
.數控立車具有普通車床沒有的特點 數控立車加工特點:shukonglicheshiyingxingqiangshiyingxingjisuoweiderouxing,shimubiaokongjichuangsuishengzhizaoduixiangbiandongerbiandongdeshiyingjiliang。zaishukongjichuangshangniuzhuanjiagongzhengjishi,zhidecongxinbianzhibuzhou,shuruxindebuzhouhoujiuhuoxuwanchengduixindezhengjidejiagong,erbudeniuzhuanjiqiyibu分和管製一部分的硬件,且生製造過程是踴躍完成的o這就為複雜結構整機的單件、小批量生製造以及試製新製造品提供了極大的方便。專業單柱數控立式機床適shi應ying性xing強qiang是shi數shu控kong機ji床chuang最zui突tu出chu的de好hao處chu,也ye是shi數shu控kong機ji床chuang得de以yi生sheng製zhi造zao和he急ji迅xun發fa展zhan的de主zhu要yao原yuan因yin。數shu控kong立li車che生sheng製zhi造zao屈qu從cong高gao整zheng機ji加jia工gong所suo需xu的de工gong夫fu主zhu要yao包bao括kuo靈ling活huo工gong夫fu和he攙chan扶fu幫bang助zhu工gong夫fu兩liang一yi部bu分fen。數shu控kong機ji床chuang主zhu軸zhou的de轉zhuan速su和he進jin給gei量liang的de變bian動dong範fan疇chou比bi平ping凡fan機ji床chuang大da,因yin此ci數shu控kong立li車che每mei一yi道dao工gong序xu均jun可ke選xuan用yong最zui晦hui氣qi的de切qie削xue量liang。由you於yu數shu控kong機ji床chuang結jie構gou剛gang性xing好hao,因yin此ci允yun許xu進jin行xing大da切qie削xue用yong量liang的de強qiang力li切qie削xue,這zhe就jiu提ti高gao丁ding數shu控kong機ji床chuang的de切qie削xue屈qu從cong,虛xu耗hao了le靈ling活huo工gong夫fu。數shu控kong機ji床chuang的de移yi動dong部bu件jian空kong行xing程cheng運yun動dong速su度du快kuai,工gong件jian裝zhuang夾jia工gong夫fu短duan,刀dao具ju可ke踴yong躍yue變bian動dong,攙chan扶fu幫bang助zhu工gong夫fu比bi一yi般ban機ji床chuang大da為wei減jian少shao。數shu控kong立li車che精jing度du高gao,品pin格ge固gu執zhi 數(shu)控(kong)立(li)車(che)是(shi)按(an)數(shu)字(zi)模(mo)式(shi)給(gei)出(chu)的(de)指(zhi)令(ling)進(jin)行(xing)加(jia)工(gong)的(de),一(yi)船(chuan)環(huan)境(jing)下(xia)工(gong)作(zuo)過(guo)程(cheng)不(bu)需(xu)要(yao)野(ye)生(sheng)幹(gan)預(yu),這(zhe)就(jiu)消(xiao)弭(mi)了(le)獨(du)霸(ba)者(zhe)酬(chou)勞(lao)孕(yun)育(yu)孕(yun)育(yu)發(fa)生(sheng)的(de)弊(bi)病(bing)。在(zai)解(jie)決(jue)打(da)造(zao)數(shu)控(kong)機(ji)床(chuang)時(shi),采(cai)取(qu)了(le)許(xu)多(duo)法(fa)度(du)模(mo)範(fan),使(shi)數(shu)控(kong)機(ji)床(chuang)的(de)機(ji)器(qi)一(yi)部(bu)分(fen)達(da)到(dao)了(le)較(jiao)高(gao)的(de)精(jing)度(du)和(he)剛(gang)度(du)。數(shu)控(kong)機(ji)床(chuang)工(gong)作(zuo)台(tai)的(de)移(yi)動(dong)當(dang)員(yuan)遍(bian)布(bu)達(da)到(dao)了(le)o.oo01一D,01妹妹,何況進給傳動鏈的反向間隙和絲杠螺距弊病等均可由數控裝置進行補償,低檔數控機床采用光柵尺進行工作台移動的閉環管製。單柱數控立式機床哪家好 數控立車加工精度由過去的t o.01咖提高到十0.005贓m乃至更病。定位精度20世紀90所代初中期己達到20.o02妹妹—十o.o05妹妹。其它.數控機床的傳動係統和機床結構都存在很高的剛度和熱固執性。經過補償技能.數控機床可得到比本人精度更高的加工精度。尤其提高了同—批整機生製造的一致性,製造品合格串高,加工品格固執.數控立車機床變動被加工整機時幾近不需要從新調停機床p虛(xu)耗(hao)了(le)整(zheng)機(ji)安(an)裝(zhuang)調(tiao)停(ting)工(gong)夫(fu)。數(shu)控(kong)機(ji)床(chuang)加(jia)工(gong)品(pin)格(ge)固(gu)執(zhi),一(yi)般(ban)隻(zhi)作(zuo)首(shou)件(jian)檢(jian)驗(yan)和(he)工(gong)序(xu)間(jian)關(guan)鍵(jian)尺(chi)寸(cun)的(de)抽(chou)樣(yang)檢(jian)驗(yan),因(yin)此(ci)虛(xu)耗(hao)了(le)停(ting)機(ji)檢(jian)驗(yan)工(gong)夫(fu)。在(zai)加(jia)工(gong)中(zhong)神(shen)思(si)床(chuang)上(shang)加(jia)工(gong)時(shi),一(yi)台(tai)機(ji)床(chuang)完(wan)成(cheng)了(le)多(duo)道(dao)工(gong)序(xu)的(de)連(lian)續(xu)加(jia)工(gong),生(sheng)製(zhi)造(zao)屈(qu)從(cong)的(de)提(ti)高(gao)更(geng)加(jia)顯(xian)著(zhu)。數(shu)控(kong)立(li)車(che)良(liang)好(hao)的(de)經(jing)濟(ji)效(xiao)益(yi)數(shu)控(kong)立(li)車(che)誠(cheng)然(ran)設(she)備(bei)卑(bei)賤(jian),加(jia)工(gong)時(shi)候(hou)攤(tan)到(dao)每(mei)一(yi)個(ge)整(zheng)機(ji)上(shang)的(de)設(she)備(bei)折(zhe)舊(jiu)費(fei)較(jiao)高(gao),但(dan)在(zai)單(dan)件(jian)、小批量生製造的環境下,應用數控機床加工可虛耗劃線工時,減少調停、jiagonghejianyangongfu,xuhaozhijieshengzhizaoxiyong。shukongjichuangjiagongzhengjiyibanbuxudazaozhuanyishiyongjiaju,xuhaolezuogongpeibeiyongdu。shukongjichuangjiagongjingduguzhi,jianshaolefeipinlv,shishengzhizaobenqianjinyibuxiajiang。qita,shukongjichuangkewanchengyijiduoyong,xuhaochangfangmianjihejianchangtouzi。yinciyingyongshukongjichuangkededaolianghaodejingjixiaoyi。wu、數控立車能完成複雜的運動 平凡機床難以完成或沒法完成軌跡為三次以上的曲線或曲麵的運動,如螺旋槳、汽輪機葉片之類的空間曲麵;而數控機床則可完成幾近是任意軌跡的運動相加工任何形狀的空間曲麵,實用於複雜異形整機的加工。

數控立式車床的選用原則和安裝方法 數控立式車床又稱為CNC車床,即計算機數字控製車床,是目前國內使用量最大,覆蓋麵最廣的一種數控機床,約占數控機床總數的25%。數控機床是集機械、電氣、液壓、氣動、微電子和信息等多項技術為一體的機電一體化產品。是機械製造設備中具有高精度、高效率、gaozidonghuahegaorouxinghuadengyoudiandegongzuomuji。shukongjichuangdejishushuipinggaodijiqizaijinshuqiexuejiagongjichuangchanlianghezongyongyouliangdebaifenbishihengliangyigeguojiaguominjingjifazhanhegongyezhizaozhengtishuipingdezhongyaobiaozhizhiyi。廊坊單柱數控立式機床數(shu)控(kong)立(li)式(shi)車(che)床(chuang)是(shi)數(shu)控(kong)機(ji)床(chuang)的(de)主(zhu)要(yao)品(pin)種(zhong)之(zhi)一(yi),它(ta)在(zai)數(shu)控(kong)機(ji)床(chuang)中(zhong)占(zhan)有(you)非(fei)常(chang)重(zhong)要(yao)的(de)位(wei)置(zhi),幾(ji)十(shi)年(nian)來(lai)一(yi)直(zhi)受(shou)到(dao)世(shi)界(jie)各(ge)國(guo)的(de)普(pu)遍(bian)重(zhong)視(shi)並(bing)得(de)到(dao)了(le)迅(xun)速(su)的(de)發(fa)展(zhan)。數(shu)控(kong)立(li)式(shi)車(che)床(chuang)、車削中心,是一種高精度、高效率的自動化機床。它具有廣泛的加工藝性能,可加工直線圓柱、斜線圓柱、圓弧和各種螺紋。具有直線插補、圓弧插補各種補償功能,並在複雜零件的批量生產中發揮了良好的經濟效果。合理選用數控立式車床,應遵循如下原則:選用原則。單柱數控立式機床哪家好前期準備確定典型零件的工藝要求、jiagonggongjiandepiliang,nidingshukonglishichechuangyingjuyoudegongnengshizuohaoqianqizhunbei,helixuanyongshukonglishichechuangdeqiantitiaojianmanzudianxinglingjiandegongyiyaoqiu。dianxinglingjiandegongyiyaoqiuzhuyaoshilingjiandejiegouchicun、加工範圍和精度要求。根據精度要求,即工件的尺寸精度、定ding位wei精jing度du和he表biao麵mian粗cu糙cao度du的de要yao求qiu來lai選xuan擇ze數shu控kong立li式shi車che床chuang的de控kong製zhi精jing度du。根gen據ju可ke靠kao性xing來lai選xuan擇ze,可ke靠kao性xing是shi提ti高gao產chan品pin質zhi量liang和he生sheng產chan效xiao率lv的de保bao證zheng。數shu控kong機ji床chuang的de可ke靠kao性xing是shi指zhi機ji床chuang在zai規gui定ding條tiao件jian下xia執zhi行xing其qi功gong能neng時shi,長chang時shi間jian穩wen定ding運yun行xing而er不bu出chu故gu障zhang。即ji平ping均jun無wu故gu障zhang時shi間jian長chang,即ji使shi出chu了le故gu障zhang,短duan時shi間jian內nei能neng恢hui複fu,重zhong新xin投tou入ru使shi用yong。選xuan擇ze結jie構gou合he理li、製造精良,並已批量生產的機床。一般,用戶越多,數控係統的可靠性越高。機床附件及刀具選購機床隨機附件、備件及其供應能力、刀具,對已投產數控立式車床、chexuezhongxinlaishuoshishifenzhongyaode。xuanzejichuang,xuzaixikaolvdaojuhefujiandepeitaoxing。zhuzhongkongzhixitongdetongyixingshengchanchangjiayibanxuanzetongyichangshangdechanpin,zhishaoyingxuangoutongyichangshangdekongzhixitong,zhegeiweixiugongzuodailaijidadebianli。jiaoxuedanwei,youyuxuyaoxueshengjianduoshiguang,xuanyongbutongdexitong,peibeigezhongfangzhenruanjianshimingzhidexuanze。genjuxingnengjiagebilaixuanzezuodaogongneng、精度不閑置、不浪費,不要選擇和自己需要無關的功能。機床的防護需要時,機床可配備全封閉或半封閉的防護裝置、自動排屑裝置。在選擇數控立式車床、chexuezhongxinshi,yingzonghekaolvshangshugexiangyuanze。anzhuangfangfaqidiaoheyunshujichuangdeqidiaohejiuwei,yingshiyongzhizaochangtigongdezhuanyongqidiaogongju,buyunxucaiyongqitafangfajinxing。buxuyaozhuanyongqidiaogongju,yingcaiyonggangsishenganzhaoshuomingshuguidingbuweiqidiaohejiuwei。jichujiweizhijichuangyinganzhuangzailaogudejichushang,weizhiyingyuanlizhenyuan;避免陽光照射和熱輻射;放(fang)置(zhi)在(zai)幹(gan)燥(zao)的(de)地(di)方(fang),避(bi)免(mian)潮(chao)濕(shi)和(he)氣(qi)流(liu)的(de)影(ying)響(xiang)。機(ji)床(chuang)附(fu)近(jin)若(ruo)有(you)振(zhen)源(yuan),在(zai)基(ji)礎(chu)四(si)周(zhou)必(bi)須(xu)設(she)置(zhi)防(fang)振(zhen)溝(gou)。通(tong)用(yong)刀(dao)架(jia)機(ji)床(chuang)的(de)安(an)裝(zhuang)機(ji)床(chuang)放(fang)置(zhi)於(yu)基(ji)礎(chu)上(shang),應(ying)在(zai)自(zi)由(you)狀(zhuang)態(tai)下(xia)找(zhao)平(ping),然(ran)後(hou)將(jiang)地(di)腳(jiao)螺(luo)栓(shuan)均(jun)勻(yun)地(di)鎖(suo)緊(jin)。對(dui)於(yu)普(pu)通(tong)機(ji)床(chuang),水(shui)平(ping)儀(yi)讀(du)數(shu)不(bu)超(chao)過(guo)0.04/1000mm,對於高精度的機床,水平儀不超過0.02/1000mm。在zai測ce量liang安an裝zhuang精jing度du時shi,應ying在zai恒heng定ding溫wen度du下xia進jin行xing,測ce量liang工gong具ju需xu經jing一yi段duan定ding溫wen時shi間jian後hou再zai使shi用yong。數shu控kong立li式shi車che床chuang安an裝zhuang時shi應ying竭jie力li避bi免mian使shi機ji床chuang產chan生sheng強qiang迫po變bian形xing的de安an裝zhuang方fang法fa。機ji床chuang安an裝zhuang時shi不bu應ying隨sui便bian拆chai下xia機ji床chuang的de某mou些xie部bu件jian,部bu件jian的de拆chai卸xie可ke能neng導dao致zhi機ji床chuang內nei應ying力li的de重zhong新xin分fen配pei,從cong而er影ying響xiang機ji床chuang精jing度du。試shi運yun轉zhuan前qian的de準zhun備bei數shu控kong立li式shi車che床chuang幾ji何he精jing度du檢jian驗yan合he格ge後hou,需xu要yao對dui整zheng機ji進jin行xing清qing理li。用yong浸jin有you清qing洗xi劑ji的de棉mian布bu或huo綢chou布bu,不bu得de用yong棉mian紗sha或huo紗sha布bu。清qing洗xi掉diao機ji床chuang出chu廠chang時shi為wei保bao護hu導dao軌gui麵mian和he加jia工gong麵mian而er塗tu的de防fang鏽xiu油you或huo防fang鏽xiu漆qi。清qing洗xi機ji床chuang外wai表biao麵mian上shang的de灰hui塵chen。在zai各ge滑hua動dong麵mian及ji工gong作zuo麵mian塗tu以yi機ji床chuang規gui定ding使shi滑hua油you。仔zai細xi檢jian查zha機ji床chuang各ge部bu位wei是shi否fou按an要yao求qiu加jia了le油you,冷leng卻que箱xiang中zhong是shi否fou加jia足zu冷leng卻que液ye。機ji床chuang液ye壓ya站zhan、zidongjianrunhuazhuangzhideyoushifoudaoyouweipishiqiguidingdebuwei。jianzhadianqikongzhixiangzhonggekaiguanjiyuanqijianshifouzhengchang,gechazhuangjichengdianlubanshifoudaowei。tongdianqidongjizhongrunhuazhuangxuan,shigerunhuabuweijirunhuayouluzhongchongmanrunhuayou。zuohaojichuanggebujiandongzuoqiandeyiqiezhunbei。

國內航空對數控機床的運營需求 在國內航空航天、船舶、汽車製造、發電設備製造等行業需要高檔數控機床來運營,國家相關政策明確規定“高檔數控機床與基礎製造裝備”科技重大專項要重點開發臥式加工中心等這類機床。同時要提高自己的自主研發精神,滿足國內機床的開發需求。專業單柱數控立式機床航空產品零件製造的複雜性主要體現:通常帶有複雜的理論外形曲麵、縱橫交錯的加強筋結構、厚度較小的薄壁結構等,不僅形狀複雜,而且孔、空穴、溝槽、加強筋等多,工藝剛性較差。現代飛機具有長壽命、高可靠性要求,這使零件表麵的質量控製要求更為嚴格;零件的尺寸精度和表麵質量要求越來越高。為了提高零件強度和工作可靠性,主要采用整體毛坯件和整體薄壁結構,結構複雜、材料去除量大、精度及表麵質量要求高,加工周期較長。零件的材料多為高強鋼、鋁合金、鈦合金、高(gao)溫(wen)合(he)金(jin)和(he)複(fu)合(he)材(cai)料(liao)等(deng)難(nan)加(jia)工(gong)材(cai)料(liao)。在(zai)航(hang)空(kong)工(gong)業(ye),需(xu)要(yao)先(xian)進(jin)的(de)機(ji)床(chuang)對(dui)設(she)備(bei)進(jin)行(xing)加(jia)工(gong),在(zai)航(hang)空(kong)行(xing)業(ye),在(zai)製(zhi)作(zuo)飛(fei)機(ji)等(deng)航(hang)天(tian)設(she)備(bei)的(de)過(guo)程(cheng)中(zhong)需(xu)要(yao)大(da)量(liang)采(cai)用(yong)整(zheng)體(ti)薄(bo)壁(bi)結(jie)構(gou),這(zhe)些(xie)結(jie)構(gou)比(bi)較(jiao)的(de)複(fu)雜(za),需(xu)要(yao)采(cai)用(yong)特(te)殊(shu)的(de)加(jia)工(gong)中(zhong)心(xin)進(jin)行(xing)完(wan)成(cheng)。同(tong)時(shi)在(zai)加(jia)工(gong)的(de)過(guo)程(cheng)中(zhong)對(dui)於(yu)龍(long)門(men)加(jia)工(gong)中(zhong)心(xin)、臥(wo)式(shi)加(jia)工(gong)中(zhong)心(xin)的(de)精(jing)度(du)需(xu)求(qiu)是(shi)比(bi)較(jiao)高(gao)的(de)。在(zai)航(hang)天(tian)產(chan)品(pin)的(de)加(jia)工(gong)過(guo)程(cheng)中(zhong),要(yao)求(qiu)機(ji)床(chuang)的(de)剛(gang)性(xing)要(yao)足(zu)夠(gou)的(de)好(hao),同(tong)時(shi)機(ji)床(chuang)的(de)人(ren)機(ji)界(jie)麵(mian)要(yao)簡(jian)潔(jie),這(zhe)樣(yang)便(bian)於(yu)操(cao)作(zuo)人(ren)員(yuan)的(de)操(cao)作(zuo)。機(ji)床(chuang)加(jia)工(gong)簡(jian)單(dan)也(ye)是(shi)必(bi)須(xu)要(yao)求(qiu)的(de),所(suo)以(yi)在(zai)整(zheng)個(ge)機(ji)床(chuang)的(de)加(jia)工(gong)過(guo)程(cheng)中(zhong)要(yao)考(kao)慮(lv)到(dao)這(zhe)些(xie)因(yin)素(su)。單柱數控立式機床哪家好對高速、高效數控設備的需求:對於薄壁零件,由於具有重量輕、節約材料、結構緊湊等特點,已在航空零部件中得到廣泛地應用。但薄壁零件由於剛性差、強(qiang)度(du)弱(ruo),在(zai)加(jia)工(gong)中(zhong)極(ji)容(rong)易(yi)變(bian)形(xing),使(shi)零(ling)件(jian)的(de)形(xing)位(wei)誤(wu)差(cha)增(zeng)大(da),不(bu)易(yi)保(bao)證(zheng)零(ling)件(jian)的(de)加(jia)工(gong)質(zhi)量(liang)。使(shi)用(yong)高(gao)速(su)數(shu)控(kong)切(qie)削(xue)設(she)備(bei)可(ke)以(yi)大(da)大(da)改(gai)善(shan)這(zhe)種(zhong)狀(zhuang)況(kuang),因(yin)為(wei)切(qie)削(xue)力(li)隨(sui)著(zhe)切(qie)削(xue)速(su)度(du)的(de)提(ti)高(gao)而(er)下(xia)降(jiang);切削產生的熱量絕大部分被切屑帶走;zaigaosuqiexuefanweineijichuangdejizhenpinlvyuanligongyixitongdeguyoupinlvfanwei,bingqiekeyijinliangjianshaojiagongzhongdejingxiangqiexueliherebianxingyishangtedianyouliyujianxiaogongjianbianxing,gaishanbobilingjiandejiagongjingduhebiaomianzhiliang。suoyizaiwanghouderizili,yongyuhangtianxingyedejichuangbaokuolongmenjiagongzhongxin、立式加工中心也同樣麵臨著機遇和挑戰,隻有不斷地自主創新才能夠更好地使用中國數控車床的市場。

單柱立式車 單柱立式車床簡介 修正 值得一提的是,單柱立式車床是專為鋼球設備的球板加工而規劃的,同時亦廣泛適用於各種盤狀零件的加工。 單柱立式車床的結構與特色 修正主變速箱選用液壓變速;工作台轉速由手動轉閥選定,通過電---液操縱完成; 垂直刀架,液壓體係備有保壓設備; 橫梁夾緊安排選用彈簧夾緊,液壓鬆開; 備稀有顯設備(需特別訂購*); 主變速箱及工作台主軸支撐及傳動主動光滑; 主傳動皮帶拉力、主軸軸承空隙、垂直滑枕螺母空隙及橫梁夾緊力均可調; 進給安排有保險設備; CJ5710定梁立車其橫梁固定無行程,不帶側刀架。專業單柱數控立式機床 單柱立式車床的技術標準 修正 產品型號 C518 C5110 CJ5710 工作台直徑(mm) 720 900 900 最大車削直徑×高度(mm) 1000×630 1000×800 1000×500 最大工件重量(kg) 1200 2000 2000 側刀架行程水平/垂直(mm) 500/650 500/650 垂直刀架行程水平/垂直 (mm) 580/650 680/650 680/500 刀架快速移動速度 (m/min) 1.8 1.8 1.8 主電機功率(kw) 22 22 22 主電機轉速(r/min) 1500 1500 外形尺寸(長×寬×高) (mm) 2560×2110×3050 2560×2110×3050 2210×2000×2605 主機重量 (kg) 6900 7200 5500 床屬車床的一種,即立車係列中全能型一般車床,適用於多種中小型環形件、殼體及法蘭等零件的外圓、外錐麵、內孔、內錐麵車削及鑽孔、擴孔、鏜孔等加工。數控立車操作時應留神的事項進入操作室必需穿合身的作業服、戴作業帽,襯衫要係入褲內,敞開式衣袖要紮緊,女同窗必需把長發歸入帽內。操作時禁止戴手套,作業服衣、領、袖xiu口kou要yao係xi好hao。發fa動dong數shu控kong立li車che前qian查zha看kan卡ka盤pan扳ban手shou能neng否fou取qu下xia,機ji床chuang變bian速su手shou柄bing能neng否fou在zai正zheng確que的de方fang位wei上shang。機ji床chuang各ge機ji構gou運yun轉zhuan時shi,不bu得de變bian換huan手shou柄bing。若ruo變bian換huan手shou柄bing方fang位wei,必bi需xu在zai停ting車che後hou間jian斷duan。抑yi止zhi用yong手shou或huo其qi它ta任ren何he方fang法fa觸chu摸mo正zheng在zai旋xuan轉zhuan的de主zhu軸zhou、工件或其它運動部分。抑止在主軸旋轉時間斷刀具的裝置與拆卸。單柱數控立式機床哪家好裝(zhuang)夾(jia)工(gong)件(jian)與(yu)調(tiao)整(zheng)刀(dao)具(ju)所(suo)用(yong)的(de)東(dong)西(xi)抑(yi)止(zhi)放(fang)在(zai)機(ji)床(chuang)導(dao)軌(gui)上(shang)。抑(yi)止(zhi)用(yong)手(shou)觸(chu)摸(mo)刀(dao)尖(jian)和(he)鐵(tie)屑(xie),要(yao)用(yong)毛(mao)刷(shua)與(yu)鉤(gou)子(zi)處(chu)置(zhi)。在(zai)主(zhu)動(dong)加(jia)工(gong)過(guo)程(cheng)中(zhong),抑(yi)止(zhi)翻(fan)開(kai)機(ji)床(chuang)防(fang)護(hu)門(men)。某(mou)一(yi)項(xiang)作(zuo)業(ye)如(ru)需(xu)求(qiu)兩(liang)人(ren)或(huo)多(duo)人(ren)完(wan)結(jie)時(shi),要(yao)互(hu)相(xiang)配(pei)合(he)好(hao),必(bi)需(xu)有(you)一(yi)人(ren)擔(dan)任(ren)安(an)全(quan),開(kai)車(che)前(qian)必(bi)需(xu)先(xian)打(da)招(zhao)呼(hu),防(fang)止(zhi)發(fa)作(zuo)事(shi)故(gu)