TOOL FOR SURFACE FINISHING AND HARDENING Russian patent published in 1997 - IPC

FIELD: surface hardening of low rigid machine parts, plastic metal working. SUBSTANCE: tool includes body, magnetic and non-magnetic jaws forming annular chamber. Permanent annular magnet and deforming members are arranged in said chamber. Unit for unloading jaws is mounted on body coaxially with it at side of magnetic jaw. Said unit has additional annular permanent magnet and drive means for adjustment motion of said magnet along axis of tool body. Said additional annular magnet is turned to annular magnet arranged inside chamber by its different sign pole. EFFECT: improved design. 1 dwg