METHOD OF VIBRATION ROLLING OF SHAFTS AND SCREWS Russian patent published in 2011 - IPC B24B39/04 B21H3/12 

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to surface plastic deformation of shafts and screws. Billet is revolved relative to lengthwise axis. Deforming device consists of case accommodating support elements that houses straining balls. Support element is made up of helical coil spring embracing processed billet and having seats on inner surface. Said support element is arranged in base central bore on elastic sleeve. One end of said spring is rigidly secured to case face. Starting balls are arranged in aforesaid seats.

EFFECT: expanded process performances, higher accuracy of processing.

7 dwg, 1 ex