基于裝配定位優(yōu)先級的并聯(lián)結(jié)合面誤差建模
發(fā)布時間:2018-08-07 20:05
【摘要】:分析了并聯(lián)結(jié)合面在裝配定位優(yōu)先級意義下裝配誤差的形成機理與計算方法。針對常見的平面結(jié)合面與圓柱結(jié)合面,分析了誤差形成和裝配精度失效的原因,采用小位移旋量(SDT)法描述了誤差變動。針對并聯(lián)結(jié)合面間位姿變動的相互影響,定義了裝配定位優(yōu)先級的概念,并詳細分析了并聯(lián)結(jié)合面裝配定位優(yōu)先級的判定依據(jù)。根據(jù)裝配定位優(yōu)先級確定了并聯(lián)的各結(jié)合面誤差組成及計算方法。列舉了常見的并聯(lián)結(jié)合面形式,并以一組常見并聯(lián)結(jié)合面的裝配誤差分析為例,驗證了該方法的可行性,為裝配體誤差分析、零件精度設(shè)計、裝配成功率計算等提供了借鑒。
[Abstract]:The forming mechanism and calculation method of assembly error in the sense of assembly location priority are analyzed. In this paper, the causes of error formation and failure of assembly accuracy are analyzed, and the error variation is described by small displacement spinor (SDT) method. The concept of assembly location priority is defined in view of the mutual influence of position and pose change between parallel joints, and the decision basis of assembly location priority of parallel joint plane is analyzed in detail. According to the assembly location priority, the error composition and calculation method of parallel connection are determined. The common form of parallel connection surface is listed, and an example of assembly error analysis of common parallel joint surface is given. The feasibility of this method is verified, which provides a reference for assembly error analysis, part precision design, assembly success rate calculation and so on.
【作者單位】: 湖南大學(xué)汽車車身先進設(shè)計制造國家重點實驗室;
【基金】:國家自然科學(xué)基金資助項目(51175161,51305132)
【分類號】:TG95
[Abstract]:The forming mechanism and calculation method of assembly error in the sense of assembly location priority are analyzed. In this paper, the causes of error formation and failure of assembly accuracy are analyzed, and the error variation is described by small displacement spinor (SDT) method. The concept of assembly location priority is defined in view of the mutual influence of position and pose change between parallel joints, and the decision basis of assembly location priority of parallel joint plane is analyzed in detail. According to the assembly location priority, the error composition and calculation method of parallel connection are determined. The common form of parallel connection surface is listed, and an example of assembly error analysis of common parallel joint surface is given. The feasibility of this method is verified, which provides a reference for assembly error analysis, part precision design, assembly success rate calculation and so on.
【作者單位】: 湖南大學(xué)汽車車身先進設(shè)計制造國家重點實驗室;
【基金】:國家自然科學(xué)基金資助項目(51175161,51305132)
【分類號】:TG95
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