基于多對稱特征的零件裝配效率預測模型
發(fā)布時間:2018-07-16 18:26
【摘要】:為研究零件對稱結(jié)構(gòu)對裝配效率的影響,分析抓取和定向兩種零件裝配操作過程,逐一考慮零件上的多對稱特征并分類為輪廓型對稱特征和定向型對稱特征。以三種不同裝配要求下,六邊形棱柱零件可能轉(zhuǎn)動的最大角度為例,在總對稱角概念基礎(chǔ)上提出零件總修正角概念。結(jié)合現(xiàn)有試驗數(shù)據(jù),在滿足"零件越對稱,裝配效率越高"和四個基本條件下,建立多對稱特征下的零件"對稱度-裝配時間"預測模型。用五種模型預測四種不同多對稱零件的裝配效率,對比結(jié)果表明:零件"對稱度-裝配時間"預測模型與試驗結(jié)果更接近,具有更好的區(qū)分度與可信性。
[Abstract]:In order to study the effect of the symmetrical structure of parts on the assembly efficiency, this paper analyzes the assembly operation process of two kinds of parts, grasping and orientation, and considers the multi-symmetry features one by one and classifies them into contour symmetric features and directional symmetric features. Taking the maximum angle of hexagonal prism as an example, the concept of total correction angle is proposed on the basis of the concept of total symmetric angle. Based on the existing experimental data, the "symmetry degree-assembly time" prediction model is established under the conditions of "the more symmetrical parts, the higher assembly efficiency" and the four basic conditions. Five kinds of models are used to predict the assembly efficiency of four different kinds of multi-symmetric parts. The comparison results show that the "symmetry degree-assembly time" prediction model is closer to the experimental results, and has better distinction and credibility.
【作者單位】: 浙江大學CAD&CG國家重點實驗室;
【基金】:國家自然科學基金資助項目(51175455)
【分類號】:TG95
本文編號:2127258
[Abstract]:In order to study the effect of the symmetrical structure of parts on the assembly efficiency, this paper analyzes the assembly operation process of two kinds of parts, grasping and orientation, and considers the multi-symmetry features one by one and classifies them into contour symmetric features and directional symmetric features. Taking the maximum angle of hexagonal prism as an example, the concept of total correction angle is proposed on the basis of the concept of total symmetric angle. Based on the existing experimental data, the "symmetry degree-assembly time" prediction model is established under the conditions of "the more symmetrical parts, the higher assembly efficiency" and the four basic conditions. Five kinds of models are used to predict the assembly efficiency of four different kinds of multi-symmetric parts. The comparison results show that the "symmetry degree-assembly time" prediction model is closer to the experimental results, and has better distinction and credibility.
【作者單位】: 浙江大學CAD&CG國家重點實驗室;
【基金】:國家自然科學基金資助項目(51175455)
【分類號】:TG95
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