生產過程
機器的生(sheng)(sheng)(sheng)產(chan)(chan)過程(cheng)(cheng)是指(zhi)從原(yuan)材料(或半(ban)成(cheng)品)制(zhi)成(cheng)產(chan)(chan)品的全部過程(cheng)(cheng)。對機器生(sheng)(sheng)(sheng)產(chan)(chan)而言包(bao)括(kuo)原(yuan)材料的運(yun)輸(shu)和(he)(he)保存,生(sheng)(sheng)(sheng)產(chan)(chan)的準備(bei),毛坯的制(zhi)造,零件(jian)的加(jia)工和(he)(he),產(chan)(chan)品的裝配、及調試,油漆和(he)(he)包(bao)裝等內(nei)容(rong)(rong)。生(sheng)(sheng)(sheng)產(chan)(chan)過程(cheng)(cheng)的內(nei)容(rong)(rong)十分廣泛(fan),現代企業用系統工程(cheng)(cheng)學的原(yuan)理和(he)(he)方法(fa)組織生(sheng)(sheng)(sheng)產(chan)(chan)和(he)(he)指(zhi)導生(sheng)(sheng)(sheng)產(chan)(chan),將(jiang)生(sheng)(sheng)(sheng)產(chan)(chan)過程(cheng)(cheng)看成(cheng)是一個具(ju)有輸(shu)入和(he)(he)輸(shu)出(chu)的生(sheng)(sheng)(sheng)產(chan)(chan)系統。
在生產(chan)過(guo)程(cheng)(cheng)中(zhong),凡是改變(bian)生產(chan)對象(xiang)的(de)(de)(de)形(xing)狀、尺寸、位置(zhi)和(he)(he)性質等(deng),使其成為(wei)成品(pin)或(huo)者(zhe)半成品(pin)的(de)(de)(de)過(guo)程(cheng)(cheng)稱(cheng)為(wei)工(gong)(gong)(gong)(gong)藝過(guo)程(cheng)(cheng)。它是生產(chan)過(guo)程(cheng)(cheng)的(de)(de)(de)主(zhu)要部分(fen)(fen)。又可分(fen)(fen)為(wei)鑄造、、、焊(han)接、機(ji)械加工(gong)(gong)(gong)(gong)、等(deng)工(gong)(gong)(gong)(gong)藝過(guo)程(cheng)(cheng),機(ji)械制造工(gong)(gong)(gong)(gong)藝過(guo)程(cheng)(cheng)一般是指零件的(de)(de)(de)機(ji)械加工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝過(guo)程(cheng)(cheng)和(he)(he)機(ji)器的(de)(de)(de)裝配工(gong)(gong)(gong)(gong)藝過(guo)程(cheng)(cheng)的(de)(de)(de)總和(he)(he),其他過(guo)程(cheng)(cheng)則稱(cheng)為(wei)輔助過(guo)程(cheng)(cheng),例如運輸(shu)、保管(guan)、動力供應、設備維修等(deng)。工(gong)(gong)(gong)(gong)藝過(guo)程(cheng)(cheng)又是由一個(ge)或(huo)若(ruo)干個(ge)順(shun)序(xu)(xu)排列的(de)(de)(de)工(gong)(gong)(gong)(gong)序(xu)(xu)組成的(de)(de)(de),一個(ge)工(gong)(gong)(gong)(gong)序(xu)(xu)由有若(ruo)干個(ge)工(gong)(gong)(gong)(gong)步組成。
工(gong)藝過程
工(gong)(gong)(gong)序(xu)是組成(cheng)機械加工(gong)(gong)(gong)工(gong)(gong)(gong)藝(yi)過(guo)程的基本單元(yuan)。所謂(wei)工(gong)(gong)(gong)序(xu)是指一個(或(huo)一組)工(gong)(gong)(gong)人,在一臺機床(chuang)上(或(huo)一個工(gong)(gong)(gong)作(zuo)地點),對(dui)同(tong)一工(gong)(gong)(gong)件(jian)(jian)(或(huo)同(tong)時(shi)對(dui)幾個工(gong)(gong)(gong)件(jian)(jian))所連(lian)續完成(cheng)的那一部(bu)分工(gong)(gong)(gong)藝(yi)過(guo)程。構成(cheng)一個工(gong)(gong)(gong)序(xu)的主要特點是不改變加工(gong)(gong)(gong)對(dui)象、設備和(he)操作(zuo)者(zhe),而(er)且工(gong)(gong)(gong)序(xu)的內(nei)容是連(lian)續完成(cheng)的
工步是在加(jia)(jia)工表(biao)面不變(bian)、加(jia)(jia)工工具不變(bian)、切削用量不變(bian)的條(tiao)件下
又叫工作行(xing)程,是加工工具在加工表面(mian)上加工一次所完成的工步。
制定(ding)機械(xie)加(jia)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)過程(cheng),必須確定(ding)該工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)件要(yao)經過幾道工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)序(xu)以及(ji)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)序(xu)進(jin)行的(de)先后順序(xu),僅列出主要(yao)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)序(xu)名稱及(ji)其加(jia)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)順序(xu)的(de)簡略工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)過程(cheng),稱為工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)路(lu)線(xian)。
工(gong)(gong)藝路線(xian)的擬(ni)定是制定工(gong)(gong)藝過程的總體布局(ju),主要任務是選(xuan)擇各個表(biao)面的加(jia)工(gong)(gong)方(fang)法,確(que)定各個表(biao)面的加(jia)工(gong)(gong)順序,以(yi)及整個工(gong)(gong)藝過程中工(gong)(gong)序數目的多少等。工(gong)(gong)藝路線(xian)擬(ni)定須遵循一定的原則(ze)。
批量生產的零件
3.大(da)(da)(da)批量生(sheng)產:產品的(de)(de)制(zhi)造數(shu)量很大(da)(da)(da),大(da)(da)(da)多(duo)數(shu)工(gong)作地點經常是(shi)重復進行某一個零件的(de)(de)某一道工(gong)序的(de)(de)加工(gong)。
應能(neng)保(bao)證機器(qi)零件的(de)加(jia)工質(zhi)量(liang)(或機器(qi)的(de)裝(zhuang)配質(zhi)量(liang)),達到設(she)計圖樣上規(gui)定(ding)的(de)各(ge)項技術要求(qiu)。
(2)應使(shi)工藝過程(cheng)有較高的生產(chan)率(lv),使(shi)產(chan)品盡快投放市(shi)場。
(3)設法降低
(4)注意減輕工人的勞(lao)動強度,保證生產(chan)安全(quan)。
原始資(zi)料:
(1)產品裝配圖(tu),零(ling)件圖(tu)。
(2)產(chan)品驗收質量(liang)標(biao)準(zhun)。
(3)產品(pin)的年生產綱領。
(5)制(zhi)造廠(chang)的(de)生產條件,包括機床設(she)備(bei)(bei)和(he)工(gong)藝(yi)設(she)備(bei)(bei)的(de)規(gui)格、性能和(he)現(xian)有的(de)狀(zhuang)態、工(gong)人(ren)的(de)技(ji)術(shu)水平、工(gong)廠(chang)自制(zhi)工(gong)藝(yi)裝備(bei)(bei)的(de)能力以及工(gong)廠(chang)供(gong)電(dian)、供(gong)氣的(de)能力等(deng)有關資料。
(6)工藝規程設(she)計(ji)(ji)(ji)、工藝裝(zhuang)備設(she)計(ji)(ji)(ji)所需要的設(she)計(ji)(ji)(ji)手冊和有(you)關標準。
(7)國(guo)內外先進(jin)制造(zao)技術(shu)資料等。
步驟內容:
(1)分析研究產品的(de)裝配圖和零(ling)件圖。
(2)確定毛坯。
(3)擬定工藝路線,選擇(ze)定位基面(mian)。
(4)確定各工序所采用(yong)的(de)設備(bei)。
(5)確(que)定各(ge)工序所采用的(de)刀具(ju)、夾具(ju)、量具(ju)和輔助工具(ju)。
(6)確(que)定各主要工序(xu)的技術要求及檢驗方法。
(7)確定各工(gong)序(xu)的加(jia)工(gong)余量(liang),計算工(gong)序(xu)尺寸和公差。
(8)確定切(qie)削用(yong)量。
(9)確定工時定額。
和兩類。
模(mo)具(ju)設計制(zhi)造
4、 風洞燃燒(shao)室設計制造;
5、 非標(biao)設備設計制(zhi)造。
6、 模(mo)具設計(ji)制造。
、數(shu)顯成(cheng)型磨(mo)(mo)床、數(shu)顯車床、、萬能(neng)磨(mo)(mo)床、加工(gong)中心、、中走(zou)、、、內圓磨(mo)(mo)床、精(jing)密車床等,可進行精(jing)密零件(jian)的車、銑(xian)、刨、磨(mo)(mo)等加工(gong), 此類機械(xie)擅長精(jing)密零件(jian)的車、銑(xian)、刨、磨(mo)(mo)等加工(gong),可以加工(gong)各種不規則形狀零件(jian),加工(gong)精(jing)度可達(da)2μm。
加工(gong)(gong)技術、快速成形技術、精(jing)密(mi)超精(jing)密(mi)加工(gong)(gong)技術等。
微型機械加(jia)工技術(shu)
機械產(chan)品
隨著微(wei)/納(na)米科學與技(ji)(ji)術(shu)(shu)(Micro/Nano Science and Technology)的(de)(de)發展,以本身形(xing)狀尺寸微(wei)小(xiao)或操(cao)作尺度(du)極小(xiao)為特征的(de)(de)已成為人們認識和(he)改(gai)造微(wei)觀世界(jie)的(de)(de)一種高新科技(ji)(ji)。微(wei)機械由于具有(you)能夠(gou)在狹小(xiao)空間內進(jin)行(xing)作業(ye),而(er)又不擾(rao)亂工作環境(jing)和(he)對象的(de)(de)特點(dian),在航空航天、、生物(wu)醫療等領域有(you)著廣闊(kuo)的(de)(de)應用潛力,并(bing)成為納(na)米技(ji)(ji)術(shu)(shu)研究的(de)(de)重(zhong)要手段,因而(er)受到高度(du)重(zhong)視(shi)并(bing)被列(lie)為21世紀關鍵技(ji)(ji)術(shu)(shu)之首(shou)。
快(kuai)速成形機械加(jia)工技(ji)術
快速成(cheng)(cheng)形技(ji)(ji)術是(shi)(shi)20世紀(ji)發展(zhan)起來的(de)(de),可(ke)根據模型快速制造出樣件或者零件。它是(shi)(shi)一種材料累加加工制造方法,即通過(guo)材料的(de)(de)有序(xu)累加而完成(cheng)(cheng)三維(wei)成(cheng)(cheng)形的(de)(de)。快速成(cheng)(cheng)形技(ji)(ji)術集成(cheng)(cheng)了、材料技(ji)(ji)術、以及CAD技(ji)(ji)術等現代的(de)(de)科技(ji)(ji)成(cheng)(cheng)果(guo),是(shi)(shi)現代先進機械加工技(ji)(ji)術的(de)(de)重(zhong)要組(zu)成(cheng)(cheng)部分。
精(jing)密(mi)超精(jing)密(mi)機械加(jia)工技術
精密和超精密加工(gong)時現代(dai)(dai)機械加工(gong)制(zhi)造(zao)技術(shu)的(de)(de)一個(ge)重(zhong)要組成(cheng)部(bu)分,是衡量(liang)一個(ge)國(guo)家高科技制(zhi)造(zao)業(ye)水平高低的(de)(de)重(zhong)要指(zhi)標之一。20世紀60年代(dai)(dai)以(yi)來,隨著計(ji)算機及信息(xi)技術(shu)的(de)(de)發展,對制(zhi)造(zao)技術(shu)提出了更高的(de)(de)要求(qiu)(qiu),不僅要求(qiu)(qiu)獲得極(ji)高的(de)(de)尺寸、形位(wei)精度(du),而且要求(qiu)(qiu)獲得極(ji)高的(de)(de)表面質量(liang)。正是在這樣(yang)的(de)(de)市場需求(qiu)(qiu)下,超精密加工(gong)技術(shu)得到了迅速的(de)(de)發展,各種工(gong)藝(yi)、新方(fang)法不斷涌現。
政策支持
國(guo)務(wu)院通過的(de)(de)《裝(zhuang)(zhuang)備制(zhi)造業(ye)調整與(yu)(yu)振興(xing)規劃》,提出依(yi)托高(gao)速鐵路、煤(mei)礦(kuang)與(yu)(yu)金屬礦(kuang)采掘、基礎設施、科(ke)技重(zhong)大專項(xiang)等十大領(ling)域(yu)重(zhong)點工程(cheng),振興(xing)裝(zhuang)(zhuang)備制(zhi)造業(ye);抓住(zhu)九大產業(ye)重(zhong)點項(xiang)目(mu),實(shi)施裝(zhuang)(zhuang)備自主化;提升四大配套產品制(zhi)造水(shui)平。政策措施包括加(jia)強投資項(xiang)目(mu)的(de)(de)設備采購管理、鼓(gu)勵使(shi)用(yong)國(guo)產首臺套裝(zhuang)(zhuang)備、推進(jin)企業(ye)兼并重(zhong)組等。上述領(ling)域(yu)涉及(ji)了(le)經濟建設中的(de)(de)關鍵部門,也是(shi)我(wo)國(guo)機械行業(ye)發展中亟待突破的(de)(de)領(ling)域(yu),尤其是(shi)高(gao)檔數(shu)控(kong)機床和礦(kuang)用(yong)機械長期以來一(yi)直是(shi)我(wo)國(guo)制(zhi)造領(ling)域(yu)的(de)(de)薄弱環節,與(yu)(yu)國(guo)外先進(jin)水(shui)平有(you)明顯(xian)的(de)(de)差距(ju)。

