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我厂1974年从西德引进五台施罗曼飞剪。由于原设计在工艺方面,未能全面地考虑从轧制到剪切前后工序中带钢厚度变化等问题,致使飞剪频次发生事故,如上刃架开焊,O_3和O_5点铰链处开裂等问题,影响了正常运行。从机械原理的角度上来论述,剪切机构是合理的,但在设计上确存在不合理之处。如上刃架的方框结构中的上翼缘开个凹口,装液压马达、双向涡轮减速机筋板配置和螺孔位置选择等都会削弱刚度,增加应力集中,这些应在飞剪的改型设计中进行修正。本文根据该厂1~#剪由原用№3型轨迹改用№2型轨迹剪切2m定尺钢板,在飞剪运行中改善了受力状态。从设备结均和电气控制,以及剪切机构的原理方面进行论证,采用大径剪切优于小半径剪切。
I plant in 1974 from West Germany introduced five Schroeder flying shear. As the original design in the process, failed to fully consider from the rolling to the shear process before and after the strip thickness changes and other issues, resulting in the frequency of flying shear accidents, such as the upper edge bracket open welding, O_3 and O_5 point at the hinge cracking and other issues , Affecting the normal operation. From the point of view of mechanical principle to discuss, the shear mechanism is reasonable, but there are unreasonable design. As the upper edge of the rack frame structure to open a notch in the upper flange, hydraulic motor installed, bi-directional turbine reducer rib configuration and screw position will reduce the rigidity and increase stress concentration, these should be modified in the flying shear Correction in the design. This article according to the plant 1 ~ # cut by the original № 3-type track to № 2-type track cut 2m ruler plate, flying shear operation to improve the stress state. From the equipment and electrical control and the principle of shear mechanism to demonstrate that the use of large-diameter shear is better than a small radius shear.