Work-piece arc inner cavity and horn mouth process tool

The utility model discloses a work-piece arc inner cavity and horn mouth process tool comprising a center block, a fastening screw and a location sleeve. The location sleeve is a cylindrical body, the end portion of one end of the location sleeve is provided with a groove, the barrel wall of the location sleeve is provided with a threaded hole penetrating through the location sleeve along the radial direction, and the wall face of an inner cavity of the location sleeve is provided with a slot with a rectangle section. The center block is a round disk body, a protruding block matched with the groove of the location sleeve is arranged on the outer circumference face of the center block, and the end face of the center block is provided with a column-shaped block matched with the slot. The center block is arranged at one end of the location sleeve and one end of the location sleeve is provided with the groove. A processed work-piece is arranged at the other end of the location sleeve, and is fixed into the locati