滚筒式飞剪设计计算和分析  

Design calculation and analysis of drum flying shear

作　　者：郑祥臣[1] 周云根[1] 柳会梅 杨国良[1] ZHENG Xiangchen;ZHOU Yungen;LIU Huimei;YANG Guoliang(WISDRI Engineering and Research Incorporation Limited,Wuhan 430223,China)

机构地区：[1]中冶南方工程技术有限公司,湖北武汉430223

出　　处：《轧钢》2024年第1期89-94,111,共7页Steel Rolling

摘　　要：滚筒式飞剪是冷轧带钢生产线的关键设备,以土耳其某钢厂镀锌线为契机,在吸收平直剪刃、螺旋线剪刃优点的基础上,完成了优化的斜直剪刃形式的滚筒式飞剪设计,实现了对薄规格带钢的剪切。主要介绍了斜直剪刃倾角的设计原则,以及剪切力、电机速度和功率的计算方法。与螺旋线剪刃相比,斜直剪刃的剪刃间隙不那么均匀,但也呈现一定规律,可以通过对滚筒上剪刃槽进行修磨来实现剪刃间隙的均匀,进而实现对薄带钢的剪切。在满足结构设计要求的前提下,增大剪刃倾角可以降低剪切力,进而降低电机功率。设计时采用柯洛辽夫公式计算剪切力,其中剪切面积利用三维软件测算。电机需要克服剪切力和滚筒转动惯量,其中剪切力与剪刃倾角成正比,转动惯量与机组速度的三次方成正比。斜直剪刃滚筒式飞剪设计方案在实际生产中得到验证,满足了生产要求。Drum flying shear is the key equipment of the cold strip rolling line.Taking the galvanizing line of a steel plant in Turkey as an opportunity,the drum flying shear with optimized oblique straight blade was designed based on absorbing the advantages of straight blade and spiral blade,which realized the cutting of thin gauge strip.The design principles of the inclination angle of the oblique straight blade,as well as the calculation methods of shear force,motor speed and power were introduced.Compared with the spiral drum flying shear,the blade clearance of the oblique straight blades was not so uniform,but it also showed a certain pattern.The groove edge installed the blade was polished to achieve uniform blade clearance and realize the cutting of thin gauge strip.On the premise of meeting the structural design requirements,increasing the inclination angle of the blade can reduce the shear force,thereby reducing the motor power.The shear force was calculated by using Kololyov's formula during design,and the cutting area was calculated by using three-dimensional software.The motor needs to overcome the shear force and the rotational inertia of the drum,where the shear force is proportional to the inclination angle of the blade,and the rotational inertia is proportional to the cubic speed of the strip.The design scheme of drum flying shear with oblique straight blade has been verified in the actual production and meets the design requirements.

关 键 词：滚筒式飞剪 平直剪刃 螺旋线剪刃 斜直剪刃 剪刃间隙 剪切力 剪刃倾角 低成本 

分 类 号：TG333.21[金属学及工艺—金属压力加工]