本文選題：裝夾方案 + 夾緊力��； 參考：《組合機(jī)床與自動(dòng)化加工技術(shù)》2016年12期

【摘要】：夾具裝夾引起的變形是影響薄壁件加工精度的重要因素。針對(duì)大型薄壁回轉(zhuǎn)體車(chē)削加工過(guò)程中工件易變形的問(wèn)題,應(yīng)用有限元分析軟件,討論了工件裝夾有限元模型中的接觸方式、切削力加載以及材料去除方式等關(guān)鍵問(wèn)題,建立了大型薄壁回轉(zhuǎn)體車(chē)削裝夾有限元模型。運(yùn)用所建立模型,分析了夾緊件數(shù)量、接觸面積以及輔助支撐等因素對(duì)夾緊力和工件變形量的影響規(guī)律。結(jié)果表明,該有限元模型可以有效地預(yù)測(cè)薄壁件的夾緊力大小和工件變形量,并為薄壁件裝夾方案的優(yōu)化提供可靠的數(shù)據(jù)支持。
[Abstract]:The deformation caused by clamping is an important factor that affects the machining accuracy of thin-walled parts.Aiming at the problem of easy deformation of workpiece in turning process of large thin-wall rotary body, the contact mode, cutting force loading and material removal mode in the finite element model of workpiece clamping are discussed by using finite element analysis software.A finite element model for turning and clamping of large thin-wall rotary body is established.The effects of the number of clamping parts, contact area and supporting support on the clamping force and the deformation of the workpiece are analyzed by using the established model.The results show that the finite element model can effectively predict the clamping force and the deformation of the workpiece, and provide reliable data support for the optimization of the clamping scheme of the thin-walled parts.
【作者單位】： 沈陽(yáng)航空航天大學(xué)航空制造工藝數(shù)字化國(guó)防重點(diǎn)學(xué)科試驗(yàn)室;北京航空航天大學(xué)能源與動(dòng)力工程學(xué)院;
【基金】：中航工業(yè)產(chǎn)學(xué)研專(zhuān)項(xiàng)項(xiàng)目(cxy2014SH20)
【分類(lèi)號(hào)】：V261

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