315噸單臂液壓機采用單往式結構，可以3面接近工件，裝匆工件倆單方便，它的執行機構主要由垂直方向的液壓缸和水平方向的液壓缸組成.液壓缸動作順序如圖所示。

控制東統設什方案的選擇

 根據單臂掖壓桃工作過程的分析要實現液壓缸的執行動作，控制系統可以采用多種控徹方案:以維電器為主控元件的傳統型，采用可編鍥控制器(PLC)的拉制系統;應用高級微處理機(或工業控制計抹機)的高性能控制系統。由于實現的功能比較簡單，為了節約成本，本文采用了以繼電器為主控元件的傳統型控制系統。其電路結構向單，技術要求不高，成本較低
315噸單臂液壓機主要實現啟動、停止、手動/白動工作方式選擇、點動前進、點動后退、點動上、點動下、油泵開、抽泵停、急停等動作。采用接觸器來設計主電路，實現油泵的啟動和停止，采用中問繼電器和時間繼電器來實現液壓缸的順序動作，采用熱繼電器來實現過載保護.采用變壓器和整流器為行程開關提供工壓，行程開關的電路田如圖所示。


水平(ping)(ping)掖(ye)壓(ya)(ya)(ya)(ya)缸(gang)前(qian)進到位(wei)時(shi)，行(xing)程(cheng)開(kai)關(guan)1接通(tong)(tong)，中(zhong)(zhong)聞繼(ji)電(dian)(dian)器(qi)(qi)KAl l線(xian)圈褥電(dian)(dian).控制電(dian)(dian)路中(zhong)(zhong)的(de)KAU常閉(bi)(bi)觸點斷(duan)開(kai).從(cong)而使(shi)得水平(ping)(ping)液(ye)(ye)壓(ya)(ya)(ya)(ya)缸(gang)停止前(qian)進豐當水平(ping)(ping)掖(ye)壓(ya)(ya)(ya)(ya)缸(gang)后(hou)退(tui)到位(wei)時(shi)，行(xing)程(cheng)開(kai)關(guan)2接通(tong)(tong)，中(zhong)(zhong)何繼(ji)電(dian)(dian)器(qi)(qi)KA12線(xian)圈得電(dian)(dian)，控制電(dian)(dian)路中(zhong)(zhong)的(de)KA12常閉(bi)(bi)觸點斷(duan)開(kai)，從(cong)而使(shi)褥水平(ping)(ping)掖(ye)壓(ya)(ya)(ya)(ya)缸(gang)停止后(hou)退(tui);當垂直(zhi)液(ye)(ye)壓(ya)(ya)(ya)(ya)缸(gang)下(xia)行(xing)到位(wei)時(shi).行(xing)程(cheng)開(kai)關(guan)3接通(tong)(tong)，中(zhong)(zhong)間繼(ji)電(dian)(dian)器(qi)(qi)KA21線(xian)圈得電(dian)(dian)控制電(dian)(dian)路中(zhong)(zhong)的(de)KA21常閉(bi)(bi)觸點斷(duan)開(kai)，從(cong)而使(shi)乘宜液(ye)(ye)壓(ya)(ya)(ya)(ya)缸(gang)停止下(xia)行(xing);當垂直(zhi)液(ye)(ye)壓(ya)(ya)(ya)(ya)缸(gang)巨行(xing)到位(wei)時(shi)，行(xing)程(cheng)開(kai)關(guan)7接通(tong)(tong)，中(zhong)(zhong)間繼(ji)電(dian)(dian)器(qi)(qi)KA22線(xian)圈得電(dian)(dian)控制電(dian)(dian)路中(zhong)(zhong)的(de)KA22常閉(bi)(bi)觸點斷(duan)開(kai)，從(cong)雨便垂直(zhi)液(ye)(ye)壓(ya)(ya)(ya)(ya)缸(gang)停止上行(xing).