南京澤登機(jī)電專業(yè)代理SMC氣缸/油缸
:張  慧
傳真:
:381045766  公司:http://www.njzdjd.com
SMC氣缸種類:氣壓傳動(dòng)中將壓縮氣體的壓力能轉(zhuǎn)換為機(jī)械能的氣動(dòng)執(zhí)行元件。氣缸有作往復(fù)直線運(yùn)動(dòng)的和作往復(fù)擺動(dòng)的兩類（見圖）。作往復(fù)直線運(yùn)動(dòng)的氣缸又可分為單作用、雙作用、膜片式和沖擊氣缸 4種。 　?、賳巫饔脷飧祝簝H一端有活塞桿，從活塞一側(cè)供氣聚能產(chǎn)生氣壓，氣壓推動(dòng)活塞產(chǎn)生推力伸出，靠彈簧或自重返回。 　?、陔p作用氣缸：從活塞兩側(cè)交替供氣，在一個(gè)或兩個(gè)方向輸出力。 　?、勰て綒飧祝河媚て婊钊辉谝粋€(gè)方向輸出力，用彈簧復(fù)位。它的密封性能好，但行程短。 　?、軟_擊氣缸：這是一種新型元件。它把壓縮氣體的壓力能轉(zhuǎn)換為活塞高速（10～20米/秒）運(yùn)動(dòng)的動(dòng)能，借以作功。沖擊氣缸增加了帶有噴口和泄流口的中蓋。中蓋和活塞把氣缸分成儲(chǔ)氣腔、頭腔和尾腔三室。它廣泛用于下料、沖孔、破碎和成型等多種作業(yè)。作往復(fù)擺動(dòng)的氣缸稱擺動(dòng)氣缸，由葉片將內(nèi)腔分隔為二，向兩腔交替供氣，輸出軸作擺動(dòng)運(yùn)動(dòng)，擺動(dòng)角小于 280°。此外，還有回轉(zhuǎn)氣缸、氣液阻尼缸和步進(jìn)氣缸等。
SMC氣缸結(jié)構(gòu):氣缸是由缸筒、端蓋、活塞、活塞桿和密封件組成，其內(nèi)部結(jié)構(gòu)如圖所示： SMC氣缸原理圖 　　1）缸筒 缸筒的內(nèi)徑大小代表了氣缸輸出力的大小。活塞要在缸筒內(nèi)做平穩(wěn)的往復(fù)滑動(dòng)，缸筒內(nèi)表面的表面粗糙度應(yīng)達(dá)到Ra0.8um。對(duì)鋼管缸筒，內(nèi)表面還應(yīng)鍍硬鉻，以減小摩擦阻力和磨損，并能防止銹蝕。缸筒材質(zhì)除使用高碳鋼管外，還是用高強(qiáng)度鋁合金和黃銅。小型氣缸有使用不銹鋼管的。帶磁性開關(guān)的氣缸或在耐腐蝕環(huán)境中使用的氣缸，缸筒應(yīng)使用不銹鋼、鋁合金或黃銅等材質(zhì)。 SMC CM2氣缸活塞上采用組合密封圈實(shí)現(xiàn)雙向密封，活塞與活塞桿用壓鉚鏈接，不用螺母。 2）端蓋 端蓋上設(shè)有進(jìn)排氣通口，有的還在端蓋內(nèi)設(shè)有緩沖機(jī)構(gòu)。桿側(cè)端蓋上設(shè)有密封圈和防塵圈，以防止從活塞桿處向外漏氣和防止外部灰塵混入缸內(nèi)。桿側(cè)端蓋上設(shè)有導(dǎo)向套，以提高氣缸的導(dǎo)向精度，承受活塞桿上少量的橫向負(fù)載，減小活塞桿伸出時(shí)的下彎量，延長(zhǎng)氣缸使用壽命。導(dǎo)向套通常使用燒結(jié)含油合金、前傾銅鑄件。端蓋過(guò)去常用可鍛鑄鐵，現(xiàn)在為減輕重量并防銹，常使用鋁合金壓鑄，微型缸有使用黃銅材料的。
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