APPARATUS FOR THREE-DIMENSIONAL BENDING OF ROD BLANKS Russian patent published in 2006 - IPC B21D7/06 

FIELD: plastic working of metals.

SUBSTANCE: apparatus includes units for bending in first plane. Said units are in the form of pressing formers and bending tools mounted in driven supports arranged in housing with possibility of motion along blank. Apparatus also includes unit for bending in second plane; said unit is in the form of press placed normally relative to blank axis and having die set. Press is driven by means of power cylinder whose movable rod is joined with one working part of die set. Power cylinder is mounted with possibility of reciprocation motion and it is joined with reciprocal working part of die set. Said cylinder is spring-loaded relative to housing of press to blank side and its motion in that direction is limited by means of adjustable stop. In variant of invention adjustable stop may be in the form of mangles arranged at both sides of cylinder and passing through springs whose one ends are joined with body of cylinder and other threaded ends are provided with nut that may engage with bracket secured to housing of press.

EFFECT: enlarged manufacturing possibilities of apparatus due to using die set whose both parts are moved by means of the same power cylinder, possibility for extracting bent blank, blank whose ends are curved inside without damaging it.

2 cl, 9 dwg