METHOD FOR ROLL CUTTING AND STAMP FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC B23D23/04 

FIELD: metallurgy.

SUBSTANCE: cutting of a rod is carried out by twisting, followed by separation by plastic shearing of one part relative to the other. The separation of the rod is carried out at a ratio of the current strain value of plastic torsionγ_i to the magnitude of the shear strain ε_max: in the process of cutting, the value of the rod clamping force is reduced in proportion to the reduction of the cutting force. The stamp contains a bedplate, knives and a water cushion with an ejector. The stamp is equipped with a slider and a clamp. The slider is located on the ejector with the possibility of vertical movement, and the clamp is placed on the bedplate. On the facing surfaces of the slider and the clamp there are wedge channels in which insert-knives are placed and spring-loaded with respect to each other for expansion. The stamp is provided with two spacers and two traverses that can be contacted with them. One spacer is mounted on the bedplate and can interact with the traverse contacting the clamp. The second one is mounted on the ejector and can interact with the traverse contacting the slider.

EFFECT: increase the quality of the blank.

2 cl, 9 dwg