Turbine disc mortise ultrasonic profiling extrusion strengthening device and method

Abstract

The invention discloses a turbine disc mortise ultrasonic profiling extrusion strengthening device and method.The device comprises an ultrasonic vibration assembly used for providing ultrasonic vibration and static extrusion force propagating in the axial direction; the profiling extrusion assembly is arranged at the output end of the ultrasonic vibration assembly; the profiling extrusion assembly comprises an extrusion head, and the extrusion head is provided with a non-circular section contour matched with the contour of the inner wall of a mortise of a turbine disc to be machined. The clamping assembly is used for positioning and clamping the turbine disc; at least one protruding part is arranged on the side surface of the extrusion head and used for extruding the side wall of the mortise when the extrusion head is fed in the axial direction of the mortise so as to convert ultrasonic vibration and static extrusion force propagating in the axial direction into extrusion force in the normal direction of the side wall of the mortise. The problems that when an existing ultrasonic rolling and hole extrusion technology is used for machining the turbine disc mortise structure, space adaptability is poor, loads are difficult to apply in the normal direction of the side wall of the mortise, and then the side wall is difficult to effectively reinforce can be solved.

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