這是一個(gè)關(guān)于機(jī)械工程專(zhuān)業(yè)英語(yǔ)介紹PPT課件，主要介紹研究產(chǎn)品的尺寸、形狀和詳細(xì)結(jié)構(gòu)的基本構(gòu)思，還要研究產(chǎn)品在制造、銷(xiāo)售和使用等方面的問(wèn)題�，F(xiàn)代技術(shù)對(duì)零件尺寸精度的要求越來(lái)越嚴(yán)格。而且，目前許多零部件是由散步在各地的不同廠家生產(chǎn)的，因此必須對(duì)這些零件的尺寸和生產(chǎn)作出嚴(yán)格的規(guī)定，以保證它們具有互換性。在不影響零件性能的情況下，應(yīng)當(dāng)給尺寸盡可能大的公差，以把生產(chǎn)成本降至最低。制造成本會(huì)隨著公差的降低而升高。9 Introduction to Mechanical Design Tolerance，公差 Basic size 基本尺寸 Actual size 實(shí)際尺寸 Deviation 偏差 Upper deviation 上偏差 Lower deviation 下偏差 Tolerance symbols 公差符號(hào) Roughness 粗糙度，歡迎點(diǎn)擊下載機(jī)械工程專(zhuān)業(yè)英語(yǔ)介紹PPT課件哦。

機(jī)械工程專(zhuān)業(yè)英語(yǔ)介紹PPT課件是由紅軟PPT免費(fèi)下載網(wǎng)推薦的一款學(xué)校PPT類(lèi)型的PowerPoint.

TECHNICAL ENGLISH MECHANICAL ENGINEERING YAN NU 9. Introduction to Mechanical Design 9 Introduction to Mechanical Design Bug ： A defect in a system or design 9 Introduction to Mechanical Design Mechanical design is the application of science and technology to devise new or improved products for the purpose of satisfying human needs. It is a vast field of engineering technology which not only concerns itself with the original conception of the product in terms of its size， shape and construction details， but also considers the various factors involved in the manufacture， marketing and use of the product. 9 Introduction to Mechanical Design Mechanical design is the application of science and technology to devise new or improved products for the purpose of satisfying human needs. It is a vast field of engineering technology which not only concerns itself with the original conception of the product in terms of its size， shape and construction details， but also considers the various factors involved in the manufacture， marketing and use of the product. 9 Introduction to Mechanical Design Mechanical design should be considered to be an opportunity to use innovative talents to envision a design of a product， to analyze the system and then make sound judgments on how the product is to be manufactured. It is important to understand the fundamentals of engineering rather than memorize mere facts and equations. There are no facts or equations which alone can be used to provide all the correct decisions required to produce a good design. 9 Introduction to Mechanical Design Mechanical design should be considered to be an opportunity to use innovative talents to envision a design of a product， to analyze the system and then make sound judgments on how the product is to be manufactured. It is important to understand the fundamentals of engineering rather than memorize mere facts and equations. There are no facts or equations which alone can be used to provide all the correct decisions required to produce a good design. 9 Introduction to Mechanical Design During the beginning stages of design， creativity should be allowed to flourish without a great number of constraints. Even though many impractical ideas may arise， it is usually easy to eliminate them in the early stages of design before firm details are required by manufacturing. In this way， innovative ideas are not inhibited. Quite often， more than one design is developed， up to the point where they can be compared against each other. 9 Introduction to Mechanical Design 在設(shè)計(jì)的初始階段，應(yīng)該允許設(shè)計(jì)人員充分發(fā)揮創(chuàng)造性，不受各種約束。即使產(chǎn)生了許多不切合實(shí)際的想法，也會(huì)在設(shè)計(jì)的早期，即繪制生產(chǎn)圖紙之前被改正掉。只有這樣，才不至于堵塞創(chuàng)新的思路。通常要提出幾套設(shè)計(jì)方案，然后加以比較。 9 Introduction to Mechanical Design Another important point which should be recognized is that a design engineer must be able to communicate ideas to other people if they are to be incorporated. Communicating the design to others is the final， vital step in the design process. Undoubtedly many great designs， inventions， and creative works have been lost to mankind simply because the originators were unable or unwilling to explain their accomplishments to others. 9 Introduction to Mechanical Design Another important point which should be recognized is that a design engineer must be able to communicate ideas to other people if they are to be incorporated. Communicating the design to others is the final， vital step in the design process. Undoubtedly many great designs， inventions， and creative works have been lost to mankind simply because the originators were unable or unwilling to explain their accomplishments to others. 9 Introduction to Mechanical Design The competent engineer should not be afraid of the possibility of not succeeding in a presentation. In fact， occasional failure should be expected because failure or criticism seems to accompany every really creative idea. There is a great deal to be learned from a failure， and the greatest gains are obtained by those willing to risk defeat. 9 Introduction to Mechanical Design The competent engineer should not be afraid of the possibility of not succeeding in a presentation. In fact， occasional failure should be expected because failure or criticism seems to accompany every really creative idea. There is a great deal to be learned from a failure， and the greatest gains are obtained by those willing to risk defeat. 9 Introduction to Mechanical Design Translation exercise: Today’s technology requires that parts be specified with increasingly exact dimensions(尺寸）. Many parts made by different companies at widely separated locations must be interchangeable， which requires precise size specifications production. 現(xiàn)代技術(shù)對(duì)零件尺寸精度的要求越來(lái)越嚴(yán)格。而且，目前許多零部件是由散步在各地的不同廠家生產(chǎn)的，因此必須對(duì)這些零件的尺寸和生產(chǎn)作出嚴(yán)格的規(guī)定，以保證它們具有互換性。 9 Introduction to Mechanical Design The technique of dimensioning parts within a required range of variation to ensure interchangeable is called tolerancing. Each dimension is allowed a certain degree of variation within a specified zone， or tolerance. For example， a part’ dimension might be expressed as 20±0.50， which allows a tolerance (variation in size) of 1.00 mm. 給零件標(biāo)注尺寸使其在一個(gè)規(guī)定的區(qū)間內(nèi)變動(dòng)，以保證它們具有互換性的技術(shù)稱為公差技術(shù)。允許每個(gè)尺寸在規(guī)定范圍內(nèi)具有一定的變動(dòng)量，稱為公差。例如，一個(gè)零件的尺寸可以被表示成20±0.50，其公差（尺寸變動(dòng)量）為1.00 mm。 9 Introduction to Mechanical Design A tolerance should be as large as possible without interfering with the function of the part to minimize production costs. Manufacturing costs increase as tolerance become smaller. 在不影響零件性能的情況下，應(yīng)當(dāng)給尺寸盡可能大的公差，以把生產(chǎn)成本降至最低。制造成本會(huì)隨著公差的降低而升高。 9 Introduction to Mechanical Design Tolerance， 公差 Basic size 基本尺寸 Actual size 實(shí)際尺寸 Deviation 偏差 Upper deviation 上偏差 Lower deviation 下偏差 Tolerance symbols 公差符號(hào) Roughness 粗糙度lLq紅軟基地

機(jī)械工程專(zhuān)業(yè)英語(yǔ)翻譯PPT課件：這是一個(gè)關(guān)于機(jī)械工程專(zhuān)業(yè)英語(yǔ)翻譯PPT課件，主要介紹機(jī)械工程的專(zhuān)業(yè)英語(yǔ)的相關(guān)內(nèi)容。機(jī)械工程 專(zhuān)業(yè)英語(yǔ)課程介紹學(xué)習(xí)專(zhuān)業(yè)英語(yǔ)的重要性學(xué)習(xí)目的為何在大三開(kāi)設(shè)這門(mén)課程專(zhuān)業(yè)英語(yǔ)的英文名稱“專(zhuān)業(yè)英語(yǔ)”----- English for Special Purpose Specified English for ……. “機(jī)械工程專(zhuān)業(yè)英語(yǔ)” Specified English for Mechanical Engineering 專(zhuān)業(yè)英語(yǔ)和普通英語(yǔ)的區(qū)別 一. 詞義特點(diǎn) 1. 根據(jù)詞類(lèi)辨明詞義 e.g: (1) Round (adj.) surface reflector is a key unit for the solar energy device. 曲面反射器是太陽(yáng)能裝置的關(guān)鍵元件。 ( 2) This is the whole round (n.) of knowledge. 這是全部知識(shí)范圍。 2. 區(qū)分場(chǎng)合確定詞義（不同的場(chǎng)合，詞義也不一樣。要根據(jù) 上下文和語(yǔ)言環(huán)境來(lái)確定詞義） e.g: (1) pig: 豬 ~ iron 生鐵 (機(jī)械專(zhuān)業(yè)) ~ metal 金屬錠 ~ copper 生銅 (2) dog: 狗 (機(jī)械專(zhuān)業(yè)) ~ 雞心夾頭, 擋塊 3. 按照習(xí)慣搭配詞義 e.g: (1) I have a short memory. (2) This biscuit eats short. (3) Indeed he has a short temper. 4. 聯(lián)系上下文活用詞義 e.g: (1) There is no physical contact between tool and workpiece. 工具和工件之間沒(méi)有有形（直接）的接觸。 (2) High-speed grinding does not know this disadvantage 高速磨削不知道（存在）這個(gè)缺點(diǎn)，歡迎點(diǎn)擊下載機(jī)械工程專(zhuān)業(yè)英語(yǔ)翻譯PPT課件哦。

機(jī)械工程專(zhuān)業(yè)描述PPT課件：這是一個(gè)關(guān)于機(jī)械工程專(zhuān)業(yè)描述PPT課件，主要介紹現(xiàn)代機(jī)械設(shè)計(jì)理論與方法、機(jī)械系統(tǒng)動(dòng)力學(xué)、機(jī)電一體化系統(tǒng)設(shè)計(jì)、第二模塊：數(shù)控技術(shù)、先進(jìn)制造技術(shù)、精密與特種加工、第三模塊：機(jī)電傳動(dòng)控制、狀態(tài)監(jiān)測(cè)與故障診斷、可編程控制技術(shù)。課程模塊第一模塊：現(xiàn)代機(jī)械設(shè)計(jì)理論與方法、機(jī)械系統(tǒng)動(dòng)力學(xué)、機(jī)電一體化系統(tǒng)設(shè)計(jì)第二模塊：數(shù)控技術(shù)、先進(jìn)制造技術(shù)、精密與特種加工第三模塊：機(jī)電傳動(dòng)控制、狀態(tài)監(jiān)測(cè)與故障診斷、可編程控制技術(shù)第四模塊：發(fā)動(dòng)機(jī)原理、工程車(chē)輛設(shè)計(jì)、車(chē)輛構(gòu)造第五模塊：測(cè)控電路、自動(dòng)控制元件、測(cè)控儀器設(shè)計(jì)研討課：煤礦綜采自動(dòng)、機(jī)械創(chuàng)新設(shè)計(jì)、液壓傳動(dòng)系統(tǒng)、機(jī)電設(shè)備管理雙語(yǔ)課： Foundation of Mechanical Engineering and Automation(機(jī)械工程及自動(dòng)化基礎(chǔ)) Introduction of MEMS Technology(MEMS微機(jī)電系統(tǒng)技術(shù)概論) Contemporary integrated manufacturing system(現(xiàn)代集成制造系統(tǒng)) The Technology of Robot(機(jī)器人技術(shù)) 現(xiàn)代機(jī)械設(shè)計(jì)理論與方法先修課程：高等數(shù)學(xué)、概率論與數(shù)理統(tǒng)計(jì)、機(jī)械制圖、工程力學(xué)、機(jī)械原理、機(jī)械設(shè)計(jì)內(nèi)容簡(jiǎn)介：本課講述現(xiàn)代機(jī)械設(shè)計(jì)的基本概念、思想和方法，并通過(guò)實(shí)例說(shuō)明現(xiàn)代設(shè)計(jì)的具體應(yīng)用。其主要內(nèi)容包括目前國(guó)際最流行的創(chuàng)新設(shè)計(jì)、綠色設(shè)計(jì)、穩(wěn)健設(shè)計(jì)、并行設(shè)計(jì)、反求工程設(shè)計(jì)、動(dòng)態(tài)分析設(shè)計(jì)等現(xiàn)代設(shè)計(jì)方法；和現(xiàn)已普及應(yīng)用的優(yōu)化設(shè)計(jì)、有限元設(shè)計(jì)、可靠性設(shè)計(jì)等現(xiàn)代設(shè)計(jì)方法。對(duì)優(yōu)化設(shè)計(jì)、有限元設(shè)計(jì)、可靠性設(shè)計(jì)等成熟理論和方法作重點(diǎn)介紹。機(jī)械系統(tǒng)動(dòng)力學(xué)先修課程：高等數(shù)學(xué)，機(jī)械制圖，理論力學(xué)，材料力學(xué)，機(jī)械原理，機(jī)械設(shè)計(jì)，計(jì)算機(jī)語(yǔ)言內(nèi)容簡(jiǎn)介：機(jī)械系統(tǒng)動(dòng)力學(xué)是機(jī)械動(dòng)力類(lèi)專(zhuān)業(yè)的專(zhuān)業(yè)選修課程，本課程的任務(wù)是使學(xué)生獲得機(jī)械系統(tǒng)動(dòng)力學(xué)的基本理論與基本方法，目的在于培養(yǎng)學(xué)生研究機(jī)械系統(tǒng)中回轉(zhuǎn)構(gòu)件的扭轉(zhuǎn)振動(dòng)與臨界轉(zhuǎn)速，桿的縱向振動(dòng)，剛性轉(zhuǎn)子彈性支承的動(dòng)力學(xué)分析，計(jì)入轉(zhuǎn)軸激勵(lì)的雙圓盤(pán)系統(tǒng)動(dòng)力學(xué)，弦的橫向自由振動(dòng)，齒輪系統(tǒng)的振動(dòng)與固有頻率，凸輪機(jī)構(gòu)的動(dòng)力學(xué)。機(jī)電一體化系統(tǒng)設(shè)計(jì)先修課程：機(jī)械原理、機(jī)械設(shè)計(jì)、電工技術(shù)與電子技術(shù)、測(cè)試技術(shù)、控制工程基礎(chǔ)、單片微機(jī)原理與接口技術(shù)等內(nèi)容簡(jiǎn)介：本課程是機(jī)械設(shè)計(jì)及其自動(dòng)化專(zhuān)業(yè)方向的專(zhuān)業(yè)核心課程，歡迎點(diǎn)擊下載機(jī)械工程專(zhuān)業(yè)描述PPT課件哦。

機(jī)械工程專(zhuān)業(yè)介紹PPT課件：這是一個(gè)關(guān)于機(jī)械工程專(zhuān)業(yè)介紹PPT課件，主要介紹機(jī)械工程是以有關(guān)的自然科學(xué)和技術(shù)科學(xué)為理論基礎(chǔ)，結(jié)合生產(chǎn)實(shí)踐中的技術(shù)經(jīng)驗(yàn)，研究和解決在開(kāi)發(fā)、設(shè)計(jì)、制造、安裝、運(yùn)用和修理各種機(jī)械中的全部理論和實(shí)際問(wèn)題的應(yīng)用學(xué)科。機(jī)械工程 1、什么是機(jī)械工程？ 機(jī)械工程是以有關(guān)的自然科學(xué)和技術(shù)科學(xué)為理論基礎(chǔ)，結(jié)合生產(chǎn)實(shí)踐中的技術(shù)經(jīng)驗(yàn)，研究和解決在開(kāi)發(fā)、設(shè)計(jì)、制造、安裝、運(yùn)用和修理各種機(jī)械中的全部理論和實(shí)際問(wèn)題的應(yīng)用學(xué)科。 2、機(jī)械工程的發(fā)展史 2、機(jī)械工程的發(fā)展史 公元前三~四千年左右，人類(lèi)發(fā)現(xiàn)金屬，學(xué)會(huì)熔煉，制造出任意形狀的青銅工具。 2、機(jī)械工程的發(fā)展史近代：工業(yè)革命 1）從手動(dòng)到自動(dòng) ①1733年約翰·凱伊的飛梭 2、機(jī)械工程的發(fā)展史 ②1738年懷特·鮑爾的滾筒 2、機(jī)械工程的發(fā)展史 ③卡特賴托的動(dòng)力紡織機(jī) 1786年，改進(jìn)后，成功使各種動(dòng)作實(shí)現(xiàn)了自動(dòng)化，如穿梭、綜 絖（為制道梭道使經(jīng)線向上的用具）舉起，停止緯線的方向、卷經(jīng)線、取下織成的織物、經(jīng)線上漿等。 2、機(jī)械工程的發(fā)展史 ④從大氣壓的發(fā)現(xiàn)到蒸汽機(jī)的完成 瓦特的蒸汽機(jī) 2、機(jī)械工程的發(fā)展史 2、機(jī)械工程的發(fā)展史 ⑤機(jī)床的問(wèn)世 2、機(jī)械工程的發(fā)展史 2、機(jī)械工程的發(fā)展史 ⑥開(kāi)始了鋼鐵時(shí)代 2、機(jī)械工程的發(fā)展史 ⑦動(dòng)力的發(fā)展與進(jìn)步 蒸汽機(jī)車(chē) 2、機(jī)械工程的發(fā)展史 汽輪機(jī)、水輪機(jī) 2、機(jī)械工程的發(fā)展史戴姆勒28歲以前一直在學(xué)習(xí)機(jī)械方面的理論和實(shí)踐知識(shí)，1872年進(jìn)入奧托公司工作，1882年，他辭掉了工作，和邁巴赫共同在堪休塔特建立了汽車(chē)試驗(yàn)廠。戴姆勒在工廠開(kāi)始了研究，首先發(fā)明了汽油的發(fā)動(dòng)機(jī)。發(fā)明白熱管點(diǎn)火法，制造出900r/min的內(nèi)燃機(jī)，歡迎點(diǎn)擊下載機(jī)械工程專(zhuān)業(yè)介紹PPT課件哦。