公开(公告)号：US20230356313A1

公开(公告)日：2023-11-09

申请号：US18347260

申请日：2023-07-05

Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS

Inventor： Di ZHU ,  Shuanglu DUAN ,  Jia LIU ,  Dong ZHU

IPC: B23H7/12 ,  B23H3/04

CPC classification number: B23H7/12 ,  B23H3/04

Abstract: The present disclosure provides an electrochemical machining device and a method for a blisk using an electrode array, which relate to the technical field of electrochemical machining. The electrochemical machining device comprises an outer ring-shaped rotating ring, an inner ring-shaped base and a plurality of cathode rods. An inner diameter of the outer ring-shaped rotating ring is larger than an outer diameter of the inner ring-shaped base, and an inner diameter of the inner ring-shaped base is larger than an outer diameter of the blisk. The outer ring-shaped rotating ring and the inner ring-shaped base are coaxially arranged. Middle parts of the cathode rods are connected with the inner ring-shaped base, outer ends of the cathode rods are rotatably connected with the outer ring-shaped rotating ring, and inner ends of the cathode rods are provided with trepanning cathode pieces or radial feeding electrodes.

公开(公告)号：US20250018485A1

公开(公告)日：2025-01-16

申请号：US18221622

申请日：2023-07-13

Applicant: Nanjing University of Aeronautics and Astronautics

Inventor： Dengyong WANG ,  Shuofang ZHOU ,  Di ZHU ,  Wenjian CAO ,  Jun ZHANG ,  Zengwei ZHU

IPC: B23H3/04

Abstract: A revolving cathode tool and method for co-rotating electrochemical machining of an inner wall of an aero-engine casing are provided, and relates to the technical field of electrochemical machining. The co-rotating electrochemical machining revolving cathode tool comprises a power supply, a cathode shaft, an anode workpiece and a flexible cathode assembly. The cathode shaft is electrically connected with a cathode of the power supply. The anode workpiece is electrically connected with an anode of the power supply. One end of the cathode shaft is connected with the flexible cathode assembly. The problem that a non-array complex structure of the inner wall of the aero-engine casing cannot be machined through counter-rotating electrochemical machining is fundamentally solved. The diameter of the cathode tool is 1/n of the diameter of the anode workpiece.

公开(公告)号：US20230339031A1

公开(公告)日：2023-10-26

申请号：US18138610

申请日：2023-04-24

Applicant: Nanjing University of Aeronautics and Astronautics

Inventor： Jia LIU ,  Shuanglu DUAN ,  Di ZHU

IPC: B23H3/04 ,  B23H11/00

CPC classification number: B23H3/04 ,  B23H11/003

Abstract: Disclosed are a multi-channel electrochemical machining device and method for a blisk, and relate to the technical field of blisk electrochemical machining. The multi-channel electrochemical machining device for a blisk comprises an electrolytic bath used for accommodating an electrolyte, a blisk workpiece, a tube electrode and a top cover plate. The top cover plate is located above the blisk workpiece. An electrolysis chamber used for the tube electrode to electrolyze the blisk workpiece is formed between the lower surface of the top cover plate and the surface of the blisk workpiece. The electrolysis chamber communicates with the electrolytic bath. A drainage seam communicating the electrolysis chamber and the electrolytic bath along the axial direction of the blisk workpiece is formed in the upper surface of the top cover plate.

公开(公告)号：US20230036667A1

公开(公告)日：2023-02-02

申请号：US17872459

申请日：2022-07-25

Applicant: Nanjing University of Aeronautics and Astronautics

Inventor： Dengyong WANG ,  Guowei CUI ,  Zengwei ZHU ,  Di ZHU

IPC: B23H3/02 ,  B23H3/04

Abstract: The invention relates to the technical field of electrochemical machining and provides a pulse dynamic electrochemical machining apparatus and method for rapidly leveling a surface of a revolving part. During rotating pulse dynamic electrochemical machining, a cathode tool rotates around a center point of the cathode tool at a constant angular velocity, and an anode workpiece rotates around a center point of the anode workpiece at the constant angular velocity; meanwhile, the cathode tool performs a feed movement at a set feed velocity along a center line of the cathode tool and the anode workpiece. A control system determines a machining voltage value output by a power source when each contour point of the anode workpiece rotates to a machining area to automatically change an applied voltage between the cathode tool and the anode workpiece.