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氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)市場走向(xiang) 氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)發(fa)(fa)(fa)展(zhan)方(fang)向(xiang):更(geng)高的(de)(de)(de)(de)(de)(de)(de)安(an)全性(xing)和可(ke)(ke)(ke)(ke)靠性(xing)。從(cong)近幾(ji)(ji)年(nian)的(de)(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)技術(shu)標準(zhun)可(ke)(ke)(ke)(ke)知,標準(zhun)不僅(jin)(jin)提(ti)(ti)出了(le)(le)互換(huan)性(xing)要(yao)求(qiu),并(bing)且強調了(le)(le)安(an)全性(xing)。管接頭、氣(qi)(qi)(qi)(qi)(qi)(qi)源(yuan)處理(li)外(wai)(wai)殼等(deng)耐(nai)壓(ya)試(shi)驗(yan)的(de)(de)(de)(de)(de)(de)(de)壓(ya)力(li)提(ti)(ti)高到(dao)(dao)(dao)(dao)使(shi)用(yong)(yong)(yong)(yong)壓(ya)力(li)的(de)(de)(de)(de)(de)(de)(de)4~5倍(bei),耐(nai)壓(ya)時(shi)間增加(jia)到(dao)(dao)(dao)(dao)5~15min,還要(yao)在(zai)高、低(di)溫度(du)(du)下進(jin)行(xing)(xing)試(shi)驗(yan)。如果貫徹(che)這些(xie)標準(zhun),國(guo)(guo)內的(de)(de)(de)(de)(de)(de)(de)缸筒(tong)、端蓋、氣(qi)(qi)(qi)(qi)(qi)(qi)源(yuan)處理(li)鑄件(jian)(jian)(jian)(jian)和管接頭等(deng)都難達(da)(da)到(dao)(dao)(dao)(dao)標準(zhun)要(yao)求(qiu)。除耐(nai)壓(ya)試(shi)驗(yan)處,結(jie)構上(shang)也作了(le)(le)某(mou)些(xie)規定(ding)(ding),如氣(qi)(qi)(qi)(qi)(qi)(qi)源(yuan)處理(li)的(de)(de)(de)(de)(de)(de)(de)透明殼外(wai)(wai)部規定(ding)(ding)要(yao)加(jia)金屬(shu)防護罩。氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)技術(shu)應(ying)用(yong)(yong)(yong)(yong)面(mian)的(de)(de)(de)(de)(de)(de)(de)擴大(da)(da)(da)是(shi)(shi)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)工(gong)(gong)(gong)業(ye)(ye)發(fa)(fa)(fa)展(zhan)的(de)(de)(de)(de)(de)(de)(de)標志:氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)應(ying)用(yong)(yong)(yong)(yong)主(zhu)(zhu)要(yao)為兩個方(fang)面(mian):維(wei)修和配套(tao)。過(guo)去(qu)國(guo)(guo)產(chan)(chan)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)銷(xiao)售要(yao)用(yong)(yong)(yong)(yong)于(yu)維(wei)修,近幾(ji)(ji)年(nian),直接為主(zhu)(zhu)要(yao)配套(tao)的(de)(de)(de)(de)(de)(de)(de)銷(xiao)售份額逐年(nian)增加(jia)。國(guo)(guo)產(chan)(chan)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)應(ying)用(yong)(yong)(yong)(yong),從(cong)價值(zhi)數千萬元(yuan)(yuan)(yuan)(yuan)的(de)(de)(de)(de)(de)(de)(de)冶(ye)金設(she)備到(dao)(dao)(dao)(dao)只有(you)(you)(you)(you)1~2百元(yuan)(yuan)(yuan)(yuan)的(de)(de)(de)(de)(de)(de)(de)椅子。鐵道扳岔(cha)、機車(che)輪(lun)軌潤滑、列(lie)車(che)的(de)(de)(de)(de)(de)(de)(de)煞車(che)、街(jie)道清掃、特種(zhong)車(che)間內的(de)(de)(de)(de)(de)(de)(de)起吊設(she)備、軍事(shi)指揮車(che)等(deng)都用(yong)(yong)(yong)(yong)上(shang)了(le)(le)專門開(kai)發(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)(de)國(guo)(guo)產(chan)(chan)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)。這說明氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)技術(shu)已“滲(shen)透”到(dao)(dao)(dao)(dao)各(ge)行(xing)(xing)各(ge)業(ye)(ye),并(bing)且正在(zai)日(ri)(ri)(ri)益(yi)(yi)擴大(da)(da)(da)。氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)發(fa)(fa)(fa)展(zhan)出智能(neng)化(hua)。帶(dai)(dai)開(kai)關的(de)(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)(qi)缸國(guo)(guo)內已普遍使(shi)用(yong)(yong)(yong)(yong),開(kai)關體(ti)(ti)積(ji)將更(geng)小(xiao),性(xing)能(neng)更(geng)高,可(ke)(ke)(ke)(ke)嵌入氣(qi)(qi)(qi)(qi)(qi)(qi)缸缸體(ti)(ti);有(you)(you)(you)(you)些(xie)還帶(dai)(dai)雙色顯示,可(ke)(ke)(ke)(ke)顯示出位(wei)置(zhi)誤差,使(shi)系統(tong)更(geng)可(ke)(ke)(ke)(ke)靠。用(yong)(yong)(yong)(yong)傳(chuan)感器代替(ti)流(liu)量計、壓(ya)力(li)表、能(neng)自(zi)動(dong)(dong)(dong)(dong)(dong)控(kong)制(zhi)壓(ya)縮空氣(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)流(liu)量、壓(ya)力(li),可(ke)(ke)(ke)(ke)以節能(neng)并(bing)保證使(shi)用(yong)(yong)(yong)(yong)裝置(zhi)正常運行(xing)(xing)。氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)伺服定(ding)(ding)位(wei)系統(tong)已有(you)(you)(you)(you)產(chan)(chan)品(pin)進(jin)入市場。該(gai)系統(tong)采(cai)用(yong)(yong)(yong)(yong)三位(wei)五通(tong)(tong)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)伺服閥(fa)(fa)(fa),將預定(ding)(ding)的(de)(de)(de)(de)(de)(de)(de)定(ding)(ding)位(wei)目標與(yu)位(wei)置(zhi)傳(chuan)感器的(de)(de)(de)(de)(de)(de)(de)檢測數據(ju)進(jin)行(xing)(xing)比(bi)較,實施負(fu)反饋控(kong)制(zhi)。氣(qi)(qi)(qi)(qi)(qi)(qi)缸zui大(da)(da)(da)速度(du)(du)達(da)(da)2m/s、行(xing)(xing)程(cheng)300mm時(shi),系統(tong)定(ding)(ding)位(wei)精度(du)(du)±0.1mm。日(ri)(ri)(ri)本(ben)(ben)試(shi)制(zhi)成功一種(zhong)新(xin)型智能(neng)電(dian)(dian)(dian)磁(ci)閥(fa)(fa)(fa),這種(zhong)閥(fa)(fa)(fa)配帶(dai)(dai)有(you)(you)(you)(you)傳(chuan)感器的(de)(de)(de)(de)(de)(de)(de)邏(luo)輯(ji)回路,是(shi)(shi)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)與(yu)光電(dian)(dian)(dian)子技術(shu)結(jie)合的(de)(de)(de)(de)(de)(de)(de)產(chan)(chan)物(wu)(wu)。它(ta)能(neng)直接接受傳(chuan)感器的(de)(de)(de)(de)(de)(de)(de)信號,當信號滿足(zu)條(tiao)件(jian)(jian)(jian)(jian)時(shi),不必通(tong)(tong)過(guo)外(wai)(wai)部控(kong)制(zhi)器,即可(ke)(ke)(ke)(ke)自(zi)行(xing)(xing)完(wan)成動(dong)(dong)(dong)(dong)(dong)作,達(da)(da)到(dao)(dao)(dao)(dao)控(kong)制(zhi)目的(de)(de)(de)(de)(de)(de)(de)。它(ta)已經應(ying)用(yong)(yong)(yong)(yong)在(zai)物(wu)(wu)體(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)傳(chuan)送帶(dai)(dai)上(shang),能(neng)識別搬運物(wu)(wu)體(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)大(da)(da)(da)小(xiao),使(shi)大(da)(da)(da)件(jian)(jian)(jian)(jian)直接下送,小(xiao)件(jian)(jian)(jian)(jian)分(fen)流(liu)。我(wo)國(guo)(guo)的(de)(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)工(gong)(gong)(gong)業(ye)(ye)雖然達(da)(da)到(dao)(dao)(dao)(dao)了(le)(le)一定(ding)(ding)規模與(yu)技術(shu)水(shui)(shui)平,但(dan)是(shi)(shi)與(yu)先進(jin)水(shui)(shui)平相(xiang)比(bi),差距(ju)甚(shen)大(da)(da)(da)。我(wo)國(guo)(guo)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)產(chan)(chan)品(pin)產(chan)(chan)值(zhi)只占世界總產(chan)(chan)值(zhi)的(de)(de)(de)(de)(de)(de)(de)1.3%,僅(jin)(jin)為美國(guo)(guo)的(de)(de)(de)(de)(de)(de)(de)1/21,日(ri)(ri)(ri)本(ben)(ben)的(de)(de)(de)(de)(de)(de)(de)1/15,德國(guo)(guo)的(de)(de)(de)(de)(de)(de)(de)1/8。這與(yu)10多億人(ren)口的(de)(de)(de)(de)(de)(de)(de)大(da)(da)(da)國(guo)(guo)很不相(xiang)稱。氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)從(cong)品(pin)種(zhong)上(shang)看,日(ri)(ri)(ri)本(ben)(ben)一家公司有(you)(you)(you)(you)6500個品(pin)種(zhong),我(wo)國(guo)(guo)只有(you)(you)(you)(you)它(ta)的(de)(de)(de)(de)(de)(de)(de)1/5。產(chan)(chan)品(pin)性(xing)能(neng)和質量水(shui)(shui)平的(de)(de)(de)(de)(de)(de)(de)差距(ju)也很大(da)(da)(da)。 由于(yu)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)技術(shu)越(yue)來越(yue)多地(di)應(ying)用(yong)(yong)(yong)(yong)于(yu)各(ge)行(xing)(xing)業(ye)(ye)的(de)(de)(de)(de)(de)(de)(de)自(zi)動(dong)(dong)(dong)(dong)(dong)裝配和自(zi)動(dong)(dong)(dong)(dong)(dong)加(jia)工(gong)(gong)(gong)小(xiao)件(jian)(jian)(jian)(jian)、特殊物(wu)(wu)品(pin)的(de)(de)(de)(de)(de)(de)(de)設(she)備上(shang),原有(you)(you)(you)(you)傳(chuan)統(tong)的(de)(de)(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)性(xing)能(neng)正在(zai)不斷提(ti)(ti)高,同(tong)時(shi)陸續開(kai)發(fa)(fa)(fa)出適應(ying)市場要(yao)求(qiu)的(de)(de)(de)(de)(de)(de)(de)新(xin)產(chan)(chan)品(pin),使(shi)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)品(pin)種(zhong)日(ri)(ri)(ri)益(yi)(yi)增加(jia),其發(fa)(fa)(fa)展(zhan)趨勢(shi)主(zhu)(zhu)要(yao)有(you)(you)(you)(you)以下幾(ji)(ji)個方(fang)面(mian): 體(ti)(ti)積(ji)更(geng)小(xiao),重量更(geng)輕,功耗更(geng)低(di).在(zai)電(dian)(dian)(dian)子元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)、藥品(pin)等(deng)制(zhi)造行(xing)(xing)業(ye)(ye)中,由于(yu)被加(jia)工(gong)(gong)(gong)件(jian)(jian)(jian)(jian)體(ti)(ti)積(ji)很小(xiao),勢(shi)必限制(zhi)了(le)(le)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)尺(chi)寸,小(xiao)型化(hua)、輕型化(hua)是(shi)(shi)氣(qi)(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)*個發(fa)(fa)(fa)展(zhan)方(fang)向(xiang)。國(guo)(guo)外(wai)(wai)已開(kai)發(fa)(fa)(fa)了(le)(le)僅(jin)(jin)大(da)(da)(da)拇指大(da)(da)(da)小(xiao)、有(you)(you)(you)(you)效(xiao)截面(mian)積(ji)為0.2mm2的(de)(de)(de)(de)(de)(de)(de)超小(xiao)型電(dian)(dian)(dian)磁(ci)閥(fa)(fa)(fa)。能(neng)開(kai)發(fa)(fa)(fa)出外(wai)(wai)形(xing)尺(chi)寸小(xiao)而流(liu)量較大(da)(da)(da)的(de)(de)(de)(de)(de)(de)(de)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)更(geng)為理(li)想。為此,相(xiang)同(tong)外(wai)(wai)形(xing)尺(chi)寸的(de)(de)(de)(de)(de)(de)(de)閥(fa)(fa)(fa),流(liu)量已提(ti)(ti)高2~3.3倍(bei)。有(you)(you)(you)(you)一種(zhong)系列(lie)的(de)(de)(de)(de)(de)(de)(de)小(xiao)型電(dian)(dian)(dian)磁(ci)閥(fa)(fa)(fa),其閥(fa)(fa)(fa)體(ti)(ti)寬(kuan)僅(jin)(jin)10mm,有(you)(you)(you)(you)效(xiao)面(mian)積(ji)可(ke)(ke)(ke)(ke)達(da)(da)5mm2;寬(kuan)15mm,有(you)(you)(you)(you)效(xiao)面(mian)積(ji)達(da)(da)10mm2等(deng)。
氣缸(gang)擅長作往復直線運動(dong),尤(you)其(qi)(qi)適于(yu)工(gong)業(ye)自動(dong)化中zui多的(de)(de)(de)傳送要求——工(gong)件的(de)(de)(de)直線搬運。而且,僅僅調節安裝在氣缸(gang)兩側的(de)(de)(de)單向節流閥就可(ke)簡單地實現穩定(ding)的(de)(de)(de)速度控制,也成為氣缸(gang)驅動(dong)系(xi)統zui大的(de)(de)(de)特征和(he)優勢。所(suo)以對(dui)于(yu)沒有多點定(ding)位(wei)要求的(de)(de)(de)用(yong)戶,絕大多數從使(shi)用(yong)便(bian)利性角(jiao)度更傾(qing)向于(yu)使(shi)用(yong)氣缸(gang)。目前工(gong)業(ye)現場使(shi)用(yong)電動(dong)執行器的(de)(de)(de)應用(yong)大部(bu)分都是(shi)(shi)要求高(gao)精度多點定(ding)位(wei),這是(shi)(shi)由于(yu)用(yong)氣缸(gang)難(nan)以實現,退(tui)而求其(qi)(qi)次(ci)的(de)(de)(de)結果。
而電動(dong)執行(xing)器主要用(yong)于(yu)旋轉與擺動(dong)工況。其優勢在于(yu)響應時間(jian)快(kuai),通過(guo)(guo)反饋系統(tong)對(dui)速度、位置及力(li)矩(ju)進行(xing)控制。但(dan)當需要完成直線運動(dong)時,需要通過(guo)(guo)齒(chi)形帶或絲桿(gan)等機(ji)械裝置進行(xing)傳動(dong)轉化,因此(ci)結構相對(dui)較為復雜,而且對(dui)工作(zuo)環境及操作(zuo)維(wei)護(hu)人員的專業知識都有較高要求。
優勢
(1)對使(shi)用者(zhe)的要求較低。氣缸的原理(li)及結構簡單,易于安裝(zhuang)維(wei)護,對于使(shi)用者(zhe)的要求不高(gao)。電(dian)缸則不同,工(gong)程(cheng)人員必(bi)需具備一定的電(dian)氣知識,否則極有可能(neng)因為誤操作而(er)使(shi)之損壞。
(2)輸(shu)出(chu)力(li)(li)大。氣(qi)缸(gang)(gang)(gang)的(de)輸(shu)出(chu)力(li)(li)與缸(gang)(gang)(gang)徑(jing)(jing)的(de)平方成正比;而(er)電(dian)缸(gang)(gang)(gang)的(de)輸(shu)出(chu)力(li)(li)與三個(ge)因素有(you)關,缸(gang)(gang)(gang)徑(jing)(jing)、電(dian)機的(de)功(gong)率(lv)和(he)絲桿的(de)螺(luo)距,缸(gang)(gang)(gang)徑(jing)(jing)及功(gong)率(lv)越大、螺(luo)距越小(xiao)則輸(shu)出(chu)力(li)(li)越大。一個(ge)缸(gang)(gang)(gang)徑(jing)(jing)為50mm的(de)氣(qi)缸(gang)(gang)(gang),理論(lun)上(shang)的(de)輸(shu)出(chu)力(li)(li)可達2000N,對(dui)于同(tong)樣缸(gang)(gang)(gang)徑(jing)(jing)的(de)電(dian)缸(gang)(gang)(gang),雖然不(bu)同(tong)公司的(de)產品各有(you)差(cha)異,但是基本上(shang)都(dou)不(bu)超過1000N。顯而(er)易見,在輸(shu)出(chu)力(li)(li)方面氣(qi)缸(gang)(gang)(gang)更具優勢。
日本SMC氣缸(gang)與普通的(de)氣缸(gang)zui大(da)較差點在(zai)什么(me)部分,日本SMC氣缸(gang)
(3)適應性強。氣缸(gang)能(neng)夠(gou)在高溫和低(di)溫環境中正常工(gong)作(zuo)且(qie)具有防塵、防水能(neng)力,可適應各(ge)種惡劣的環境。而(er)電缸(gang)由于具有大量電氣部件的緣故,對(dui)環境的要求(qiu)較(jiao)高,適應性較(jiao)差。
電(dian)缸的優勢(shi)主要體現(xian)在以(yi)下(xia)3個方(fang)面:
(1)系統(tong)構成非常(chang)簡單。由于電機通常(chang)與缸體集成在一起,再加(jia)上控制器與電纜,電缸的整個系統(tong)就是由這三部分組成的,簡單而緊湊。
(2)停止的(de)位(wei)(wei)(wei)置數(shu)多(duo)且控制(zhi)精度高。一般(ban)電缸有(you)低(di)端(duan)(duan)與之分,低(di)端(duan)(duan)產品的(de)停止位(wei)(wei)(wei)置有(you)3、5、16、64個等,根據公(gong)司不同而有(you)所(suo)(suo)變化;產品則更是可(ke)以達到幾百甚(shen)至上千個位(wei)(wei)(wei)置。在精度方面,電缸也具有(you)的(de)優勢,定(ding)位(wei)(wei)(wei)精度可(ke)達¡0.05mm,所(suo)(suo)以常(chang)(chang)常(chang)(chang)應(ying)用于電子、半(ban)導體(ti)等精密的(de)行業。
(3)柔(rou)(rou)韌性強(qiang)。毫無疑問,電缸的(de)柔(rou)(rou)韌性遠遠強(qiang)于(yu)氣(qi)(qi)缸。由(you)于(yu)控制(zhi)器可以與PLC直接進行連接,對(dui)電機(ji)的(de)轉速、定位和正反轉都(dou)能(neng)夠實現控制(zhi),在一定程度上,電缸可以根據需要(yao)隨意進行運(yun)動;由(you)于(yu)氣(qi)(qi)體的(de)可壓縮性和運(yun)動時(shi)產生的(de)慣性,即使換向閥與磁性開關(guan)之(zhi)間(jian)配合地再好(hao)也(ye)(ye)不能(neng)做到(dao)氣(qi)(qi)缸的(de)準確定位,柔(rou)(rou)韌性也(ye)(ye)就無從談起了。
在(zai)技術性能(neng)方面(mian),本(ben)人(ren)認為電動和氣(qi)動各(ge)有所長,首先電動執行器的優勢(shi)主要包括:
(1)結構緊湊,體(ti)積小巧。比(bi)起氣(qi)動(dong)執(zhi)行(xing)器(qi),電(dian)動(dong)執(zhi)行(xing)器(qi)結構相對(dui)簡單,一個(ge)基本的電(dian)子(zi)系統包括執(zhi)行(xing)器(qi),三位置DPDT開關、熔斷器(qi)和一些電(dian)線(xian),易(yi)于裝配(pei)。
(2)電(dian)動(dong)執行器(qi)的驅動(dong)源(yuan)很靈活(huo),一般車載(zai)電(dian)源(yuan)即(ji)可(ke)滿足需(xu)要(yao),而氣(qi)動(dong)執行器(qi)需(xu)要(yao)氣(qi)源(yuan)和壓縮驅動(dong)裝置(zhi)。
(3)電動執行(xing)器沒有“漏氣”的危險,可靠(kao)性高,而空氣的可壓縮性使得氣動執行(xing)器的穩定性稍差。
日本(ben)SMC氣缸(gang)與普通的氣缸(gang)zui大(da)較差點在(zai)什么部分,日本(ben)SMC氣缸(gang)
(4)不需要對各(ge)種氣動管線(xian)進(jin)行安裝和維護。
(5)可以無需(xu)動力即保持負載(zai),而氣動執行器(qi)需(xu)要持續不斷的壓力供給(gei)。
(6)由于(yu)不需要額外的壓力(li)裝(zhuang)置(zhi),電動執(zhi)行(xing)器更加安靜。通常,如果氣動執(zhi)行(xing)器在(zai)大負(fu)載的情況下(xia),要加裝(zhuang)消音器。
(7)電動執行(xing)器(qi)在(zai)控制(zhi)的精(jing)度方面更勝*。
(8)氣動裝置中的(de)(de)通(tong)常需要把電信(xin)號轉化為氣信(xin)號,然后再轉化為電信(xin)號,傳(chuan)遞(di)速度(du)較慢,不宜用于元件級數過多的(de)(de)復雜回(hui)路。
而氣缸(gang)的優勢(shi)則在于(yu)以下4個方面:
(1)負載大,可以適應高力矩輸出的應用(不(bu)過,現(xian)在的電動(dong)執行器已經逐漸達(da)到目前的氣動(dong)負載水(shui)平了)。
(2)動作迅速、反應快。
(3)工作(zuo)環境適應性(xing)好,特別在易燃、易爆、多塵埃、強磁、輻射和振動等惡劣(lie)工作(zuo)環境中,比液壓(ya)、電(dian)子(zi)、電(dian)氣控制(zhi)更*。
(4)行(xing)程受阻或閥桿被扎住時電機容易受損。
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