East China University of Science and Technology

Shanghai Jiaotong University

Aecc Commercial Aircraft Engine Co., Ltd.

Avic Manufacturing Technology Institute

Aecc Hunan Aviation Powerplant Research Institute

China United Gas Turbine Technology Co., Ltd

Xiancheng Zhang

Shantung Tu

Shuang Liu

Kaiming Zhang

Shulei Yao

Junmiao Shi

Lin Zhu

Congyang Gong

Yunfei Jia

Zhiqiang Li

Ning Wang

Fuzhen Xuan

Xiaobo Wang

Fei Zeng

Peng Han

Xiaofeng Zhao

Jianping Tan

Yun Tu

Shandong Tu

Huayi Cheng

Runzi Wang

Zhaoxing Sun

Yihua Qi

Xiaoning Han

Xumin Zhu

Feng Cheng

Yixin Liu

Yali Yu

Jiawei Wang

Yuxin Chi

Weize Wang

Liqiang Liu

Dingwu Zhang

Lizhang Zhang

Yalong Chen

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

An ultrahigh-temperature wind tunnel erosion testing system is provided, including a fuel system (), an erosion system (), an erosion spray gun (), a test piece fixture () and a testing device; the erosion spray gun () is connected with the fuel system () and the erosion system () respectively; the erosion spray gun () is arranged on a lifting and rotating mechanism (); the test piece fixture () is arranged on one side of the lifting and rotating mechanism () and is opposite to a nozzle of the erosion spray gun (); and the testing device is connected with the test piece fixture (). The plurality of groups of test pieces are circlewise arranged around the lifting and rotating mechanism ().

Ultrahigh-temperature wind tunnel erosion testing system

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

Provided are a thermal barrier coating and a preparation method thereof, which belong to the field of coating technology. The thermal barrier coating has a double-layer coating structure, and includes an intermediate layer attached to a surface of a metal bonding layer, and a top layer, wherein the intermediate layer is formed by atmospheric plasma spraying YSZ porous microspheres, and the top layer is formed by atmospheric plasma spraying Yb—Gd codoped YSZ porous microspheres; the intermediate layer is in contact with the surface of the metal bonding layer, and the top layer is directly exposed to a high-temperature gas environment.

Thermal barrier coating and preparation method thereof

A water jet strengthening and polishing integrated system for blades of a blisk includes a vibration polishing unit and a water jet strengthening unit. The vibration polishing unit includes a vibration polishing bath, the vibration polishing bath is internally provided with a clamp for clamping the blisk, and vibration motors for driving the vibration polishing bath to vibrate are installed on the vibration polishing bath. Top ends of support springs are fixedly connected with the vibration polishing bath, and bottom ends of the support springs are fixedly connected with a workbench. The water jet strengthening unit includes a water jet strengthening device for carrying out water jet strengthening on the blades of the blisk and a driving mechanism for clamping the water jet strengthening device and capable of driving the water jet strengthening device to move in any direction in space.

Water jet strengthening and polishing integrated system and method for blades of blisk

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

A manufacturing method for a high-temperature-resistant metal-packaged fiber Bragg grating sensor includes using a regenerated fiber Bragg grating obtained via high-temperature annealing as a sensitive element so that the grating will not be erased when used at high temperature. The method also includes using a magnetron sputtering method which makes an optical fiber and metal combine better to form on the surface of the optical fiber an adhesive layer and a conductive layer, thereby causing little damage to optical fiber because of the absence of the processes of coarsening, sensitization, etc. of electroless plating and the fact that the method is performed in an anhydrous environment. After magnetron sputtering, the method includes using an electroplating method to thicken and deposit a protective layer, and embedding the optical fiber in a flexible-structure metallic substrate through the electroplating method to achieve the all-metal package.

High-temperature-resistant metal-packaged fiber bragg grating sensor and manufacturing method therefor

Growing community of inventors

Shanghai, China

Xiancheng Zhang