US 11,904,423 B2
Machining path coordination method for bilateral ultrasonic rolling of blade surfaces
Xiancheng Zhang, Shanghai (CN); Kaiming Zhang, Shanghai (CN); Shulei Yao, Shanghai (CN); Shuang Liu, Shanghai (CN); Feng Cheng, Shanghai (CN); and Shantung Tu, Shanghai (CN)
Assigned to EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY, (CN)
Appl. No. 17/764,136
Filed by EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY, Shanghai (CN)
PCT Filed May 20, 2020, PCT No. PCT/CN2020/091264
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/057050, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 201910922505.6 (CN), filed on Sep. 27, 2019.
Prior Publication US 2022/0324067 A1, Oct. 13, 2022
Int. Cl. B23P 9/02 (2006.01)
CPC B23P 9/02 (2013.01) 4 Claims
OG exemplary drawing
 
1. A machining path coordination method for bilateral ultrasonic rolling of blade surfaces, comprising:
Step S1, layering a blade to obtain contour curves with shapes of “A” and “n” of blade edges at different heights of a blade model;
Step S2, determining endpoints of machining paths of the blade;
Step S3, planning blade thickness and rotation angle, which comprising:
Step S31, obtaining main direction angle αm of the contour curves;
Step S32, solving the blade thickness d;
Step S33, obtaining a rotation angle θ required for blade machining when the contour curve is in the shape of “A”,

OG Complex Work Unit Math
wherein αm is main direction angle of the contour curve;
Step S34, obtaining a rotation angle required for blade machining when the contour curve is in the shape of “n”; the step S34 comprising:
Step S341, setting most area of blade body is set as a main direction segment, setting area adjacent front and rear edges as a vertical segment and setting area between the main direction segment and the vertical segment as a transition segment;
Step S342, calculation method of rotation angle for blade machining of the main direction segment is consistent with that of the step S33;
Step S343, the rotation angle for the blade machining of the vertical segment is zero;
Step S344, taking two points P and Q from the transition segment, wherein the point P is an end point of the vertical segment and the point Q is a starting point of the main direction segment, if there are m machining points between points P and Q, the blade will rotate with an interval of angle

OG Complex Work Unit Math
wherein β is the main direction angle at the point Q.