摘要:液壓剪切機(jī)縱向相鄰的長板料兩側(cè)之間分別接合固定刀具和保持部件的可動刀具，其特征在于后支撐件的可動刀具部分和液壓驅(qū)動部分在相同的流體壓力源下來實(shí)現(xiàn)液壓致動剪切，后者保持平行切除的牽制力和支持力是可變剪切力在不同尺寸與板料剪切時(shí)的力量，流體壓力的大小表示原變量自動按照抗剪的剪切力施加在特定板料的力大小。

　　　剪切機(jī)有一個限位開關(guān)，預(yù)設(shè)在與其相鄰的板料活動方向上，就是板料到達(dá)頂端的那一邊的位移，減少了大量支撐空間，從而用來防止高壓的接觸摩擦，通過減少壓緊和支持板料時(shí)的靜電摩擦，使剪切縱向移動，從而減少摩擦。

　　　本設(shè)計(jì)的液壓剪切機(jī)是一種雙液壓泵系統(tǒng)的常規(guī)液壓機(jī)械，在該系統(tǒng)中，低壓力高容積泵和高壓力低容積泵連接在一起，供給能量給液壓剪切刀來致動液壓缸快速穿越要剪切的板料，迅速完成動刀。在這種雙泵系統(tǒng)的高低壓容積泵被自動卸載屆時(shí)，所需要的剪切力和保持向下和向后的支持壓力將供給高壓力低容積泵，以提供所需的剪切力，從而減少了板料剪切機(jī)的背部支撐力。

關(guān)鍵詞：液壓  剪切機(jī)  雙泵系統(tǒng)

ABSTRACT:The fixed cutter and the holding member are respectively joint between long sheet on both sides of hydraulic shearing machine longitudinally adjacent, characterized in that the movable tool parts support and the hydraulic drive part of the realization of hydraulically actuated cut down in the same source of fluid pressure, the latter holding parallel resection of drag force and support force is the force variable shear force in different sizes and shearing of the fluid pressure, said the size of original variables automatically according to the shear stress shear applied size in particular sheet force. 

　　　Shearing machine has a limit switch, during the adjacent sheet movement, a sheet that side of the displacement reaches the top, reducing the amount of support space, so as to prevent the contact friction pressure, static friction reduction by pressing and supporting plate material, shear vertical movement, thus reduce friction. 

　　　Hydraulic shearing machine of this design is the conventional hydraulic machinery a double hydraulic pump system, in the system of low pressure, high volume pump and high pressure low volume pump is connected together, sheet supply energy to the hydraulic shear knife to actuate the hydraulic cylinder  shear and done quickly. In this double pump system of the high and low pressure pump, shear stress and maintain downward and backward support pressure will supply high pressure low volume pump, the shear force required, thus reducing the plate shearing machine back support force.

Keywords：hydraulic；shearing machine；dual pump system