【正文】 河南機(jī)電高等專科學(xué)校 摘 要 氣電立焊是由普通熔化 氣體保護(hù)焊和電渣焊發(fā)展而形成的一種熔化極氣體保護(hù)電弧焊方法 ,焊接效率及焊接質(zhì)量均較高 ,主要應(yīng)用 液化天然氣氣瓶 的 焊接，也可應(yīng)用于 相應(yīng)的其它零部件的 焊接。為了提高快速響應(yīng)能力，必須實(shí)現(xiàn)快速 設(shè)計(jì)。 本論文首先介紹了氣電立焊機(jī)，包括它的原理、 特點(diǎn)、工藝特點(diǎn)，并介紹了其設(shè)備和用途，詳細(xì)介紹了 液化天然氣氣瓶的焊接方式 。 其次，我們 首先完成液化天然氣氣瓶焊接專機(jī)各種零部件的 三維建模。另外，為了應(yīng)對(duì)繁多的齒輪傳動(dòng)， 應(yīng)用 PRO/E 參數(shù)化齒輪建模方法，完成了參數(shù)化齒輪建模。綜合運(yùn)用PRO/ENGINEER、 AUTOCAD 等軟件 ，我們完成了軸承三維模型的創(chuàng)建。利用 PRO/E 的零件 建模功能 ，我們完成了大量標(biāo)準(zhǔn)件的三維建模，諸如軸承、螺栓、墊片、螺帽等等。 然后，我們?cè)?PRO/E 中進(jìn)行機(jī)構(gòu)運(yùn)動(dòng)仿真，介紹一些具有代表性的裝配過(guò)程，這些裝配過(guò)程用到了一些實(shí)用的裝配技巧。我們介紹了基本裝配約束，多個(gè)螺栓的重復(fù)性裝配，鏈條的陣列化裝配，裝配件中的改名操作，軸組件的裝配。 最后，我們進(jìn)行了機(jī)構(gòu)運(yùn)動(dòng) 設(shè)計(jì)。把各個(gè)零部件通過(guò)裝配模塊組裝成一個(gè)完整的機(jī)構(gòu)后，在 PRO/E 中直接啟動(dòng)機(jī)構(gòu)運(yùn)動(dòng)分析模塊，定 義機(jī)構(gòu)中的連接，設(shè)置伺服電機(jī)，分析運(yùn)行機(jī)構(gòu)，觀察機(jī)構(gòu)的整體運(yùn)動(dòng)軌跡和各零件之間的相對(duì)運(yùn)動(dòng)，進(jìn)行運(yùn)動(dòng)仿真舉例，最終能將機(jī)構(gòu)運(yùn)動(dòng)錄制成 JPEG 格式的動(dòng)畫。 關(guān)鍵詞： 液化天然氣氣瓶焊接專機(jī) ； 三維建模 ； 設(shè)計(jì) ； 仿真 河南機(jī)電高等專科學(xué)校 Abstract Electrogas welding is a kind of melting by the ordinary gas metal arc welding and electroslag welding development and the formation of polar gas shielded arc welding method, welding efficiency and welding quality is high, thick plate welding of the shell plate is mainly applied to the ship, but also can be applied to the corresponding size of bridge box girder webs and large storage tank side welding of plate. In order to improve the rapid response capability, to achieve rapid virtual design. This paper firstly introduces the electrogas welding machine, including the principle, characteristics, its process characteristics, and introduces the equipment and use, details of the ship body electric automatic vertical welding machine. Secondly, we pleted the threedimensional modeling of wire rod. In addition, in order to deal with various kinds of gear transmission, we specializes in the development of gear parametric modeling method of PRO\/E, the parametric modeling of gear. Comprehensive use of PRO\/ENGINEER software, CAXA software, AUTOCAD software, we pleted the creation of threedimensional model of bearing. With the family table function parts of PRO\/E, we pleted the threedimensional modeling of many standard parts, such as bearings, bolts, gaskets, nut etc.. Then, we performed the mechanism movement simulation in PRO\/E, introduces some representative assembly, the assembly process to use some practical assembly skills. We introduced the basic assembly constraints, repeated assembly of a plurality of bolt, chain array assembly, assembly of renaming operation, shaft assembly. Finally, we carried out the movement of virtual design. The assembled into a plete mechanism of each parts of the assembly module, direct start mechanism motion in PRO\/E analysis module, connect definition mechanism, a servo motor is arranged, analysis of the operation mechanism, the relative movement between the overall trajectory of institutions and all parts of the simulation exercise, for example, can finally mechanism motion records into JPEG format animation. Keywords： electrogas welding。 3D modeling。 virtual design。 simulation 河南機(jī)電高等?？茖W(xué)校 目 錄 摘 要 .............................................................................................................................................. I ABSTRACT ....................................................................................................................................II 目 錄 ........................................................................................................................................... III 1 緒論 ............................................................................................................................................. 1 本課題的研究?jī)?nèi)容和意義 ................................................................................................... 1 國(guó)內(nèi)外的發(fā)展概況 ............................................................................................................... 1 本課題應(yīng)達(dá)到的要求 ........................................................................................................... 3 2 氣電立焊機(jī)介紹 ......................................................................................................................... 4 氣電立焊的原理 ................................................................................................................... 4 氣電立焊的特點(diǎn) ................................................................................................................... 4 氣電立焊工藝特點(diǎn) ............................................................................................................... 5 氣電立焊設(shè)備介紹 ............................................................................................................... 7 3 主要零部件建模 ......................................................................................................................... 9 絲杠的三維建模 ................................................................................................................... 9 參數(shù)化齒輪建模 ................................................................................................................. 11 軸承三維模型的創(chuàng)建 ......................................................................................................... 16 墊片的創(chuàng)建 ......................................................................................................................... 19 4 零部件虛擬裝配 ....................................................................................................................... 22 基本裝配約束介紹 ............................................................................................................. 22 多個(gè)螺栓的重復(fù)性裝配 ..................................................................................................... 22 鏈條的陣列化裝配 ............................................................................................................. 24 裝配件中的改名操作 ......................................................................................................