Electro-hydraulic combined device

An electro-hydraulic combined device, comprising an electrical insulator, an electro-hydraulic joint supply base, a terminal of electro-hydraulic joint supply pipes, and the electro-hydraulic joint supply pipes, wherein the electrical insulator is fixedly connected with a spindle shell or a spindle seat of a spindle of a machine tool;

• a top end of the electro-hydraulic joint supply base is fixedly connected with the electrical insulator;
• a connection port of a working fluid supplying pipe and a binding post are arranged on the electro-hydraulic joint supply base;
• a bottom end of the electro-hydraulic joint supply base is provided with a terminal connection port;
• the connection port of the working fluid supplying pipe and the terminal connection port are communicated with a first fluid channel in the electro-hydraulic joint supply base;
• when the terminal connection port is snap-engaged with a top end of the terminal of the electro-hydraulic joint supply pipes, the first fluid channel in the electro-hydraulic joint supply base is communicated with a second fluid channel in the terminal;
• the second fluid channel in the terminal is further communicated with a flushing fluid container on an electrode shank for electro machining through the electro-hydraulic joint supply pipes;
• the binding post, the electro-hydraulic joint supply base, the terminal, the electro-hydraulic joint supply pipes, and the electrode shank for electro-machining are conductive and electrically conducted;
• the electrode shank for electro machining and a connection port of a spindle shank are insulated from each other;
• by an insulation layer therebetween;
• the connection port of the working fluid supplying pipe, the first fluid channel in the electro-hydraulic joint supply base, the terminal connection port, the second fluid channel in the terminal, the electro-hydraulic joint supply pipes, and a third fluid channel in the electrode shank for electro machining jointly form a working fluid channel;
• the connection port of the working fluid supplying pipe, the electro-hydraulic joint supply base, the terminal connection port, the terminal, the electro-hydraulic joint supply pipes, the electrode shank for electro machining, and an electrode jointly form an electric conduction channel;
• the electro-hydraulic combined device serves as a fluid passage and an electric conduction channel.