TOOL FOR SURFACE PLASTIC DEFORMATION Russian patent published in 1997 - IPC

FIELD: mechanical engineering. SUBSTANCE: tool has rotor made of nonmagnetic material, jaws made of nonmagnetic material and defining a ring space, source of permanent magnetic field made up as a ring magnet with axial magnetization, and deforming members mounted inside the ring chamber. The deforming members are movably mounted. The periphery side of the jaws are bounded with a closed curve of periodic profile. The tool has ring plates and device for their controllable rotation about the longitudinal axis of the tool. The device comprises disk with a hub provided with a screw groove, pin, washer with two diametrically opposite projections, and screw. One end of the pin is secured to the disk. The other end is secured to the ring plate. There is a rectangular groove on the housing. The jaw that faces the disk has a radiused groove. The pin is received in the groove. The projections on the washer are received in the rectangular groove and screw groove of the hub. EFFECT: improved design. 3 dwg