NEEDLE TOOL TO ROLL THIN-WALL HOLLOW ARTICLES Russian patent published in 2011 - IPC B21D22/16 

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly rolling of thin-wall hollow articles. Roller is fitted on axle in aforesaid holder. Said roller consists of two disks, one fitted on the axle and another one mounted thereon to axially move and be locked thereon. Said both disks are arranged to revolve together. Note here that spinning tool is made up of bunches of metal wire friezes with certain density factor and represents a ring. Roller axle is arranged in the holder to rotate therein, while spinning tool is fitted between said disks. Note also that the tool is specified for certain fit.

EFFECT: expanded performances, higher quality and efficiency, better conditions of deformation.

4 dwg