【文章內容簡介】
2D工程圖紙,由于工程圖紙和3D零件動態(tài)連接,因此當用戶修改生成視圖的3D模型時,零件視圖、尺寸和注釋等都自動更新,節(jié)約了圖紙管理和維護的時間。2. 演示市場銷售Pro/E的渲染工具可幫助用戶以真實的照片有效地交流其設計。用戶完成高質量的零件、裝配圖、裝配爆炸效果圖,可用于演示、設計檢查、市場銷售、制作說明書等用途。最直觀的 Pro/E 拋棄傳統(tǒng) CAD/CAM 軟件中的線框和表面模型,而直接于 3D 實體。這使我們的設計環(huán)境完全從 2D 或 2D 與 3D 混合狀態(tài)上升為純3D 模式。產品或模具的描述信息變得更加完整,概念更加清晰,更易于抓住設計意圖。設計質量和速度也大大提高,尤其是結合快速原型技術,可以大大縮短產品設計生產上市周期??傊?,隨著 Pro/E 的不斷完善和發(fā)展,越來越多的問題將被解決,越來越多的理想將變?yōu)楝F(xiàn)實。 Pro/E 的魅力將更多地體現(xiàn)為生產力水平的極大提高。 5. 支重輪主要由值軸、輪體、軸套、浮動油封座、螺塞、墊圈、浮動油封、環(huán)形圈、銷等組成。首先對各個零件進行建模,圖51為支重輪輪體的PRO/E三維模型,圖52為支重輪浮動油封座的PRO/E三維模型,53為支重輪軸的PRO/E三維模型。 圖51支重輪體圖52支重輪浮動油封座 圖53支重輪軸完成零件建模后,進行支重輪裝配,如圖54:圖54支重輪導向輪主要由導向輪軸、O形密封圈、導向輪堵板、圓柱銷、導向輪輪體、鐵套、雙金屬軸套。首先對導向輪各個零件進行建模,圖55為引導輪輪體的PRO/E三維模型,圖56為引導輪軸的PRO/E三維模型。 圖55為引導輪輪體圖56引導輪軸完成零件建模后,進行引導輪裝配,得圖57 圖57引導輪 本章簡單介紹了支重輪與引導輪的三維Pro/E視圖、以及Pro/E簡介,著重于進一步對支重輪與引導輪結構形式的表達,使讀者更能清楚地了解其結構,從而對支重輪、引導輪的深入研究以及對其結構的優(yōu)化設計做了有利的前提條件,為以后打下了良好基礎。第六章 結論 本文對旋挖鉆機的現(xiàn)狀及發(fā)展趨勢作了充分分析,了解了支重輪、引導輪的結構形式及組成,并對其做了結構尺寸設計及履帶行走裝置行走受力分析和詳細計算。本設計是以三一SR150旋挖鉆機為參考進行設計,現(xiàn)將主要工作和進展總結如下:(1)本文分析了支重輪、引導輪的結構形式及其分類、特點和工作原理,并對履帶行走裝置的牽引力進行了詳細的分析和計算,符合實際能應用于實際當中。(2)第四章詳細介紹了支重輪、引導輪的結構設計,并參照國標且確定了各輪的結構尺寸、組成部分及各種參數(shù)及技術要求。(3)最后對支重輪、引導輪進行三維建模進一步了解其結構形式,并簡單介紹的Pro/E。通過這次畢業(yè)設計不僅使我掌握了對各類軟件的使用,而且還很好的對以前所學的各類知識做了系統(tǒng)的復習與加深,并對工程設計的流程有了一定的了解。通過對支重輪、引導輪的設計與計算,讓我了解了履帶行走裝置的行駛原理,并對整機的結構及工作情況有了初步的認識。同時在結束之際我很感謝指導老師周友行以及研究生助教姚小海對我的指導與幫助,讓我在這次畢業(yè)設計中學到了許多從來沒有學到的東西,另外還有其他同組同學的協(xié)助與幫忙。參考文獻[1][M]. 北京:國防工業(yè)出版社. [2][M]. 北京:化學工業(yè)出版社. [3][M]. 北京:[4]濮良貴,(第七版)[M].北京:西北工業(yè)大學機械原理及機械零件教研室,高等教育出版社,2000.[5][M]. 北京:高等教育出版,2002.[6](第三版)[M].北京:清華大學出版社,2001[7][M].北京:高等教育出版社,.[8]張鳳山,[M].北京:人民郵電出版社,2007.[9][M]北京:中國建筑工業(yè)出版社,1986.[10]GB/,:中國標準出版社. [11]GB/T91401996,液壓挖掘機結構與性能. 北京:中國標準出版社. [12]JB/T591999,液壓挖掘機支重輪. 北京:[13]JB/T26022001,:機械科學研究院. [14]JB/,履帶式推土機總成. 北京:[15]孫恒,(第六版)[M].北京:高等教育出版社,2001.[16][J].工程機械,1987Rapid Prototyping and manufacturingIntroduction The term “rapid prototyping” (RP) is a relatively new expression for the generation of threedimensional models manufactured without the need for machining or products designed on a puter aided design system, the first rapid prototyping system was introduced on to the US market in 1988 and gave the engineer the opportunity to produce 3 dimensional objects directly from Computer Aided Design (CAD) date and succeed in the costeffective production of patterns and moulds with plex surfaces.The principle advantages of using this technology are:n High speed at which the solid model is generated.n The plexity of the model does not form any limitation to its production.n The early use of these models was to assist the designer in determining fitness and form. It also provided the sales team with a 3 dimensional object to show to a prospective customer, this being far better than the traditional orthographic drawing which many people find difficult to interpret.n The benefits of RP:n Converts 3D CAD images into accurate physical models at a fraction of the cost of traditional methods.n Improves design munication and helps eliminate design mistakes.n Reduces “time to market” for a new product.n Can be used as a powerful marketing tool since the prototype can be seen rather than the drawing.The development of this technology has reached into many of the traditional fields, attracting the interest of artisans whose skill any knowledge has led to 3D objects being used directly and indirectly as patterns and model for soft tooling. Production of models by machining has a number of limitations.l Material removed during forming is difficult to reclaim. l Machining in the form of drilling turning milling spark erosion etc., is limited by the shapes it can produce.l In the event of design change, conventional tooling such as patterns ,core boxes, dies, jigs etc. ,bee expensive to alter ,and in many cases, may require plete remanufacture.Rapid prototyping differs with conventional manufacturing methods by adding material layer by layer until the desired sharp is achieved, immediately reducing or avoiding the loss of material.What RPamp。M CAN DO?To substantially shorten the time for developing patterns, moulds, and prototypes, some manufacturing enterprises have started to use rapid prototyping methods for plex patterns making and ponent prototyping. Over the past few years, a variety of new rapid manufacturing technologies, generally called Rapid Prototyping and Manufacturing(RPamp。M),have emerged 。the technologies developed include Stereo lithography (SL), selected laser sintering(SLS),fused deposition modeling(FDM),laminated object manufacturing(LOM),and three dimensional printing (3D Print).They have a mon important feature 。the prototype part is produced by adding materials rather than removing materials. This simplifies the 3D part producing processes to 2D layer adding processes so that a part can be produced directly from its puter model. THE BASIC PROCESS IN RPRP machines process