Rotary die forging waste blank swinging and positioning tool and swinging and positioning method

The invention discloses a swing positioning tool and a swing positioning method for rotary die forging blanks, belongs to the field of die forging blank positioning tools, and aims to shorten the swing time and improve the positioning accuracy. Comprising a base plate, a supporting plate and a centering mechanism. A hole matched with a mold cavity is formed in the middle of the base plate; the supporting plate can cover the hole of the base plate in a translation opening manner; the centering mechanism comprises a clamping part used for clamping a rough blank and a driving device connected with the clamping part and used for driving the clamping part to work. In the vertical direction, the clamping part is located above the supporting plate, the clamping part is provided with a clamping area for containing a rough blank, and the center of the clamping area is aligned with the center of the hole; and a space for allowing the supporting plate to move away is reserved between the substrate and the centering mech