East China University of Science and Technology

Senodia Technologies (shaoxing) Co., Ltd.

Aecc Commercial Aircraft Engine Co., Ltd.

Avic Manufacturing Technology Institute

Aecc Hunan Aviation Powerplant Research Institute

Shuang Liu

Xiancheng Zhang

Shantung Tu

Shulei Yao

Kaiming Zhang

Bo Zou

Yan Huang

Lin Zhu

Junmiao Shi

Congyang Gong

Yunfei Jia

Zhiqiang Li

Ning Wang

Fei Zeng

Qinglong Zheng

Xiaoning Han

Xumin Zhu

Feng Cheng

Yixin Liu

Jiawei Wang

Lizhang Zhang

Yalong Chen

Yuxin Chi

Huayi Cheng

Zhaoxing Sun

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

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

Provided is an application method of a Micro Electro Mechanical Systems (MEMS) inertial sensor and an electronic device. An application method of an accelerometer includes: based on an influence of a strain, generated under the action of an external force, of the accelerometer on a detection signal of the accelerometer, adopting the detection signal to reflect the external force. An application method of a gyroscope includes: based on an influence of a strain, generated under the action of an external force, of the gyroscope on a detection signal of the gyroscope, adopting the detection signal to reflect the external force. Further provided is an electronic device adopting the foregoing methods.

MEMS inertial sensor, application method of MEMS inertial sensor, and electronic device

A three-axis microelectromechanical system (MEMS) gyroscope includes four proof masses, where the proof masses are connected by spring beams and/or rigid beams; a first proof mass is configured to move in an X-axis direction; a second proof mass is configured to rotate around an X-direction axis, a Y-direction axis, and a Z-direction axis, and when the first proof mass moves in the X-axis direction, the second proof mass is driven to rotate around the Z-direction axis; a third proof mass is configured to move in the X-axis direction and a Y-axis direction, and when the first proof mass moves in the X-axis direction, the third proof mass is driven to move in the Y-axis direction; a fourth proof mass is configured to move in the X-axis direction, and when the third proof mass moves in the X-axis direction, the fourth proof mass is driven to move in the X-axis direction.

Three-axis microelectromechanical system (MEMS) gyroscope

A headphone and an electronic device are provided. The headphone includes a gyroscope, which senses a bone conduction vibration and provides a quadrature error signal for reflecting the bone conduction vibration. Specifically, the headphone includes a transmission assembly that acts directly or indirectly on the gyroscope or an inertial measurement unit (IMU) including the gyroscope. The transmission assembly transmits the bone conduction vibration to the gyroscope to make the gyroscope strain, thereby causing the quadrature error signal of the gyroscope to change to detect the bone conduction vibration with sensitivity.

Headphone and electronic device

Growing community of inventors

Shanghai, China

Shuang Liu