公开(公告)号：US11136635B2

公开(公告)日：2021-10-05

申请号：US16606854

申请日：2017-04-21

Applicant: General Electric Company

Inventor： Qing Gao ,  Yingna Wu ,  Thomas Edward Wickert ,  Yingbin Bao

IPC: C21D7/08 ,  B23P9/02

Abstract: An ultrasonic roller burnishing system comprises a roller and a controller. The roller is configured to be pressed against a surface of a workpiece to a pressing depth, roll on the surface at a feed rate, and vibrate at an ultrasonic frequency under a back pressure. The roller is pressed and rolled by a motion unit which is driven by a drive motor. The vibrating of the roller is driven by an ultrasonic vibration unit with an input current inputted thereinto. The controller is configured to adjust at least one of the pressing depth, the back pressure, the input current and the feed rate based on an expected residual compressive stress and a real time output power of the drive motor, to generate a residual compressive stress in the workpiece which is in an expected range predetermined based on the expected residual compressive stress.

公开(公告)号：US10661368B2

公开(公告)日：2020-05-26

申请号：US15470016

申请日：2017-03-27

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Qing Gao ,  Renwei Yuan ,  Howard Paul Weaver ,  Richard Leigh Adrian ,  Xiaobin Chen

IPC: B23H1/04 ,  B23H9/10 ,  F01D5/34 ,  F01D9/04 ,  B23P15/00

Abstract: An apparatus includes an electrode assembly comprising a carriage having a plurality of electrode holders, the electrode holders being respectively configured to detachably receive a plurality of electrodes, the electrodes include a plurality of first electrodes and a plurality of second electrodes. The first electrodes are configured for rough machining a workpiece by electric discharging or wire electric discharging to remove material from the workpiece, the second electrodes are configured for finish machining the rough machined workpiece by electric discharging to remove material from the rough machined workpiece.