臺(tái)式數(shù)控龍門(mén)雕刻機(jī)TLNC-X-2030工作臺(tái)及Y軸傳動(dòng)部件設(shè)計(jì)含4張CAD圖
臺(tái)式數(shù)控龍門(mén)雕刻機(jī)TLNC-X-2030工作臺(tái)及Y軸傳動(dòng)部件設(shè)計(jì)含4張CAD圖,臺(tái)式,數(shù)控,龍門(mén),雕刻,TLNC,2030,工作臺(tái),傳動(dòng),部件,設(shè)計(jì),CAD
數(shù)控加工技術(shù)發(fā)展概述
1數(shù)控編程及其發(fā)展
???數(shù)控編程是目前CAD/CAPP/CAM系統(tǒng)中最能明顯發(fā)揮效益的環(huán)節(jié)之一，其在實(shí)現(xiàn)設(shè)計(jì)加工自動(dòng)化、提高加工精度和加工質(zhì)量、縮短產(chǎn)品研制周期等方面發(fā)揮著重要作用。在諸如航空工業(yè)、汽車(chē)工業(yè)等領(lǐng)域有著大量的應(yīng)用。由于生產(chǎn)實(shí)際的強(qiáng)烈需求，國(guó)內(nèi)外都對(duì)數(shù)控編程技術(shù)進(jìn)行了廣泛的研究，并取得了豐碩成果。下面就對(duì)數(shù)控編程及其發(fā)展作一些介紹。
2數(shù)控編程的基本概念
???? 數(shù)控編程是從零件圖紙到獲得數(shù)控加工程序的全過(guò)程。它的主要任務(wù)是計(jì)算加工走刀中的刀位點(diǎn)（cutterlocationpoint簡(jiǎn)稱CL點(diǎn)）。刀位點(diǎn)一般取為刀具軸線與刀具表面的交點(diǎn)，多軸加工中還要給出刀軸矢量。
3數(shù)控編程技術(shù)的發(fā)展概況
? ???為了解決數(shù)控加工中的程序編制問(wèn)題，50年代，MIT設(shè)計(jì)了一種專門(mén)用于機(jī)械零件數(shù)控加工程序編制的語(yǔ)言，稱為APT（AutomaticallyProgrammedTool）。其后，APT幾經(jīng)發(fā)展，形成了諸如APTII、APTIII（立體切削用）、APT（算法改進(jìn)，增加多坐標(biāo)曲面加工編程功能）、APTAC（Advancedcontouring）(增加切削數(shù)據(jù)庫(kù)管理系統(tǒng))和APT/SS（SculpturedSurface）(增加雕塑曲面加工編程功能)等先進(jìn)版。
采用APT語(yǔ)言編制數(shù)控程序具有程序簡(jiǎn)練，走刀控制靈活等優(yōu)點(diǎn)，使數(shù)控加工編程從面向機(jī)床指令的“匯編語(yǔ)言”級(jí)，上升到面向幾何元素.APT仍有許多不便之處：采用語(yǔ)言定義零件幾何形狀，難以描述復(fù)雜的幾何形狀，缺乏幾何直觀性；缺少對(duì)零件形狀、刀具運(yùn)動(dòng)軌跡的直觀圖形顯示和刀具軌跡的驗(yàn)證手段；難以和CAD數(shù)據(jù)庫(kù)和CAPP系統(tǒng)有效連接；不容易作到高度的自動(dòng)化，集成化。
針對(duì)APT語(yǔ)言的缺點(diǎn)，1978年，法國(guó)達(dá)索飛機(jī)公司開(kāi)始開(kāi)發(fā)集三維設(shè)計(jì)、分析、NC加工一體化的系統(tǒng)，稱為為CATIA。隨后很快出現(xiàn)了像EUCLID，UGII，INTERGRAPH，Pro/Engineering，MasterCAM及NPU/GNCP等系統(tǒng)，這些系統(tǒng)都有效的解決了幾何造型、零件幾何形狀的顯示，交互設(shè)計(jì)、修改及刀具軌跡生成，走刀過(guò)程的仿真顯示、驗(yàn)證等問(wèn)題，推動(dòng)了CAD和CAM向一體化方向發(fā)展。到了80年代，在CAD/CAM一體化概念的基礎(chǔ)上，逐步形成了計(jì)算機(jī)集成制造系統(tǒng)（CIMS）及并行工程（CE）的概念。目前，為了適應(yīng)CIMS及CE發(fā)展的需要，數(shù)控編程系統(tǒng)正向集成化和智能化方向發(fā)展。
集成化方面，以開(kāi)發(fā)符合STEPStandardfortheExchangeofProductModelData標(biāo)準(zhǔn)的參數(shù)化特征造型系統(tǒng)為主，目前已進(jìn)行了大量卓有成效的工作，是國(guó)內(nèi)外開(kāi)發(fā)的熱點(diǎn)；在智能化方面，工作剛剛開(kāi)始，還有待我們?nèi)ヅΑ?
英文翻譯
Numerical control process technology development outline
1 numerical control programming and development
The numerical control programming is in the present CAD/CAPP/CAM system most can display one of obviously benefit links, its is realizing design processing automation, enhancement working accuracy and processing quality, aspects and so on reduction product development cycle is playing the influential role. In such as domains and so on aviation industry, automobile industry have the massive applications. Because produces the actual intense demand, domestic and foreign has conducted the extensive research to the numerical control programming technology, and has obtained the rich fruit. Below makes some introductions to the numerical control programming and the development.
2 numerical control programming basic concept
The numerical control programming is to obtains the numerical control processing program from the components blueprint the entire process. Its primary mission is calculates the processing to feed the knife position spot (cutterlocationpoint to be called the CL spot). The knife position spot takes generally for the tool axis and the cutting tool surface point of intersection, in the multiple spindle processing must give the cutter bar vector.
3 numerical control programming technology development survey
In order to solve in the numerical control processing programming problem, in the 50s, MIT designed one kind to use in the machine parts numerical control processing program establishment specially the language, was called APT (AutomaticallyProgrammedTool). After that APT several pass through the development, has formed such as APTII, APTIII (three-dimensional cutting with), APT (algorithm improvement, increases multi-coordinate surface processing programming function), APTAC (Advancedcontouring) (to increase cutting database management system) and APT/SS (SculpturedSurface) (increases sculpture surface processing programming function) and so on advanced version.
Uses the APT language establishment numerical control procedure to have the procedure to be succinct, feeds the control nimbly and so on merits, causes the numerical control processing programming from to face the engine bed instruction “the assembly language” the level, rose to faces geometric element .APT still to have many discomforts: Uses the language definition components geometrical shape, describes the complex geometrical shape with difficulty, lacks geometry intuitive; Lacks to the components shape, the cutting tool path's visual picture demonstration and tool path's confirmation method; With difficulty connects effectively with the CAD database and the CAPP system; It is not easy to do the high automation, the integration.
In view of the APT language's shortcoming, in 1978, the French Dassault Airplane Company started to develop the collection three dimensional design, the analysis, the NC processing integration system, was called is CATIA. Afterward appeared very quickly has looked like systems and so on EUCLID, UGII, INTERGRAPH, Pro/Engineering, MasterCAM and NPU/GNCP, these system effective solution geometric modeling, the components geometrical shape's demonstration, alternately has designed, the revision and the tool path production, fed questions and so on process simulation demonstration, confirmation, impelled CAD and CAM develops to the integrated direction. To the 80s, in the CAD/CAM integration concept's foundation, has formed the computer integration manufacture system gradually (CIMS) and the parallel projects (CE) the concept. At present, to adapt CIMS and the CE need to develop, the numerical control programming system is developing to the integration and the intellectualized direction.
The integrated aspect, develops conforms to the STEPStandardfortheExchangeofProductModelData standard parametrization characteristic modelling system primarily, has carried on the massive fruitful work at present, is the domestic and foreign development hot spot; In the intellectualized aspect, the work just started, but also waits for us going diligently.
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