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18611776020
北京机械加工是(shi)一种用加工(gong)机械对工(gong)件(jian)的(de)外形尺寸或性能进行改(gai)变的(de)过程。
机械(xie)加(jia)工包(bao)括：灯丝电源(yuan)绕(rao)组、激光切(qie)割(ge)、重型加(jia)工、金属粘结、线(xian)切(qie)割(ge)，金属拉(la)拔(ba)、等离子(zi)切(qie)割(ge)、精(jing)密焊接(jie)、辊轧成型、金属板材(cai)弯(wan)曲成型、模锻、水喷射切(qie)割(ge)、精(jing)密焊接(jie)等。
机(ji)械(xie)加工(gong)是广义的(de)机(ji)械(xie)加工(gong)就是指(zhi)能用机(ji)械(xie)手段制(zhi)造产品(pin)的(de)过(guo)程；狭义的(de)是用车(che)床(chuang)（Lathe Machine）、铣(xian)床(chuang)(Milling Machine)、钻床(chuang)(Driling Machine)、磨床(chuang)(Grinding Machine)、冲(chong)压(ya)机(ji)、压(ya)铸机(ji)机(ji)等专用机(ji)械(xie)设备制(zhi)作零件(jian)的(de)过(guo)程。
一(yi)般在常温下加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)，并且(qie)不引起工(gong)(gong)(gong)(gong)件(jian)的(de)(de)化(hua)(hua)学或(huo)物相变化(hua)(hua)﹐称冷(leng)(leng)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。一(yi)般在高(gao)于(yu)或(huo)低于(yu)常温状(zhuang)态的(de)(de)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)﹐会(hui)引起工(gong)(gong)(gong)(gong)件(jian)的(de)(de)化(hua)(hua)学或(huo)物相变化(hua)(hua)﹐称热(re)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。冷(leng)(leng)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)按加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)方(fang)式的(de)(de)差(cha)别(bie)可分为切削加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)和压力加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。热(re)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)常见有热(re)处理﹐煅造﹐铸造和焊接。
在北京机械加工中常用的器械有：
加(jia)(jia)工(gong)需要的机械由数显铣(xian)床(chuang)、数显成型磨(mo)床(chuang)、数显车床(chuang)、电火(huo)花机、万能磨(mo)床(chuang)、加(jia)(jia)工(gong)中(zhong)心、激光焊(han)接、中(zhong)走(zou)丝(si)、快走(zou)丝(si)、慢走(zou)丝(si)、外(wai)圆磨(mo)床(chuang)、内(nei)圆磨(mo)床(chuang)、精(jing)(jing)密车床(chuang)等(deng)(deng)，可进行精(jing)(jing)密零(ling)件的车、铣(xian)、刨、磨(mo)等(deng)(deng)加(jia)(jia)工(gong)， 此(ci)类机械擅长精(jing)(jing)密零(ling)件的车、铣(xian)、刨、磨(mo)等(deng)(deng)加(jia)(jia)工(gong)，可以加(jia)(jia)工(gong)各(ge)种不规则形状零(ling)件，加(jia)(jia)工(gong)精(jing)(jing)度可达2μm。