论文部分内容阅读
在苏联和国外生产实际中,与连续作用的管子电焊机配套工作的可移式切断装置上,广泛使用不同结构的圆盘刀以塑性变形的方法切断管子。这样的切断过程的方法示于下图中。在切断以80米/分的速度实现焊接的管子时,该圆盘刀将经受周期接触载荷的作用,这会降低圆盘刀的寿命,因而在更换切断装置的整套刀具时往往导致上述电焊机停止工作。作用在圆盘刀上的力的大小,与待切断管子的材料、管壁厚度和刀具的径向进给量有关,切断管壁厚度为10～12毫米的管子时,可达30千牛。
In the actual production in the Soviet Union and abroad, with the continuous action of the pipe welding machine supporting the work of the movable cutting device, the use of different structures of the disc cutter plastic deformation of the method of cutting the pipe. The method of such a cutting process is shown in the following figure. When cutting a pipe welded at a speed of 80 m / min, the disc knife will be subjected to cyclic contact loads, which will reduce the life of the disc knife and therefore often result in the replacement of the entire set of cutters stop working. The size of the force acting on the disc knife depends on the material to be cut off, the thickness of the wall and the radial feed of the tool. When the tube with a wall thickness of 10 to 12 mm is cut, it can reach 30 kN.