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Basic requirements for flying shears in wire production

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飞剪机用来横行剪切的轧件。它可以装在连续式轧机的轧制作业线上,亦可装在横切机组,连续镀锌机组等连续作业精整机组上。随着连续轧机的发展,飞剪机得到越来越广泛地应用。     飞剪机的特点是能横向剪切运动的轧件,对它有三个基本要求:(1)剪刃在剪切轧件时要随着运动的轧件一起运动,即剪刃应该同时完成剪切和移动两个运动,且剪刃在轧件运动方向的瞬时分速度V应与轧件运动速度VO相等或大2~3﹪,在剪切轧件时,

A rolling part used for transverse shear. It can be installed on the rolling line of continuous rolling mill, also can be installed on the crosscut unit, continuous galvanizing unit and so on continuous finishing unit. With the development of continuous rolling mill, fly shear machine has been more and more widely used.


Flying shear is characteristic of transverse shearing movement of the rolled piece, it has three basic requirements: (1) when the shear rolled piece of shear blade movement together with the movement of the rolled piece, which should be done at the same time of shear blade shear and move two movements, and the direction of motion in the rolled piece of shear blade should be with the workpiece speed in transient speed V VO equal or big 2 ~ 3 ﹪, when shear rolled piece, cutting edge in the movement direction of the rolled piece of instantaneous velocity V, if less than the rate of movement of the rolled piece where V0, the blade will hinder the movement of the rolled piece. It will make the rolled piece bend and even cause the wrapped knife accident. On the contrary, the instantaneous velocity V of the shear blade in the motion direction of the rolled piece is much larger than that of the rolled piece V0. This will produce great tensile stress in the rolled piece, which will affect the shear quality of the rolled piece and increase the impact load of the flying shear; (2) according to the different product specifications and the requirements of users, the flying shear machine should be able to shear the length of a variety of specifications and make the size tolerance of the length and the quality of the shear section comply with the relevant national regulations. (3) meet the productivity requirements of the mill or unit.