Apparatus and method for surface toothed-roll strengthening and toughening of additively manufactured cylindrical component

An apparatus for surface toothed-roll strengthening and toughening of an additively manufactured cylindrical component, comprising a lower die seat, an upper die seat disposed above the lower die seat, and guide columns fixedly disposed between the lower die seat and the upper die seat;

• wherein a rotating base is disposed inside the lower die seat, a positioning assembly is disposed on the rotating base, a first vertical positioning mechanism is disposed on a bottom surface of the upper die seat, and a bottom positioning end of the first vertical positioning mechanism is fixedly connected to an inner wall ultrasonic roller device;
• and the inner wall ultrasonic roller device comprises:
• an inner wall radial slot seat, two inner wall roller seats symmetrically and slidably disposed in two ends of the inner wall radial slot seat, and two inner wall rollers rotatably disposed at two outer ends of the two inner wall roller seats, wherein axes of the two inner wall rollers are vertically arranged;
• wherein two outer wall ultrasonic roller devices are symmetrically arranged on two sides of the inner wall ultrasonic roller device;
• each of the two outer wall ultrasonic roller devices comprises:
• an outer wall radial slot seat, an outer wall roller seat slidably disposed within the outer wall radial slot seat, and an outer wall roller, which is rotatably arranged at an end of the outer wall roller seat and arranged opposite to a corresponding one of the two inner wall rollers;
• each of the two outer wall ultrasonic roller devices is transmission-connected to a corresponding one of the guide columns through a second vertical positioning mechanism, and the two inner wall rollers and the two outer wall rollers of the two outer wall ultrasonic roller devices are helical cylindrical gears with opposite helical directions;
• and
• wherein each of the inner wall radial slot seat and the two outer wall radial slot seats of the two outer wall ultrasonic roller devices is provided with an ultrasonic vibration device thereon.