Straightening device for machining and producing copper bars

The invention discloses a straightening device for machining and producing copper bars. The straightening device comprises a base, a lubricating mechanism, a fixing mechanism and a damping mechanism,wherein a supporting plate is arranged on the surface of the top end of the base; a rotating shaft is arranged on one side surface of the supporting plate; the rotating shaft penetrates through the supporting plate and is rotationally connected with the supporting plate; the lubricating mechanism is located at a joint of the supporting plate and the rotating shaft; the lubricating mechanism comprises a mounting groove; the mounting groove is formed in one side surface of the supporting plate; a mounting sleeve is arranged in the mounting groove; and a sliding block is fixedly connected to oneside surface of the mounting sleeve. Through the arranged mounting groove, the surface of the rotating shaft can be conveniently and quickly lubricated, so that the service life of the rotating shaftis prolonged, and the strai