US 12,134,158 B2
Electro-hydraulic combined system used for electro machining and supporting automatic tool changing
Lin Gu, Shanghai (CN); and Guojian He, Shanghai (CN)
Filed by Shanghai Jiao Tong University, Shanghai (CN)
Filed on Nov. 17, 2021, as Appl. No. 17/528,281.
Claims priority of application No. 202011293236.0 (CN), filed on Nov. 18, 2020.
Prior Publication US 2022/0176505 A1, Jun. 9, 2022
Int. Cl. B23H 7/26 (2006.01); B23H 1/02 (2006.01); B23H 1/10 (2006.01); B23H 5/04 (2006.01); B23Q 3/155 (2006.01)
CPC B23Q 3/1554 (2013.01) [B23H 1/02 (2013.01); B23H 1/10 (2013.01); B23H 2400/00 (2013.01); B23H 2500/00 (2013.01); B23Q 2003/155411 (2016.11); Y10S 483/902 (2013.01); Y10T 483/17 (2015.01); Y10T 483/1882 (2015.01)] 7 Claims
OG exemplary drawing
 
1. An electro-hydraulic joint system for electrical machining, which system is configured for supporting automatic tool changing, the system comprising:
an electro-hydraulic joint supplying device for supplying an electro-hydraulic joint; and
a clamping device,
wherein the electro-hydraulic joint supplying device comprises:
an insulator,
an electro-hydraulic joint supplying base,
an electro-hydraulic joint supplying pipe terminal, and
an electro-hydraulic joint supplying pipe;
the insulator is fixedly connected with a spindle shell or with a spindle seat of a machine tool spindle so as to be non-rotatable with respect to the spindle shell or spindle seat;
a top end of the electro-hydraulic joint supplying base is fixedly connected with the insulator;
a working fluid pipe connector and a wiring post are arranged on the electro-hydraulic joint supplying base;
a bottom end of the electro-hydraulic joint supplying base is provided with a terminal connector;
the working fluid pipe connector and the terminal connector each communicate with a fluid runner channel that is in the electro-hydraulic joint supplying base;
when the terminal connector is in a snap-fit with a top end of the electro-hydraulic joint supplying pipe terminal, the fluid runner channel in the electro-hydraulic joint supplying base communicates with a fluid runner channel that is in the electro-hydraulic joint supplying pipe terminal;
the fluid runner channel in the electro-hydraulic joint supplying pipe terminal further communicates with a flushing fluid container of an electrical machining electrode shank via the electro-hydraulic joint supplying pipe;
the wiring post, the electro-hydraulic joint supplying base, the electro-hydraulic joint supplying pipe terminal, the electro-hydraulic joint supplying pipe, and the electrical machining electrode shank are all conductive and configured to conduct electricity;
the electrical machining electrode shank and the spindle are electrically insulated from each other;
the clamping device comprises: (i) a first clamping mechanism arranged at a clamping end of a tool changing mechanical arm, and (ii) a second clamping mechanism arranged on a a tool magazine;
the first clamping mechanism or the second clamping mechanism is selectively fixedly connected to a cooperation mechanism that is on an outer side wall of the flushing fluid container to circumferentially limit the flushing fluid container;
the working fluid pipe connector, the electro-hydraulic joint supplying base, the terminal connector, the electro-hydraulic joint supplying pipe terminal, the electro-hydraulic joint supplying pipe, and a liquid channel in the electrical machining electrode shank jointly form a working fluid channel;
the wiring post, the electro-hydraulic joint supplying base, the terminal connector, the electro-hydraulic joint supplying pipe terminal, the electro-hydraulic joint supplying pipe, the electrical machining electrode shank, and an electrode attached to the electrical machining electrode shank jointly form an electric conduction channel; and
the electro-hydraulic joint supplying device is simultaneously configured as the working fluid channel and the electric conduction channel.