【摘要】：變胞機構是機構學研究的一個新的領域,它的提出給機構學帶來了新鮮空氣。通過約束實現(xiàn)變胞全過程的實用變胞機構,要求對應工作構態(tài)中的變胞運動副提供相應的約束,實現(xiàn)機構在工作過程中構型的轉換、保持和運動時序要求。我們有必要對面向變胞全過程中變胞運動副的阻力之間的關系進行研究,設計實用的變胞機構,本文的主要研究內(nèi)容包括： 首先,介紹約束變胞運動副的約束形式主要包括：幾何約束,阻力約束、組合約束；對約束變胞運動副進行分類,根據(jù)約束形式分為幾何約束變胞運動副、阻力約束變胞運動副和組合約束變胞運動副；設計典型移動和轉動變胞運動副的結構,描繪不同類型變胞運動副的阻力特性。在此基礎上介紹典型的空間變胞副,并且描繪它的阻力特性。 其次,分析約束變胞機構的變胞全過程,用運動循環(huán)圖表示構態(tài)變換中約束變胞運動副的切換過程,分析變胞運動副在構態(tài)變換過程中是如何等效的,建立等效阻力梯度模型和調(diào)控機理,用等效阻力梯度曲線描述構態(tài)變換過程中變胞運動副的等效過程。 最后,分析基于擴展Assur桿組變胞機構的組成原理,提出一種變胞機構分析方法,在構態(tài)保持過程中將擴展Assur桿組等效成Assur桿組,對機構進行動力學和運動學分析。引用Assur桿組的動態(tài)靜力分析,提出一種面向變胞全過程的變胞運動副約束力的分析方法,用vc++6.0調(diào)用基本桿組程序?qū)γ嫦蜃儼^程的變胞運動副進行設計。根據(jù)等效阻力梯度模型和面向變胞全過程的變胞運動副的設計原理,設計物料運送機構,設計約束變胞運動副之間的阻力特性,建立三維模型進行運動學仿真,驗證約束變胞運動副之間等效阻力梯度關系,驗證方法的可行性。
[Abstract]:Metamorphic mechanism is a new field of mechanism research, which brings fresh air to mechanism. The practical metamorphic mechanism in the whole process of metamorphosis is realized by constraints. It is required to provide the corresponding constraints for the metamorphic motion pair in the working structure, and to realize the configuration transformation, retention and motion timing requirements of the mechanism during the working process. It is necessary for us to study the relationship between resistance of metamorphic pairs in the whole process of metamorphosis and to design practical metamorphic mechanism. The main contents of this paper are as follows: first of all, This paper introduces the constraint forms of constrained metamorphic pairs, which include: geometric constraints, resistance constraints, combination constraints, classification of constrained metamorphic pairs, which are divided into geometric constraint pairs of metamorphic motion pairs according to the form of constraints. Drag constrained metamorphic pair and combinatorial constrained pair of metamorphic motion pairs are designed to describe the resistance characteristics of different types of metamorphic pairs. On this basis, the typical space variant pair is introduced, and its resistance characteristics are described. Secondly, the whole process of metamorphosis of constrained metamorphic mechanism is analyzed, and the switching process of constrained pair of metamorphic motion pairs in structural transformation is represented by motion cycle graph, and how the pair of metamorphic motion pairs is equivalent in the process of structural transformation is analyzed. The equivalent resistance gradient model and control mechanism are established. The equivalent resistance gradient curve is used to describe the equivalent process of the metamorphic pair in the process of structural transformation. Finally, based on the analysis of the principle of the metamorphic mechanism of the extended Assur rod group, a metamorphic mechanism analysis method is proposed, in which the extended Assur bar group is equivalent to the Assur bar group in the process of structural state preservation, and the dynamics and kinematics of the mechanism are analyzed. Based on the dynamic static analysis of Assur bar group, a method of analyzing metamorphic motion pair for the whole process of metamorphic cell is put forward. The design of metamorphic motion pair oriented to the whole process of metamorphic cell is carried out by using vc6.0 to transfer the basic bar group program to design the metamorphic motion pair for the whole process of metamorphic cell. According to the equivalent resistance gradient model and the design principle of the metamorphic kinematic pair for the whole process of metamorphic cell, the material transport mechanism is designed, and the resistance characteristics between the variable cell motion pairs are designed, and the kinematics simulation is carried out by establishing a three-dimensional model. The equivalent resistance gradient relationship between constrained metamorphic pairs was verified and the feasibility of the method was verified.
【學位授予單位】：東北大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH112

【參考文獻】

相關期刊論文 前10條

1 金國光,丁希侖,張啟先;變胞機構全構態(tài)動力學模型及其數(shù)值仿真研究[J];航空學報;2004年04期

2 李威,逯經(jīng)遠,劉喜梅,何偉;一種新型變胞快速夾緊裝置[J];機械設計與研究;2005年02期

3 楊誼昌;藍兆輝;;一種具有三種構態(tài)循環(huán)的變胞機構優(yōu)化綜合[J];機械設計與研究;2007年06期

4 吳艷榮;金國光;李東福;;基于ADAMS的變胞機構動力學仿真[J];機械設計與制造;2007年05期

5 唐國潮;金國光;吳艷榮;劉遠;;變胞機構結構設計方法探討[J];機械設計與制造;2009年04期

6 盧伍捚;藍兆輝;;描述變胞機構構態(tài)變化的改進鄰接矩陣[J];機械傳動;2009年06期

7 吳艷榮;金國光;李東福;;變胞機構的構態(tài)分析及其運動學仿真研究[J];機械科學與技術;2006年09期

8 張貞;廖啟征;李端玲;;任意構態(tài)變胞機構的結構綜合[J];機械科學與技術;2006年11期

9 李東福;金國光;吳艷榮;;變胞機構理論與應用研究概述[J];機械科學與技術;2007年02期

10 李端玲,戴建生,張啟先,金國光;基于構態(tài)變換的變胞機構結構綜合[J];機械工程學報;2002年07期

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