【正文】 eral Advanced Techniques in Formulation Engineering Procedure of Mechanical Manufacturing〔Abstract〕This paper introduced the basic methods of using GT and CAPP in formulation engineering procedure of mechanicalmanufacturing，put forward Viewpoints: take PDM system’s integrated framework ，bine Auto CAD with CAPP，making the developingplatform of CAPP develop towards uniform.〔Key words〕Group technology GT； CAPP software； PDM technology近年來，隨著計(jì)算機(jī)及網(wǎng)絡(luò)技術(shù)的不斷發(fā)展和應(yīng)用軟件的開發(fā)推廣，越來越多的企業(yè)已經(jīng)使用各種應(yīng)用軟件系統(tǒng)提高產(chǎn)品的設(shè)計(jì)生產(chǎn)水平和工作效率。 Group technology (GT) is to wide a variety of various singlepiece and small batch production of spare parts, and according to its shape structure, technical requirements, processing methods of the similarity of the parts is divided into several groups. Then choose a representative part (which can actually exist, and also some of the hypothetical, but must include all parts of the processing group elements)in the selected parts of each group. According to the representative part of this process to develop a typical order and we select and design a set of machine tools and process equipment. And we unite them with a special construction section or ，由于技術(shù)要求、結(jié)構(gòu)、工藝的相似，可以不改變加工方法和加工設(shè)備，甚至連控制用的凸輪、擋鐵及工夾具都不用更換，或者只需略做調(diào)整，便可加工生產(chǎn)[1，2]。 In a parts group, the first we design a part of this group which can contain all the geometrical features of the virtual part, and require the tribe owns the processing of all the parts needed for processing the surface. Then we press the virtual part to technological design. That is the group technology of group parts. 2) The posite process route method. Firstly在零件族內(nèi)先找出一個(gè)結(jié)構(gòu)最復(fù)雜、工藝路線最長(zhǎng)的零件作為代表，然后將族內(nèi)其他零件中有代表性而沒有工序的也加入進(jìn)去，從而獲得一條滿足全族零件加工要求的復(fù)合工藝路線。 It is the bridge from design to product and an important position in the machinery manufacturing work occupies. 它因時(shí)間、場(chǎng)合、條件等多方面因素的改變而改變。 Process design manual mode of operation neither meets the changing requirements of modern production breeds, nor matches with advanced means of production and management system. 隨著計(jì)算機(jī)應(yīng)用的普及和提高以及成組技術(shù)的發(fā)展，計(jì)算機(jī)輔助工藝設(shè)計(jì)技術(shù)應(yīng)運(yùn)而生，成為現(xiàn)代工藝設(shè)計(jì)和工藝管理的強(qiáng)有力工具。 The world39。S Automated process planning系統(tǒng)。 Currently, although there are different interpretations of law about the acronym CAPP, called the ComputerAided Process Planning as CAPP has bee the accepted interpretation. 隨著機(jī)械制造生產(chǎn)技術(shù)水平的發(fā)展及市場(chǎng)需求，計(jì)算機(jī)輔助工藝設(shè)計(jì)(CAPP)作為連接產(chǎn)品設(shè)計(jì)(CAD)與制造(CAM)的橋梁，以及連接產(chǎn)品設(shè)計(jì)與生產(chǎn)管理 Replacing the CAPP to the traditional process design has bee a necessity and the importance of its machinery manufacturing industry, reflected in the following points: (l) it liberates the people of the original design, and make new products, new processes and new technology development. (2)縮短設(shè)計(jì)周期，保證設(shè)計(jì)質(zhì)量，提高產(chǎn)品的市場(chǎng)競(jìng)爭(zhēng)能力。計(jì)算機(jī)輔助工藝設(shè)計(jì)的目標(biāo)與范圍 2 ComputerAided Process Design Objectives and Scope CAPP在我國(guó)的應(yīng)用現(xiàn)狀 CAPP application status in China 計(jì)算機(jī)輔助工藝設(shè)計(jì)作為連接CAD與CAM的橋梁，也是許多先進(jìn)制造系統(tǒng)的技術(shù)基礎(chǔ)之一。 In the developed CAPP system, some systems have been the practical application, and a few have been mercialized. 但總的來看，CAPP的研究、開發(fā)方向存在嚴(yán)重的偏差。 development of multiinput, application maintenance almost no input。 The reason is mainly manifested in: First of all, goals of CAPP research and development has great onesided that the pursuit of process automation of overgeneration. 實(shí)際上，工藝設(shè)計(jì)是一個(gè)非常復(fù)雜的過程，涉及到大量錯(cuò)綜復(fù)雜的西素，而且工藝方面的很多問題是不確定的，這決定了自動(dòng)化的CAPP還做不到通用化。 Therefore, only productbased CAPP system adapts to the structure of enterprise production environment. 第三，對(duì)CAPP的實(shí)用性、易用性重視不夠，很多CAPP系統(tǒng)采用純粹的字處理方式填寫卡片，或是簡(jiǎn)單的數(shù)據(jù)庫(kù)界面，做不到“所見及所得”，不符合工藝人員的工作習(xí)慣，達(dá)不到提高效率的目的。 business processes spend much of staff time on process the data summary statistics, such as duplication of work pleted. It is not only inefficient, but also difficult to process information and documents to ensure accuracy, consistency. 卡片填寫式的工藝軟件并不能滿足這些非常重要的工藝數(shù)據(jù)管理工作。 (3) CAPP has to provide technical information system and management information systems (MRP) necessary to machine information, which can meet the plant puter systems data sharing, and system integration requirements. 三、CAPP的發(fā)展趨勢(shì) 3. CAPP trends 由于國(guó)內(nèi)企業(yè)工藝編程規(guī)范的多樣性，造成現(xiàn)有CAPP軟件開發(fā)標(biāo)準(zhǔn)的不統(tǒng)一，從而導(dǎo)致了CAPP軟件與CAD/CAM軟件的兼容困難。 PDM system not only manages the product from structural design to process design and the resulting need all the information, but also provides a unified coding standard the structure of the product design to process design