METHOD FOR WORKING SECTION MATERIAL AND DEVICE FOR ITS EMBODIMENT Russian patent published in 1997 - IPC

FIELD: plastic working of section materials. SUBSTANCE: working of section material is carried out by preliminary partial cutting of material over the entire contour of cross-section and subsequent separation of cut part. Used in cutting and working are bushing-type tools whose hollows accommodate cut or worked material. In this case, used additionally for hollow material is mandrel with two bushing-type tools with deforming members. In the course of cutting and working one tool is immovable while the other executes relative to the first one, motion over trajectory presenting a flat figure from two contiguous ovals. In this case, motion is started from point of contact of ovals. The device has body accommodating immovable tool and movable tool is secured in body of connecting rod. Actuating mechanism of the device includes connecting rod and eccentric bushings coaxially located in connecting rod end and periodically rotating with possibility of changing of eccentricity by regulating eccentric bushings. Design of the device provides for a wide use of various means of automation and mechanization. EFFECT: higher efficiency. 4 cl, 12 dwg