CLAMPING DEVICE Russian patent published in 2018 - IPC B23Q3/06 B23B31/165 

FIELD: machine building.

SUBSTANCE: device relates to machine building. Device comprises a housing with a clamping three-jaw self-centering mechanism mounted therein, comprising a basic central and basic lateral cams located at an angle of 120° to each other, and a mechanism for moving said jaws. Movement mechanism is made in the form of a drive screw located in the longitudinal plane of the housing surrounding the drive screw of the mechanism with an expansion nut mounted on the central basic cam, a central double-sided pinion rack mounted on the central basic cam, one-sided pinion racks mounted on the lateral basic cams and facing the central rack. Furthermore, between each side of the central rack and one-sided pinion racks, the corresponding pinion gear is located.

EFFECT: device can be used for fastening articles machined on machining tools.

1 cl, 4 dwg