East China University of Science and Technology

Avic Manufacturing Technology Institute

Kaiming Zhang

Shuang Liu

Xiancheng Zhang

Shantung Tu

Shulei Yao

Lin Zhu

Zhiqiang Li

Junmiao Shi

Yunfei Jia

Congyang Gong

Zhaoxing Sun

Xiaoning Han

Xumin Zhu

Feng Cheng

Yixin Liu

Jiawei Wang

Huayi Cheng

The application relates to a robot machining system and control method for ultrasonic surface rolling process of an aircraft engine blade. The robot machining system includes: a robot, to which an ultrasonic surface rolling process device is fixed, the robot drives the ultrasonic surface rolling process device to move; a base provided with a spindle turntable and a three-dimensional mobile lifting device, the spindle turntable being provided with a rotatable blade clamp, and a flexible follow-up support head being fixed to the three-dimensional mobile lifting device; and a control system, which is in electrical connection or communication connection with the robot, the spindle turntable and the three-dimensional mobile lifting device, respectively. According to the application, the robot assists in clamping ultrasonic rolling device and cooperates with the three-dimensional mobile lifting device and the flexible follow-up support head, such that the accurate ultrasonic surface rolling process of blade is realized.

Robot machining system and control method for ultrasonic surface rolling process of aircraft engine blade

A double-sided ultrasonic rolling cooperative strengthening system and a control method thereof are provided. The system includes a first mechanical arm subsystem, a second mechanical arm subsystem, a first ultrasonic rolling strengthening subsystem, a second ultrasonic rolling strengthening subsystem and a servo turntable (); the servo turntable () is configured to fix a blade to be processed; the first ultrasonic rolling strengthening subsystem is provided at an end of the first mechanical arm subsystem; and the second ultrasonic rolling strengthening subsystem is provided at an end of the second mechanical arm subsystem. The way that the mechanical arm is equipped with an ultrasonic rolling strengthening device improves a degree of freedom of processing the blade, and the first mechanical arm subsystem, the second mechanical arm subsystem, the first ultrasonic rolling strengthening subsystem, the second ultrasonic rolling strengthening subsystem and the servo turntable () are provided to cooperate to realize double-sided processing.

Double-sided ultrasonic rolling cooperative strengthening system and control method thereof

The present application provides an on-machine point cloud detection and compensation method for processing complex surfaces, which comprises: step S, installing a detecting and scanning actuator on an ultrasonic rolling machine tool; step S, installing a processed workpiece on the chuck which is scanned by the detecting and scanning actuator to obtain the point cloud data of the workpiece in a coordinate system of detecting and scanning actuator, which is converted into the point cloud data of the workpiece in a coordinate system of machine tool; step S, processing the point cloud data of the workpiece in the coordinate system of machine tool; step S, obtaining and compensating the shape error feature of the workpiece according to theoretical design data of the processed workpiece and processed point cloud data of the workpiece in the coordinate system of machine tool. The accuracy and efficiency of complex surface strengthening is improved in the present application.

On-machine inspection and compensation method employing point clouds and applied to complex surface processing

Provided is a bilateral ultrasonic rolling processing track coordination method for a blade surface, the method comprising: step S, performing layering processing on a blade to acquire a contour curve of 'A'-shaped and “n”-shaped blade edges of a blade model at different heights; step S: determining the endpoints of a blade processing track; and step S: planning the thickness and the rotation angle of the blade, comprising: step S, solving a main direction angle αof the contour curve; step S, solving the thickness d of the blade; step S, solving a rotation angle required by blade processing when the blade edge is “A”-shaped; and step S, solving the rotation angle required by blade processing when the blade edge is “n”-shaped. According to the method, blade deformation generated by an ultrasonic rolling force is reduced, the processing efficiency is improved, and the blade processing precision is also improved.

Machining path coordination method for bilateral ultrasonic rolling of blade surfaces

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Shanghai, China

Kaiming Zhang