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.