【正文】
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。 ( 4)結(jié)合目前的研究課題“立體停車(chē)庫(kù)升降用液壓缸的設(shè)計(jì)與裝配仿真的實(shí)現(xiàn)”,利用自頂向下的設(shè)計(jì)方法,首先利用布局模塊完成了液壓缸的概念設(shè)計(jì),建立了液壓缸裝配體的層次模型,完成了液壓缸各個(gè)零件實(shí)體的詳細(xì)設(shè)計(jì)。介紹了裝配建模、路徑規(guī)劃和干涉檢查的思路。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(duì)裝配仿真的原理做了深入細(xì)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(guò)程中的干涉檢查、零件庫(kù)的建立與應(yīng)用。 I 摘 要 在機(jī)械產(chǎn)品的設(shè)計(jì)和制造過(guò)程中,零部件的裝配是極為重要的一步。傳統(tǒng)的機(jī)械設(shè)計(jì)是在制造出物理樣機(jī)之后再進(jìn)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。 ( 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(duì)裝配模型 進(jìn)行干涉檢查,實(shí)現(xiàn)裝配過(guò)程仿真的方法。 ( 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(kù)的建立,實(shí)現(xiàn)了裝配過(guò)程中的零部件替換。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(guò)程序開(kāi)發(fā)實(shí)現(xiàn)了裝配仿真和干涉檢查的過(guò)程。 Assembly Simulation。 Pro_ENGINEER Motion Simulation III 目 錄 第一章 緒 論 .............................................................................................. 1 課題來(lái)源 ...................................................................................................... 1 研 究目的和意義 .......................................................................................... 1 國(guó)內(nèi)外研究狀況和發(fā)展趨勢(shì) ...................................................................... 1 第二章 各式升降機(jī)構(gòu)結(jié)構(gòu)及特點(diǎn) ..................................................................... 3 剪式升降機(jī)構(gòu) .............................................................................................. 3 剪式升降機(jī)構(gòu)結(jié)構(gòu)及性能 ................................................................... 4 渦輪絲桿式升降機(jī)構(gòu) .................................................................................. 5 渦輪絲桿式升降機(jī)構(gòu)結(jié)構(gòu)及性能 ....................................................... 6 齒條升降機(jī)構(gòu) .............................................................................................. 6 齒條升降機(jī)構(gòu)結(jié)構(gòu)及性能 ................................................................... 9 齒條升降平臺(tái)的特點(diǎn) ........................................................................... 9 第三章 剪叉式升降臺(tái)的應(yīng)用及其受力分析 ................................................... 10 剪叉式升降平臺(tái)的三種結(jié)構(gòu)形式 ............................................................ 10 雙鉸接剪叉式升降平臺(tái)機(jī)構(gòu)的位置參數(shù)計(jì)算 ....................................... 11 雙鉸接剪叉式升降平臺(tái)機(jī)構(gòu)的動(dòng)力參數(shù)計(jì)算 ....................................... 13 剪叉式升降平臺(tái)機(jī)構(gòu)設(shè)計(jì)時(shí)應(yīng)注意的問(wèn)題 ........................................... 14 針對(duì)性比較小實(shí)例: ............................................................................... 14 升降平臺(tái)機(jī)構(gòu)中兩種液壓缸布置方式的比較 ........................................ 16 問(wèn)題的提出: ..................................................................................... 17 兩種布置方式的分析和比較: ......................................................... 18 實(shí)例計(jì)算 ............................................................................................. 19 第四章 臺(tái)板與叉桿的設(shè)計(jì)計(jì)算 ....................................................................... 24 確定叉桿的結(jié)構(gòu)材料及尺寸 .................................................................... 24 對(duì)支撐叉桿進(jìn)行受力分析 ................................................................. 24 計(jì)算其最大彎矩及軸向力: ............................................................. 25 IV 橫軸的選取 ................................................................................................ 28 第五章 液壓式剪叉升降機(jī)構(gòu)的仿真 ............................................................. 30 制作機(jī)構(gòu)仿真 ............................................................................................ 31 添加伺服電機(jī) ........................................................