freepeople性欧美熟妇, 色戒完整版无删减158分钟hd, 无码精品国产vα在线观看DVD, 丰满少妇伦精品无码专区在线观看,艾栗栗与纹身男宾馆3p50分钟,国产AV片在线观看,黑人与美女高潮,18岁女RAPPERDISSSUBS,国产手机在机看影片

正文內(nèi)容

機(jī)械外文翻譯--編制機(jī)械制造工藝規(guī)程中幾種先進(jìn)技術(shù)的綜合應(yīng)用-全文預(yù)覽

  

【正文】 及企業(yè)內(nèi)部的技術(shù)管理水平等因素有著密不可分的聯(lián) 系。長(zhǎng)期以來(lái),工作手法都采用傳統(tǒng)的手工編制方式。 CAPP的開(kāi)發(fā)、研制是從上個(gè)世紀(jì)六十年代末開(kāi)始的,在制造自動(dòng)化領(lǐng)域, CAPP的發(fā)展相對(duì) CAD和 CAM而言是最遲的部分。目前對(duì) CAPP這個(gè)縮寫(xiě)法雖然 還有不同的解釋,但把 CAPP稱為計(jì)算機(jī)輔助工藝設(shè)計(jì)已經(jīng)成為公認(rèn)的釋義。 (3)繼承性強(qiáng),工藝設(shè)計(jì)的標(biāo)準(zhǔn)化和最優(yōu)化得到提高。 [1]迄今為止,國(guó)內(nèi)外在 CAPP技術(shù)研究與系統(tǒng)開(kāi)發(fā)已投入大量的資金與人力,已開(kāi)發(fā)出為數(shù)眾多的 CAPP系統(tǒng)。表現(xiàn)在 :開(kāi)發(fā)多,應(yīng)用少;開(kāi)發(fā)投入多,應(yīng)用維護(hù)幾乎無(wú)投入 ; 原型系統(tǒng)多,得到實(shí)際生產(chǎn)應(yīng)用的系統(tǒng)較少;商品系統(tǒng)很少,而且功能不足;同 CAD、 CAN、 MIS(Management Information System,管理信息系統(tǒng) )、 PDM等相關(guān)計(jì)算機(jī)輔助技術(shù)相比,差距相當(dāng)大。在企業(yè)中,所有生產(chǎn)活動(dòng)都是圍繞著產(chǎn)品結(jié)構(gòu)而展開(kāi)的,一個(gè)產(chǎn)品的生產(chǎn)過(guò)程實(shí)際上就是這個(gè)產(chǎn)品所有屬性的生成過(guò)程。從企業(yè)管理角度來(lái)看,工裝設(shè)備、材料及輔料、外協(xié)件、工時(shí)定額等各類統(tǒng)計(jì)匯總功能,各種產(chǎn)品各個(gè)階段不同版本的工藝文件和工裝、工具文件的歸檔與更改等產(chǎn)品工藝管理工作,占有十分重要的地位 ; 企業(yè)工藝人員的很大部分時(shí)間用于工藝數(shù)據(jù)的匯總統(tǒng)計(jì)、重復(fù)填寫(xiě)等工作上,不僅效率低,而且很難保證工藝信息及文件的準(zhǔn)確性、一致性。 (3)CAPP必須提供技術(shù)信息系統(tǒng)與管理信息系統(tǒng) (MRP)所必須的機(jī)內(nèi)信息,這些信息能符合全廠計(jì)算機(jī)系統(tǒng)數(shù)據(jù)共享、系統(tǒng)集成的要求。以 PDM系統(tǒng)作為集成框架 , 將已有的傳統(tǒng)應(yīng)用軟件 Auto CAD和 CAPP等進(jìn)行有機(jī)的集成 , 這時(shí) CAD、 CAPP系統(tǒng)就會(huì)成為產(chǎn)品開(kāi)發(fā)總環(huán)境下的有機(jī)組成部分。 參考文獻(xiàn) [1] 張世昌 . 機(jī)械制造技術(shù)基礎(chǔ) [M] . 天津 : 天津大學(xué)出版社 , 2020. [2] 魏鑒梅 . 結(jié)構(gòu)件制造技術(shù) [M] . 北京 : 科學(xué)出版社 , 2020. [3] 甘仞初 . 信息資源的組織與管理 [M] .北京 : 機(jī)械工業(yè)出版社, 2020 附件 2:外文原文 Comprehensive Application of Several 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 mechanical manufacturing, put forward Viewpoints: take PDM system’s integrated framework ,bine Auto CAD with CAPP, making the developing platform of CAPP develop towards uniform. 〔 Key words〕 Group technology GT; CAPP software; PDM technology In recent years, with the improvement of puter and work technology and application software’s development and promotion, more and more pany used a variety of application software systems to improve producing design and production level and work efficiency. How to further improve (or an organic integration) used by the applications, and how to solve using a single application of the system functions when inpatibility issues, these will bee the focus of attention of many to use side. In this paper, take the preparation of mechanisms for process planning for example, briefly describing and analyzing the current application of several advanced technologies’ basic method and its integrated applications, and discussing how to achieve puteraided process design and software development platform for CAPP to a unified development. 1. Group Technology(GT) 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 workshop. When the processing of an object bee from one part into another part within the same group, due to the similar of technical requirements, structure, process, you do not change the processing method and processing equipment, and even controlling the cam, block railways and industrial fixtures are do not change. It is simply to make adjustments, will be processing [1,2]. According to production organize ponents into groups, we accord the parts of the structural characteristics, process characteristics and processing equipment characteristics to group, classification and code for each of the ponents, and then establish the typical ponents of each type of library and the processing technology of group library. Processing techn
點(diǎn)擊復(fù)制文檔內(nèi)容
畢業(yè)設(shè)計(jì)相關(guān)推薦
文庫(kù)吧 www.dybbs8.com
備案圖鄂ICP備17016276號(hào)-1