METHOD OF CENTRIFUGAL TREATMENT BY SURFACE-PLASTIC STRAINING WITH PNEUMATIC BUFFER Russian patent published in 2011 - IPC B24B39/00 

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, in particular, to method of pulse-impact surface plastic deformation (SPD) treatment, and can be used for finishing and hardening processing. Billet is revolved about its axis. Deforming tool translates along and revolves about it axis. Straining device is used incorporating disk-like rotary casing, ring-like separator with openings fitted on disk periphery and fixed pneumatic chamber. Disk has radially-blunt holes accommodating straining balls. Pneumatic chamber is fitted in bearing arranged on casing face. Radial holes bottoms have holes to communicate with pneumatic chamber. Pneumatic chamber wall adjoining the casing face has sector-like slot to allow access of compressed air into several radial holes with straining balls arranged in processing zone and nearby it.

EFFECT: expanded process performances, higher durability of tools, higher machining precision and reduced roughness of processed surface.

6 dwg, 1 tbl