BENDING PROCEDURE FOR FABRICATION OF SPACE FORM COMPONENTS OF RAIL BRACE CLAMP TYPE OUT OF ROD Russian patent published in 2010 - IPC B21D7/06 

FIELD: metallurgy.

SUBSTANCE: invention refers to metal forming operations and is designed for production of components of rail brace clamp type, "П"-shaped brackets, eyes and such likes out of rods. A work-piece by one is supplied into the zone of stamp bending, is transferred to a bend working position, is held down to a fixed part of the punch and is successively preliminary double-side bent in the first working position. The second work-piece preliminary bent in the first working position is transferred to the second working position of the punch finally bent in the second working position of the punch, and is finally bent in the second working position of the punch. Also at preliminary bending end sections of the work-piece and transient sections are bent in from of arcs connecting the end sections with sides of common "П"-shape of the component and sides connecting intermediate arcs with the middle not bent side of the component used for constraint at shape bending. At final bend of the component is bent in a plane perpendicular relative to the common plane of component shape.

EFFECT: increased efficiency of process due to simultaneous operations with two components; improved quality of fabricated components owing to implementation of bending working tools with cylinder rollers.

2 cl, 8 dwg