METHOD OF PROCESSING WITH FEMALE SPRING Russian patent published in 2008 - IPC B24B39/04 

FIELD: technological processes.

SUBSTANCE: device is used that contains working deforming elements in the form of screw spring turns, ratchet mechanism, handle and casing. Casing has immovable cover, in which one end of screw spring is rigidly fixed and rotary cover, in which the other end of screw spring is installed movably. Billet is inserted into openings of screw spring turns, rotary motion is communicated to the billet and longitudinal feed is sent to device for billet processing with tension. Screw spring twisting and untwisting is carried out by means of handle and ratchet mechanism. Radial feed of working deforming elements is provided by means of processed billet embracing with turns of screw cylindrical spring. Internal diameter of screw cylindrical spring turns is less than the diameter of processed billet for the value of double tension.

EFFECT: technological resources are expanded and net cost of processing is reduced.

7 dwg, 1 ex