The machine vice comprises a body, two posts with rotating jaws, one of which is equipped with a rotation drive, and a mechanism for translational movement of the posts relative to each other in the horizontal direction, equipped with a movement drive. The mechanism of translational movement of the racks is self-centered, both racks are provided with the ability to move relative to the body in opposite directions. The body is equipped with a workpiece installation table, which is located symmetrically to both racks, is equipped with a mechanism for translational movement in the vertical direction and is equipped with a movement drive, and the control systems for the jaw rotation drive and the rack and table movement drives are united by a common numerical control system.