本文選題：高速往復(fù)走絲　切入點(diǎn)：電極絲　出處：《青島理工大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：高速往復(fù)走絲電火花線切割機(jī)床是我國(guó)自主研發(fā)的,在我國(guó)的制造領(lǐng)域具有極其重要的地位,已經(jīng)在模具制造和精密零件加工等領(lǐng)域得到廣泛的應(yīng)用。但由于在加工過(guò)程中電極絲的振動(dòng)問(wèn)題,制約了機(jī)床在加工速度和表面粗糙度上的進(jìn)一步提升,為此電極絲振動(dòng)控制裝置應(yīng)運(yùn)而生。本文首先介紹了高速往復(fù)走絲電火花線切割機(jī)床的研究現(xiàn)狀以及相關(guān)理論,為后續(xù)的研究打好了基礎(chǔ)。同時(shí)設(shè)計(jì)了一種電極絲振動(dòng)控制裝置,由振動(dòng)檢測(cè)部分和張絲部分等組成,它能夠根據(jù)實(shí)際的加工情況自動(dòng)地調(diào)節(jié)電極絲的松緊,減少了人為因素的干擾。利用裝有這種裝置的北京凝華NH系列線切割機(jī)床NH7740B進(jìn)行加工實(shí)驗(yàn),通過(guò)實(shí)驗(yàn)數(shù)據(jù)的對(duì)比,證明了該裝置能夠較大幅度的提升加工速度和降低工件的表面粗糙度。但對(duì)于裝有電極絲振動(dòng)控制的高速往復(fù)走絲電火花線切割機(jī)床而言,原有的加工參數(shù)已經(jīng)不再適合,不能充分的利用該裝置,為了更好地利用和普及這些性能更加優(yōu)良的機(jī)床,需要找到與之相匹配的加工參數(shù),以此來(lái)指導(dǎo)實(shí)際生產(chǎn)。為了能夠找到與之相匹配的加工參數(shù),需要進(jìn)行建模與仿真,為此決定使用BP神經(jīng)網(wǎng)絡(luò)。因?yàn)锽P神經(jīng)網(wǎng)絡(luò)是整個(gè)人工神經(jīng)網(wǎng)絡(luò)的核心,最精華的部分,具有很強(qiáng)的學(xué)習(xí)和適應(yīng)能力,能夠處理非線性關(guān)系的數(shù)據(jù),找出其存在的潛在關(guān)系,此外還具有很強(qiáng)的容錯(cuò)能力。建立加工工藝預(yù)測(cè)模型和加工參數(shù)優(yōu)化模型,通過(guò)BP神經(jīng)網(wǎng)絡(luò)進(jìn)行加工工藝的預(yù)測(cè)以及加工參數(shù)的優(yōu)化。通過(guò)優(yōu)化所得的加工參數(shù)進(jìn)行加工實(shí)驗(yàn),在加工速度和表面粗糙度方面大有提高,證明了模型的準(zhǔn)確性,有利于電極絲振動(dòng)裝置的普及和發(fā)展。
[Abstract]:High speed reciprocating wire WEDM machine tool is independently developed in our country, and has an extremely important position in the field of manufacturing in our country. It has been widely used in die manufacturing and precision parts machining. However, the vibration of electrode wire in machining process restricts the further improvement of machining speed and surface roughness of machine tools. For this reason, the electrode wire vibration control device came into being. Firstly, this paper introduces the research status and related theory of high-speed reciprocating wire WEDM machine tool. At the same time, a vibration control device of electrode wire is designed, which is composed of vibration detection part and tensioning part, which can automatically adjust the tension of electrode wire according to the actual processing conditions. The interference of human factors was reduced. The processing experiment was carried out by using the NH7740B, a series of wire cutting machine tools of Beijing Inferon NH series equipped with this device, and the experimental data were compared with each other. It is proved that the device can greatly increase the machining speed and reduce the surface roughness of the workpiece, but the original machining parameters are no longer suitable for the high speed reciprocating wire WEDM machine which is controlled by the vibration of the electrode wire. Unable to make full use of this device, in order to make better use of and popularize these machine tools with better performance, we need to find corresponding processing parameters to guide actual production. We need to model and simulate, so we decided to use BP neural network, because BP neural network is the core of the whole artificial neural network. In addition, it has strong fault-tolerant ability. The prediction model of machining process and the optimization model of machining parameters are established. The prediction of machining process and the optimization of machining parameters are carried out by BP neural network, and the machining speed and surface roughness are greatly improved by optimizing the processing parameters, which proves the accuracy of the model. It is beneficial to the popularization and development of electrode wire vibration device.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TG484

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李美新;;淺談電火花線切割數(shù)控機(jī)床加工特點(diǎn)及發(fā)展方向[J];裝備制造技術(shù);2015年05期

2 劉志東;;高速往復(fù)走絲電火花線切割技術(shù)發(fā)展趨勢(shì)[J];航空制造技術(shù);2014年19期

3 齊文春;高堅(jiān)強(qiáng);郭麗華;黃鶯;;微孔過(guò)濾技術(shù)在線切割工作液系統(tǒng)中的應(yīng)用[J];電加工與模具;2014年03期

4 胥宏;張世憑;連帥梅;;國(guó)內(nèi)電火花線切割技術(shù)研發(fā)的探討[J];成都工業(yè)學(xué)院學(xué)報(bào);2013年02期

5 王冬梅;黃蓓;;線切割加工中電極絲的選用及斷絲分析[J];科技視界;2013年17期

6 張武琨;;PLC控制與繼電控制電路差異分析[J];中國(guó)新通信;2013年11期

7 劉志東;;高速往復(fù)走絲電火花線切割的現(xiàn)狀及發(fā)展[J];機(jī)械制造與自動(dòng)化;2013年02期

8 張旭東;李謝峰;;對(duì)往復(fù)走絲電火花線切割加工技術(shù)發(fā)展的思考[J];電加工與模具;2012年S1期

9 程明;;往復(fù)走絲電火花線切割機(jī)床電極絲振動(dòng)研究及抑制措施[J];電加工與模具;2012年S1期

10 張慶;;淺談線切割用黃銅絲和涂層電極絲[J];湖南農(nóng)機(jī);2012年03期

相關(guān)碩士學(xué)位論文 前3條

1 王忠偉;往復(fù)走絲電火花線切割機(jī)床電極絲振動(dòng)控制研究[D];青島理工大學(xué);2014年

2 李成彪;激光制備機(jī)夾刀片涂層工藝及裝置研究[D];青島理工大學(xué);2013年

3 劉超;硬質(zhì)合金刀片電火花擺碾加工工藝及裝置研究[D];青島理工大學(xué);2012年

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