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陜西欣鴻然自動(dòng)化設(shè)備有限公司

v?聯(lián)系人:寧輝

v?熱??線：029-83338940

v?手?機(jī)：18049484083??

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v?傳真:029-83561013??

行程開(kāi)關(guān)就是一般所說(shuō)的限位開(kāi)關(guān)?？梢岳斫鉃槭且唤M接通或斷開(kāi)的簡(jiǎn)單電路。
“用來(lái)檢測(cè)物體是否移動(dòng)到限定的位置”，例如，機(jī)床的移動(dòng)工作臺(tái)上裝撞塊，相對(duì)不動(dòng)的床身上裝行程開(kāi)關(guān)，當(dāng)機(jī)床工作臺(tái)移動(dòng)預(yù)先設(shè)定的距離后，工作臺(tái)上的撞塊壓動(dòng)床身上安裝的行程開(kāi)關(guān)，行程開(kāi)關(guān)斷開(kāi)或接通，就有電信號(hào)反應(yīng)到控制柜中，工作臺(tái)停止移動(dòng)或反向移動(dòng)。
“原理是當(dāng)物體碰觸到限位開(kāi)關(guān)，開(kāi)關(guān)的常開(kāi)點(diǎn)閉合，常閉點(diǎn)斷開(kāi)，用來(lái)控制電路或接受信號(hào)”
常開(kāi)與常閉是開(kāi)關(guān)的兩種原始狀態(tài)，常開(kāi)型一般指沒(méi)有壓下的狀態(tài)電路是開(kāi)通的，常閉型一般指沒(méi)有壓下的狀態(tài)電路是斷開(kāi)的。根據(jù)需要來(lái)進(jìn)行選擇，開(kāi)關(guān)的常開(kāi)點(diǎn)斷開(kāi)或常閉點(diǎn)閉合。
如撞塊壓下行程開(kāi)關(guān)常開(kāi)點(diǎn)斷開(kāi)（斷開(kāi)電路）或常閉點(diǎn)閉合（接通電路）

常開(kāi)接點(diǎn)：在不受外力（包括電力）的作用下，開(kāi)關(guān)斷開(kāi)的，就是常開(kāi)接點(diǎn)。
物體碰觸到限位開(kāi)關(guān)，開(kāi)關(guān)的常開(kāi)點(diǎn)閉合，常閉點(diǎn)斷開(kāi)，用來(lái)控制電路或接受信號(hào)。物體可以是任何機(jī)械裝置。行程開(kāi)關(guān)與繼電器是不同的“開(kāi)關(guān)”繼電器是有電磁線圈的，行程開(kāi)關(guān)是沒(méi)有的，內(nèi)部只有開(kāi)關(guān)接點(diǎn)，需要外力的作用才使開(kāi)關(guān)轉(zhuǎn)換狀態(tài)。

限位開(kāi)關(guān)的應(yīng)用方面很多，很多電器里面都有它的身影。那這么簡(jiǎn)單的開(kāi)關(guān)能起什么作用呢？它主要是起連鎖保護(hù)的作用。最常見(jiàn)的例子莫過(guò)于其在洗衣機(jī)和錄音機(jī)（錄像機(jī)）中的應(yīng)用了。

Limit?switch?is?mainly?used?for?the?mechanical?displacement?into?an?electrical?signal,?the?motor?running?state?can?be?changed,?so?as?to?control?mechanical?action?or?to?be?used?in?process?control.

Position?switch?real?handy?limit?is?in?industry,?where?it?and?other?equipment,?composed?of?more?complex?automation?equipment.

Machine?tools?have?many?such?limit?switch,?it?is?used?to?control?the?movement?of?the?workpiece?or?automatic?feed?stroke,?to?avoid?collision.?Sometimes?use?the?limit?switch?makes?the?controlled?objects?between?the?provisions?of?the?two?position?automatic?reversing,?so?as?to?obtain?the?continuous?reciprocating?motion.?Such?as?auto?transport?material?car?reaches?the?finishing?touch?limit?switch,?to?connect?to?the?dumper?body,?put?an?overturned?car?material,?and?return?to?the?starting?point.?Arrive?at?the?starting?point?after?the?starting?point?of?the?touch?switch,?the?circuit?charging?mechanism,?start?automatic?loading.?Always?go?on?like?this,?it?becomes?a?set?of?automatic?production?line,?need?not?tube,?working?day?and?night,?save?the?manual?labor.

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