Electrochemical layer-by-layer polishing device for additive manufacturing metal tubular part

The invention discloses an electrochemical layer-by-layer polishing device for an additive manufacturing metal tubular part, and relates to the technical field of precision surface treatment. The electrochemical layer-by-layer polishing device mainly comprises a control driving part, a power supply, an electrode and a working solution; during working, an additive manufacturing metal tubular part to be polished is placed at a set position, the electrode extends to the inner part of the additive manufacturing metal tubular part; the anode of the power supply is connected with the additive manufacturing metal tubular part, the cathode of the power supply is connected with the electrode; and the control driving part is connected with the electrode and/or the additive manufacturing metal tubular part, the control driving part is used for controlling the fact that relative movement of the electrode and the additive manufacturing metal tubular part is carried out so that the electrode, the additive manufacturing met