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苏联发明的这种剪用来横切运动着的金属坯,例如连铸坯。现有的摆式剪结构是:框架悬挂在固定轴上,并有两个相互作用的剪刃。然而,这种飞剪剪切质量不好。框架自由悬挂在轴上,下剪刃固定在框架上,液压缸也装在其中,缸的活塞杆与沿框架导轨滑动的刀架相联,上剪刃就固定在该刀架上。这种结构的摆式剪在技术性能方面最接近本刊将介绍的液压摆式剪。其缺点是:切口不垂直,以及剪刃承受剪刀相对待切坯料的偏转而引起的附加载荷。此外,在剪切过程中,坯料切断部分向运输面下方移动,这就要求在剪切机后面设有专门的摆动辊道。与一般运输辊道相比,其结构更为复杂。本发明目的在于:改善剪切质量,并通过减少剪刀相对于待切坯料的偏转而提高剪刃的使用受命。为此,剪切机上要增设与悬挂轴绞接的摆杆和摆杆的缓冲档块。图1中示出了所推荐的液压摆式剪始切状态;图2示出了剪切机的终切状态。
This type of shear, invented by the Soviet Union, is used to cross a moving metal billet, such as a slab. The existing pendulum shear structure is: the frame is suspended on a fixed shaft and has two interacting shear blades. However, this flying shears cut poor quality. The frame is freely suspended on the shaft, the lower cutting edge is fixed on the frame, and the hydraulic cylinder is also mounted therein. The piston rod of the cylinder is connected to the knife holder which slides along the guide rail of the frame, and the upper cutting edge is fixed on the knife holder. This structure of pendulum shear in the technical performance of the closest we will introduce the hydraulic pendulum shear. The disadvantage is that the incision is not vertical, and the shear blade is subject to additional load caused by the deflection of the scissors relative to the blank to be cut. In addition, during the shearing process, the cut-off portion of the blank is moved below the transport surface, which requires the provision of a special swinging roller behind the shears. Compared with the general transport roller, its structure is more complicated. The object of the invention is to improve the quality of the shearing and to improve the use of the shearing blade by reducing the deflection of the shearing blade relative to the material to be cut. To this end, shearing machine to be added with the suspension shaft hinged the swing lever and the pendulum buffer block. The recommended hydraulic pendulum cut-off state is shown in FIG. 1; FIG. 2 shows the final cut-out state of the shear.