US 11,883,929 B2
Abrasive peening apparatus and abrasive peening method
Taiki Matsui, Uozu (JP)
Assigned to SUGINO MACHINE LIMITED, Uozu (JP)
Filed by SUGINO MACHINE LIMITED, Uozu (JP)
Filed on Jul. 14, 2021, as Appl. No. 17/375,287.
Claims priority of application No. 2020-147731 (JP), filed on Sep. 2, 2020.
Prior Publication US 2022/0063058 A1, Mar. 3, 2022
Int. Cl. B24C 1/10 (2006.01); B24C 3/12 (2006.01); B24C 5/04 (2006.01); B24C 9/00 (2006.01); B24B 57/02 (2006.01); B24C 3/04 (2006.01); B24C 7/00 (2006.01); B24B 31/00 (2006.01); B24C 5/02 (2006.01); B24C 3/06 (2006.01)
CPC B24C 1/10 (2013.01) [B24B 31/003 (2013.01); B24C 3/065 (2013.01); B24C 3/12 (2013.01); B24C 5/02 (2013.01); B24C 7/0007 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An abrasive peening apparatus for use in peening a workpiece using peening liquid in which abrasive particles are suspended, the abrasive peening apparatus comprising:
a processing tank including a table in a bottom portion thereof on which a workpiece can be supported while immersed in the peening liquid;
a dispensing chamber having a plurality of recesses on an upper surface thereof, the dispensing chamber disposed in the bottom portion of the processing tank and being configured to hold and dispense upwardly therefrom, toward the table, peening liquid contained therein;
a stirring nozzle disposed at a center of each of the plurality of recesses and being directed vertically upward, with each of the stirring nozzles being in fluid communication with the dispensing chamber to receive and eject therefrom the peening liquid;
a peening nozzle disposed inside the processing tank, the peening nozzle configured and arranged to eject the peening liquid toward the table; and
a moving device configured to move the peening nozzle relative to the table,
wherein each of the stirring nozzle includes
a body extending upward,
a peening liquid inlet located at a lower end of the body to receive peening liquid from the dispensing chamber,
an internal outlet located inside the body, the internal outlet being in fluid communication with the peening liquid inlet,
a stirring-nozzle outlet located at an upper end of the body,
a passage connecting the internal outlet and the stirring-nozzle outlet, the passage extending vertically inside the body, and
a radially oriented suction port located on an outer surface of the body and within the recess in which the stirring nozzle is disposed, the suction port being in fluid communication with a lower end of the passage so as to entrain abrasive particles from within the recess in which the given stirring nozzle is disposed into peening fluid flowing through the passage from the internal outlet to the stirring-nozzle outlet.