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SNS快速排氣閥 VQE-01 QE-01 QE-02 QE-03 QE-04

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氣缸是將壓縮空氣的壓力能轉(zhuǎn)化為機(jī)械能的一種執(zhí)行元件，使驅(qū)動(dòng)機(jī)構(gòu)作直線往復(fù)運(yùn)動(dòng)，擺動(dòng)和旋轉(zhuǎn)運(yùn)動(dòng)。
　　一、氣缸的選擇
1、缸的操作方式分為雙動(dòng)和單動(dòng)（彈簧壓出、彈簧壓回）兩種
2、按氣缸的功能分為標(biāo)準(zhǔn)型、小型、薄型、雙軸型等
3、按氣缸的缸體材料分為鋁合金和不銹鋼兩種
(一）如何選擇氣缸
1、缸徑的選擇
　　氣缸缸徑的主要決定因素為氣缸的負(fù)載重量、氣源的供氣壓力和作動(dòng)方向，根據(jù)上述的使用條件，在對(duì)照下面的氣缸出力表來(lái)確定氣缸的缸境。
　　推力F1=A1×P1×β
　　拉力F2=A2×P2×β
F1：氣缸前進(jìn)推力（kg）F2：氣缸后推拉力（kg）
A1：推側(cè)活塞受壓面積（cm2）= πD2=0.785D2
A2：拉側(cè)活塞受壓面積（cm2）= π（D2-d2）=0.785（D2-d2）
P：動(dòng)作壓力（kgf/cm2）（值取5~6kgf/cm2）
D：氣缸缸徑（cm2）d：活塞桿直徑（cm2）
β：負(fù)荷率
注：
1.靜止?fàn)顟B(tài)時(shí)β=80%出力以下2.通常使用（低速時(shí)）β=65%以下3.高速作動(dòng)時(shí)β=50%以下氣缸理論出力表(kgf)
2、行程的選擇
　　氣缸行程的選定是將超過(guò)工作移動(dòng)距離的最小標(biāo)準(zhǔn)行程作為行程確定的依據(jù)，特殊行程仍可接受客戶預(yù)定。
3、安裝方式、緩沖、磁性開(kāi)關(guān)的選擇
　　不同系列氣缸有不同的安裝方式，而各系列又有多種的安裝方式可供選擇，應(yīng)根據(jù)氣缸的不同用途來(lái)選擇。
　　按照氣缸的用途需要來(lái)選擇氣缸的緩沖方式。
　　磁性開(kāi)關(guān)的安裝用來(lái)感測(cè)氣缸的運(yùn)動(dòng)位置，但氣缸內(nèi)置磁環(huán)是使用磁性開(kāi)關(guān)的先決條件。
4、氣缸選擇的注意點(diǎn)：
　　要選擇質(zhì)量穩(wěn)定，價(jià)廉物美的氣缸并不難，主要從氣缸的內(nèi)部結(jié)構(gòu)，材質(zhì)的選用上入手。
　　缸筒；鋁合金硬質(zhì)陽(yáng)極處理，內(nèi)壁必研磨光滑
　　活塞桿：選用優(yōu)質(zhì)中碳鋼45#40cr,經(jīng)冷拉精拔，粗精無(wú)心磨削，鍍鉻和精細(xì)拋光等多道工序加工而成，表面粗糙度Ra0.8-1.5(1000mm-15000mm),硬度HB220-260，直線度0.15/1000mm,圓度0.01mm,鍍鉻厚度0.02-0.05 mm

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