface roughness, that is, the influence rate, has been realized, and the quantitative analysis of each electrical parameter to the test index has been realized. According to the test requirements and the specific conditions of the contribution rate of each electric parameter, different electric parameter combinations can be set to achieve faster workpiece processing speed or higher machining precision requirement. In this paper, a large number of experiments have been carried out. Not only the influence of electrical parameters on machining speed and surface roughness is obtained by single factor test, but also the orthogonal test is designed according to the experimental conditions, and the data of a large number of orthogonal tests are analyzed. The order of the influence of each electric parameter on the test index is obtained. It provides a better basis for wire cutting of cemented carbide YG 6 material.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TG484

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本文編號(hào)：2007684