MATERIAL SHEARING AND CLAMPING DEVICE FOR UPSET MACHINE, WORKING METHOD OF THE MATERIAL SHEARING AND CLAMPING DEVICE

摘要

A material shearing and clamping device for an upset machine, and a working method of the material shearing and clamping device are provided. The material shearing and clamping device comprises a material shearing rod (130), a drive mechanism for driving the material shearing rod, a shear tool (157), a clamping mechanism including a clamp tool (138), a clamp tool open mechanism for opening the shear tool and the clamp tool and placing a blank to a preset position. A container for clamping a blank is formed by the interaction of the shear tool and the clamp tool. The material shearing and clamping device further comprises a spacing and resetting mechanism of the clamping mechanism, the spacing and resetting mechanism makes the clamp tool reset and close relative to the shear tool and restricts the movement of the clamp tool in the process of shearing the blank. In feeding position, the width of the container for clamping the blank in the moving direction of the shear tool is greater than the diameter of the blank. In shearing position, the clamp tool keeps immovable relative to the shear tool, and the container for clamping the blank is unchangeable. The bottom of the sheared blank is smooth, the force on the blank is balanceable and the blank does not decline and shake when molding. The tail end -face of the upset forged work piece is smooth, and the molded work piece is of good quality and high accuracy.