| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: invention refers to metal forming operations and is designed for implementation at production of parts of rail brace clamp type out of rods. A work-piece by one is supplied into the zone of stamp bending, is transferred to a bend working position, and is fixed in a punch. Further the work-piece is successively preliminary double-side bent in the first working position, is transferred into the second working position of the punch and is finally bent in die impressions formed with movable and fixed mandrels-templates and with bending working components. When the work-piece is fixed in the first working position of the punch, it is pushed into a slit of a movable cylinder mandrel to the middle of the work-piece. Further the central part of the work-piece is bent by pushing it with the cylinder mandrel between rollers till there is formed a ""-shape of the work-piece. Sides of the work-piece are bent along the shape of the mandrel, whereupon the work-piece is removed from the mandrel, is fixed in the second working position of the punch enveloping a mandrel-tooth with a middle part of the work-piece. ""-shape of the work-piece is bent by turning the middle part to its ends in a plane perpendicular to the plane of the work-piece of ""-shape produced after bend in the first working position of the punch. Also the second work-piece is loaded and fixed in the first working position of the punch simultaneously with final bend of the work-piece in the second working position. ^ EFFECT: expanded process functionality, raised process efficiency. ^ 17 dwg |
