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陜西欣鴻然自動化設(shè)備有限公司

v?聯(lián)系人:寧輝

v?熱??線：029-83338940

v?手?機：18049484083??

v?Q?Q:271968858????Q?Q:1067802570????????

v?傳真:029-83561013??

行程開關(guān)就是一般所說的限位開關(guān)。可以理解為是一組接通或斷開的簡單電路。
“用來檢測物體是否移動到限定的位置”，例如，機床的移動工作臺上裝撞塊，相對不動的床身上裝行程開關(guān)，當機床工作臺移動預(yù)先設(shè)定的距離后，工作臺上的撞塊壓動床身上安裝的行程開關(guān)，行程開關(guān)斷開或接通，就有電信號反應(yīng)到控制柜中，工作臺停止移動或反向移動。
“原理是當物體碰觸到限位開關(guān)，開關(guān)的常開點閉合，常閉點斷開，用來控制電路或接受信號”
常開與常閉是開關(guān)的兩種原始狀態(tài)，常開型一般指沒有壓下的狀態(tài)電路是開通的，常閉型一般指沒有壓下的狀態(tài)電路是斷開的。根據(jù)需要來進行選擇，開關(guān)的常開點斷開或常閉點閉合。
如撞塊壓下行程開關(guān)常開點斷開（斷開電路）或常閉點閉合（接通電路）

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

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