US 11,814,714 B2
Device for reducing and homogenizing residual stress of a metal frame
Chunguang Xu, Beijing (CN); Wenyuan Song, Beijing (CN); Peilu Li, Beijing (CN); Peng Yin, Beijing (CN); Yuren Lu, Beijing (CN); and Shuangyi Li, Beijing (CN)
Assigned to BEIJING INSTITUTE OF TECHNOLOGY, Beijing (CN)
Filed by BEIJING INSTITUTE OF TECHNOLOGY, Beijing (CN)
Filed on Jul. 20, 2021, as Appl. No. 17/380,090.
Claims priority of application No. 202010718619.1 (CN), filed on Jul. 23, 2020.
Prior Publication US 2022/0025500 A1, Jan. 27, 2022
Int. Cl. C22F 3/00 (2006.01); B06B 3/00 (2006.01); C21D 10/00 (2006.01)
CPC C22F 3/00 (2013.01) [B06B 3/00 (2013.01); C21D 10/00 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A device for reducing and homogenizing residual stress of a metal frame, comprising: a substrate, a frame fixing device, annular end covers and ultrasonic vibrators; wherein,
a groove with an upward opening is provided in the middle of the substrate, and a shape enclosed by vertical side walls of the groove matches a shape of an outer frame of the metal frame to be processed;
a plurality of through holes that are arranged around the side walls of the groove and disposed toward different directions in a horizontal plane, and the through holes are vertically intersected with the groove;
the ultrasonic vibrators holes are provided on the substrate and have a one-to-one correspondence with the through holes, and front ends of the ultrasonic vibrators extend respectively into the corresponding through holes to abut against the metal frame in the groove;
a plurality of cylindrical branches that are diverged disposed toward different directions are provided along a horizontal outer edge of the substrate, respective middle axial portions of the cylindrical branches are communicated with the through holes in one-to-one correspondence, and outer end portions of the cylindrical branches are fitted with the annular end covers;
middle parts of the ultrasonic vibrators are provided circumferentially with fixing flanges that are fixed to the end covers by screws, and threaded rods of the screws are sleeved with compression springs between their nuts and the fixing flanges;
the ultrasonic vibrators each include an ultrasonic transducer and an ultrasonic horn that is located at a front portion of the corresponding ultrasonic vibrator and is coated with a coupling agent on its front end; and
after the metal frame to be processed is placed in the groove, the frame fixing device is also arranged in the groove where the metal frame is located.