【摘要】：近年來(lái),現(xiàn)代制造業(yè)不斷升級(jí),而且數(shù)控技術(shù)也逐步發(fā)展完善,目前已經(jīng)幾乎全面普及了三軸聯(lián)動(dòng)數(shù)控加工技術(shù)。但傳統(tǒng)的三軸數(shù)控加工不能解決一些復(fù)雜的零件。本課題研究的橢球面類(lèi)零件,葉輪軸和葉片零件是典型的運(yùn)用多軸聯(lián)動(dòng)的數(shù)控加工技術(shù)。因此,根據(jù)目前的實(shí)際狀況,加工過(guò)程有難度,需要從材料、裝夾、刀具、加工工藝等比較詳細(xì)地進(jìn)行分析。首先,必須對(duì)這些零件進(jìn)行零件圖工藝分析,在此基礎(chǔ)上充分的對(duì)其進(jìn)行工藝結(jié)構(gòu)分析,才可以更加明確具體地確定技術(shù)要求,才能夠選擇更為合適的加工方法,進(jìn)而對(duì)合理的工藝流程進(jìn)行擬定,最終實(shí)施加工,這樣的方式才可以將經(jīng)濟(jì)性、生產(chǎn)率以及質(zhì)量之間的統(tǒng)一性充分體現(xiàn)出來(lái)。其次,根據(jù)NURBS曲線(xiàn)的相關(guān)原理,建立了NURBS曲線(xiàn)插補(bǔ)方式的數(shù)學(xué)模型,進(jìn)而實(shí)現(xiàn)了動(dòng)態(tài)變步長(zhǎng)的自適應(yīng)插補(bǔ)方式,不僅滿(mǎn)足了機(jī)床的誤差需求,而且還對(duì)零件以最大化進(jìn)給速度進(jìn)行插補(bǔ)加工,最終極大地優(yōu)化了插補(bǔ)速度與精度,使得加工效率與質(zhì)量都得到了大幅度提升。最后,按照建立的復(fù)雜零件插補(bǔ)計(jì)算的數(shù)學(xué)模型,采用手工編程和軟件自動(dòng)編程的方式對(duì)算法進(jìn)行驗(yàn)證,從而驗(yàn)證了算法的可行性。對(duì)此類(lèi)零件的加工雖然只是數(shù)控加工中的很小一部分,但能否高效、高質(zhì)量的將橢球面零件加工出來(lái),會(huì)體現(xiàn)出加工技術(shù)的高低�，F(xiàn)特針對(duì)橢球面類(lèi)零件的數(shù)控加工技術(shù)進(jìn)行研究,從而在數(shù)控綜合加工技術(shù)方面有所提高。
[Abstract]:In recent years, the modern manufacturing industry has been continuously upgraded, and the NC technology has been gradually developed and perfected. At present, the three-axis linkage NC machining technology has been almost popularized. But traditional three-axis NC machining can not solve some complicated parts. The ellipsoid parts, blade shaft and blade parts studied in this paper are typical multi-axis NC machining technology. Therefore, according to the actual situation, the machining process is difficult, need to be analyzed in detail from materials, clamping, cutting tools, processing technology and so on. First of all, we must do part drawing process analysis to these parts, on the basis of which we can make a full analysis of the process structure, then we can determine the technical requirements more clearly and concretely, and then we can choose a more suitable processing method. Then the reasonable technological process is drawn up and the final processing is carried out, so that the unity of economy, productivity and quality can be fully reflected. Secondly, according to the related principle of NURBS curve, the mathematical model of NURBS curve interpolation is established, and the adaptive interpolation method of dynamic variable step is realized, which not only meets the error requirement of machine tool, but also meets the need of machine tool error. Finally, the interpolation speed and precision are optimized greatly, and the machining efficiency and quality are greatly improved. Finally, according to the mathematical model of the interpolation calculation of complex parts, the algorithm is verified by manual programming and software automatic programming, which verifies the feasibility of the algorithm. Although the machining of this kind of parts is only a very small part of NC machining, whether the ellipsoid parts can be processed efficiently and high-quality will reflect the level of machining technology. In this paper, the numerical control machining technology of ellipsoid parts is studied, so that the NC integrated machining technology is improved.
【學(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TG659

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本文編號(hào)：2242625