METHOD OF ROD SEPARATION FOR LONG WORKPIECES Russian patent published in 2019 - IPC B26D3/16 B23D23/00 

FIELD: technological processes.

SUBSTANCE: invention relates to metal forming. Method for dividing a rod into long workpieces is described, including feeding the rod before aligning the plane of separation with the plane of introduction of a wedge tool, made in the form of a roller with a V-shaped working edge, giving the rotary motion to the wedge tool, simultaneous one-sided relative to the axis of the rod, the application of a deforming force to the wedge tool and the pressing force to a long workpiece in a common longitudinal radial plane, which has the possibility of rotational motion around the longitudinal axis of the rod, forming a V-shaped groove in the separation plane and separating a long workpiece from the rod, while the value of cyclic alternating stresses in the plane of separation of the rod at the time of separation of the long workpiece from the rod set in the range to a value not less than the yield strength of the metal on the shift, value of cyclic alternating stresses in the plane of the rod separation at the time of application of the wedge tool is set to the value of the elastic limit of a metal, and the plane of application of the pressing force to the long workpiece is set according to the condition of longitudinal stability of this workpiece: (ƒ/l_n)≤η_extra, where ƒ is an elastic deflection of the cantilever part of a long workpiece, mm; l_n is the distance of the plane of application of the pressing force from the plane of separation of the rod, mm; η_extra is permissible, by the condition of longitudinal stability, relative deflection of a long workpiece in the process of splitting the rod.

EFFECT: obtaining high quality billets, stable in shape and size, with end chamfers and smooth end surfaces perpendicular to the axis of a long workpiece.

1 cl, 2 dwg, 1 ex