The invention provides a self-locking chuck and an
electrode slice connecting device, and the self-locking chuck does not get loose, and is safe in treatment, good in electrical
conductivity, low in cost and good in universality. The self-locking chuck comprises an upper cover, a lower cover and a turning plate; the upper cover and the lower cover are buckled and connected, a clamping channel is formed between the upper cover and the lower cover, a connecting shaft is fixedly arranged at the front end of the upper cover, a half open shaft sleeve is arranged in the eccentric position of the turning plate, a front protruding part and a rear protruding part are arranged at the lower part of the turning plate, the shaft sleeve is correspondingly arranged at the upper end of the rear protrudingpart, the connecting shaft is sleeved with the turning plate through the shaft sleeve, a
metal elastic sheet is arranged in the clamping channel, the lower end face of the
metal elastic sheet is abutted against the lower cover, the upper end face of the
metal elastic sheet is abutted against the rear protruding part and the upper cover respectively, and a wire extending outwards is arranged on the rear part of the metal elastic sheet. The
electrode slice connecting device comprises an
electrode slice and the self-locking chuck; the electrode slice comprises an electric conduction main body, atransition section and an extending end; the extending end is connected with the electric conduction main body through the transition section, and the front end of the transition section and the extending end are arranged in the clamping channel.