本文選題：裝配精度控制 + 元?jiǎng)幼餮b配單元　； 參考：《機(jī)械工程學(xué)報(bào)》2015年17期

【摘要】：機(jī)械產(chǎn)品裝配誤差源和誤差傳遞規(guī)律分析,是裝配精度預(yù)測(cè)與控制的前提工作。在對(duì)數(shù)控機(jī)床進(jìn)行結(jié)構(gòu)化分解至元?jiǎng)幼鞯幕A(chǔ)上,提出了元?jiǎng)幼餮b配單元的概念。針對(duì)元?jiǎng)幼餮b配單元層面影響裝配質(zhì)量的因素,將裝配過(guò)程的誤差源分為位置誤差、形狀誤差、裝配位置誤差等五類誤差源;建立各類誤差源及其誤差評(píng)價(jià)的統(tǒng)計(jì)模型;分析誤差在零件間、零件內(nèi)兩特征間的傳遞和相互作用,構(gòu)建誤差傳遞鏈圖、誤差傳遞網(wǎng)絡(luò)對(duì)五種誤差源與配合誤差進(jìn)行形象化表達(dá)。綜合誤差傳遞鏈接圖,建立面向整個(gè)產(chǎn)品誤差傳遞及裝配功能表達(dá)的裝配誤差網(wǎng)絡(luò)圖模型,為方便誤差傳遞網(wǎng)絡(luò)圖中各類誤差傳遞模型的計(jì)算與存儲(chǔ),又進(jìn)一步構(gòu)建了面向整個(gè)產(chǎn)品裝配誤差傳遞的鏈接矩陣。以某加工中心連續(xù)分度轉(zhuǎn)臺(tái)蝸桿轉(zhuǎn)動(dòng)元?jiǎng)幼餮b配單元裝配為例,驗(yàn)證誤差源表達(dá)和誤差傳遞模型的有效性。
[Abstract]:The analysis of assembly error source and error transfer law of mechanical products is the premise of assembly precision prediction and control. Based on the structural decomposition to meta-action of NC machine tools, the concept of meta-action assembly unit is proposed. In view of the factors affecting assembly quality at the level of meta-action assembly unit, the error sources of assembly process are divided into five kinds of error sources, such as position error, shape error and assembly position error, and the statistical model of all kinds of error sources and their error evaluation are established. By analyzing the transfer and interaction of errors between parts and between the two features of parts, the error transfer chain diagram is constructed, and the five kinds of error sources and matching errors are visualized by error transfer network. In order to facilitate the calculation and storage of all kinds of error transfer models in error transfer network diagram, an assembly error network model oriented to the expression of the whole product error transfer and assembly function is established by synthesizing the error transfer link diagram. Furthermore, the link matrix for the whole product assembly error transfer is constructed. Taking the assembly unit of worm rotation element for a machining center as an example, the validity of error source representation and error transfer model is verified.
【作者單位】： 邵陽(yáng)學(xué)院機(jī)械與能源工程系;重慶大學(xué)機(jī)械工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(51175527) 國(guó)家科技重大專項(xiàng)(2011ZX04003-031,2012ZX04011-031,2013ZX04012-061)資助項(xiàng)目
【分類號(hào)】：TG95

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本文編號(hào)：2044691