【文章內(nèi)容簡介】 位需求。數(shù)控技術(shù)應用培養(yǎng)目標：本專業(yè)培養(yǎng)掌握數(shù)控技術(shù)及應用等方面的專業(yè)知識和必要的文化基礎(chǔ)知識，具有數(shù)控機床、加工中心等設(shè)備的操作、安裝、調(diào)試、維護的能力，能適應社會主義市場經(jīng)濟的生產(chǎn)、建設(shè)、服務、管理等一線需要的德、智、體、美、全面發(fā)展的中、初級數(shù)控技術(shù)實用性專門人才。機械制圖、機械基礎(chǔ)、金屬加工技術(shù)、電工技術(shù)、電氣控制技術(shù)、公差配合與測量技術(shù)、CAD/CAM、數(shù)控技術(shù)基礎(chǔ)、數(shù)控仿真加工技術(shù)、數(shù)控加工工藝與工裝、數(shù)控專業(yè)外語等課程。適應崗位：主要從事數(shù)控設(shè)備的操作、安裝、調(diào)試、編程、維護工作、CAD/CAM軟件的應用工作、車間生產(chǎn)和技術(shù)管理等工作。/2機械類專業(yè)介紹模具設(shè)計與制造專業(yè)培養(yǎng)目標：培養(yǎng)學生成為具有較強的模具設(shè)計、制造、維修能力及相關(guān)設(shè)備的操作、維護技能的應用型人才。主要課程：機械制圖、機械基礎(chǔ)、模具材料、模具制造、模具結(jié)構(gòu)設(shè)計、電工基礎(chǔ)、ProE、金屬工藝學、模具CAD/CAM。適應崗位：從事模具的設(shè)計和制造；金屬材料、塑料等制品的成型、工藝規(guī)程編制；沖壓與塑料成型機械的安裝、調(diào)試、維護等工作。焊接專業(yè)培養(yǎng)目標：本專業(yè)主要培養(yǎng)目標是培養(yǎng)掌握金屬材料焊接技術(shù)基本理論，熟練運用焊接操作技術(shù)，具有分析和解決生產(chǎn)現(xiàn)場工藝和質(zhì)量問題的能力，具備從事焊接技術(shù)工作所需要的理論知識和應用能力，適應生產(chǎn)、建設(shè)、管理、服務第一線需要的技術(shù)應用型專門人才。主要課程：計算機應用基礎(chǔ)、機械制圖、電工與電子技術(shù)、機械基礎(chǔ)、焊接工藝學、焊接方法與設(shè)備、結(jié)構(gòu)生產(chǎn)工藝與工裝、焊接檢驗、焊接結(jié)構(gòu)、焊接質(zhì)量管理、鋼結(jié)構(gòu)等。適應崗位：從事鉗工、機械制造和焊工及設(shè)備的安裝、調(diào)試、維修及管理等。五、機電技術(shù)應用專業(yè)培養(yǎng)目標：本專業(yè)培養(yǎng)具有從事機電技術(shù)必需的理論知識和綜合職業(yè)能力的機電設(shè)備、自動化設(shè)備和生成線的運行與維護人員。該專業(yè)學生需掌握機械、電工與電子技術(shù)、自動控制等方面的基礎(chǔ)知識及典型機電設(shè)備的結(jié)構(gòu)與工作原理，具有一般機械加工操作能力和編制簡單零件工藝流程的能力，具有機電自動化設(shè)備安裝、調(diào)試、運行和維修的基本能力。主要課程：機械基礎(chǔ)、機械制圖、電子與電子技術(shù)基礎(chǔ)、金屬工藝學、機電設(shè)備概論、鉗工工藝與技能訓練、車工、機床數(shù)控技術(shù)、家電維修、金屬加工與熱處理。適應崗位：車工、鉗工、機修工、電工、電氣裝配與維護。/ 2第四篇：機械類專業(yè)英語翻譯EXTENDING BEARING LIFE Bearings fail for a number of reasons，but the most mon are misapplication，contamination，improper lubricant，shipping or handling damage，and problem is often not difficult to diagnose because a failed bearing usually leaves telltale signs about what went wrong．However，while a postmortem yields good information，it is better to avoid the process altogether by specifying the bearing correctly in The first place．To do this，it is useful to review the manufacturers sizing guidelines and operating characteristics for the selected critical is a study of requirements for noise, torque, and runout, as well as possible exposure to contaminants, hostile liquids, and temperature can provide further clues as to whether a bearing is right for a Why bearings fail About 40% of ball bearing failures are caused by contamination from dust, dirt, shavings, and also causes torque and noise problems, and is often the result of improper handling or the application environment．Fortunately, a bearing failure caused by environment or handling contamination is preventable，and a simple visual examination can easily identify the cause．Conducting a postmortem il1ustrates what to look for on a failed or failing bearing．Then，understanding the mechanism behind the failure, such as brinelling or fatigue, helps eliminate the source of the is one type of bearing failure easily avoided by proper handing and is characterized by indentations in the bearing raceway caused by shock loading－such as when a bearing is droppedor incorrect usually occurs when loads exceed the material yield point(350,000 psi in SAE 52100 chrome steel)．It may also be caused by improper assembly, Which places a load across the races．Raceway dents also produce noise，vibration，and increased similar defect is a pattern of elliptical dents caused by balls vibrating between raceways while the bearing is not tur