【正文】 I 摘 要 在機械產(chǎn)品的設(shè)計和制造過程中，零部件的裝配是極為重要的一步。傳統(tǒng)的機械設(shè)計是在制造出物理樣機之后再進行反復(fù)的試裝配，這使得裝配成了限制新產(chǎn)品研發(fā)速度的瓶徑。本文基于 Pro/ENGINEER 軟件，研究了裝配的相關(guān)技術(shù)，主要工作如下： （ 1）對裝配仿真的原理做了深入細致的分析，包括裝配模型的建立、裝配序列規(guī)劃、裝配路徑規(guī)劃、裝配過程中的干涉檢查、零件庫的建立與應(yīng)用。 （ 2）提出了在骨架模型中規(guī)劃裝配序列和裝配的路徑，然后在 Pro/Program的 relation 下設(shè)定干涉條件和仿真程度，對裝配模型 進行干涉檢查，實現(xiàn)裝配過程仿真的方法。介紹了裝配建模、路徑規(guī)劃和干涉檢查的思路。 （ 3）將零件族信息建模原理和基于族表的零件信息描述方法用于零件庫的建立，實現(xiàn)了裝配過程中的零部件替換。 （ 4）結(jié)合目前的研究課題“立體停車庫升降用液壓缸的設(shè)計與裝配仿真的實現(xiàn)”，利用自頂向下的設(shè)計方法，首先利用布局模塊完成了液壓缸的概念設(shè)計，建立了液壓缸裝配體的層次模型，完成了液壓缸各個零件實體的詳細設(shè)計。規(guī)劃了裝配序列和裝配路徑，在 Pro/E 的原有功能模塊下通過程序開發(fā)實現(xiàn)了裝配仿真和干涉檢查的過程。 關(guān)鍵詞 ：升降機構(gòu)； 裝配仿真；裝配模型； Pro_ENGINEER 運動仿真 II ABSTRACT During the course of design and manufacture of mechanic product, Assembly is a very important process. Assembly in the traditional machine design is iterative after the physical models are made. It make the assembly process the bottle neck of the develop rate of new products. Based on the software of Pro/ENGINEER, the thesis studies the technology about assembly, the main works as follows: (1) The theories and technologies of assembly simulate are analyzed in this thesis. Include basic theory of assembly model set up, layout of assembly sequence, layout of aseembly path, collision detecting, part library etc. (2) Lodged the method of marking out assembly sequence in assembly skeleton, to implement the simulation of assembly, then set the condition of collision and the degree of simulation, to detect the collision of the assembly model. Introduced the idea of assembly model setting up, path layout and collision detection. (3)Use the theory of part family and family table based information to set up and manage part library, achieve the part replace during the assembly. (4)Integrate with the subject of The Design of The Hydraulic cylinder Used for Tridimensional Carport, use the method of TOPDOWN design ,finish the conceptual design of the cylinder first, then set up the hierarchical model of the cylinder, finish the particular design of every part. Based on the module of Pro/E, use program to implement assembly simulation and collision detection. Use layout module to achieve TOPDOWN design first, then set up assembly model, layout assembly sequence and assembly path. Use program to implement the assembly simulation and collision detection of the hydraulic cylinder. Key words: Lifting mechanism。 Assembly Simulation。 Assembly Model。 Pro_ENGINEER Motion Simulation III 目 錄 第一章 緒 論 .............................................................................................. 1 課題來源 ...................................................................................................... 1 研 究目的和意義 .......................................................................................... 1 國內(nèi)外研究狀況和發(fā)展趨勢 ...................................................................... 1 第二章 各式升降機構(gòu)結(jié)構(gòu)及特點 ..................................................................... 3 剪式升降機構(gòu) .............................................................................................. 3 剪式升降機構(gòu)結(jié)構(gòu)及性能 ................................................................... 4 渦輪絲桿式升降機構(gòu) .................................................................................. 5 渦輪絲桿式升降機構(gòu)結(jié)構(gòu)及性能 ....................................................... 6 齒條升降機構(gòu) .............................................................................................. 6 齒條升降機構(gòu)結(jié)構(gòu)及性能 ................................................................... 9 齒條升降平臺的特點 ........................................................................... 9 第三章 剪叉式升降臺的應(yīng)用及其受力分析 ................................................... 10 剪叉式升降平臺的三種結(jié)構(gòu)形式 ............................................................ 10 雙鉸接剪叉式升降平臺機構(gòu)的位置參數(shù)計算 ....................................... 11 雙鉸接剪叉式升降平臺機構(gòu)的動力參數(shù)計算 ....................................... 13 剪叉式升降平臺機構(gòu)設(shè)計時應(yīng)注意的問題 ........................................... 14 針對性比較小實例： ............................................................................... 14 升降平臺機構(gòu)中兩種液壓缸布置方式的比較 ........................................ 16 問題的提出： ..................................................................