Material diameter detection device of straightening machine

The utility model relates to the technical field of material straightening. The utility model further discloses a material diameter detection device of the straightening machine. Workbench, the upperend of the workbench is connected with three uniformly distributed measuring mechanisms. Each measuring mechanism comprises an L-shaped plate, a first threaded rod and a measuring ruler. The lower endof the L-shaped plate is fixedly connected with the upper end of the workbench; a measuring block is arranged above the horizontal portion of the L-shaped plate, the lower end of the measuring blockis fixedly connected with a movable block, the movable block is connected with a fixing mechanism and connected with the measuring ruler through the fixing mechanism, a cavity is formed in the horizontal portion of the L-shaped plate, and an opening matched with the measuring ruler is formed in the upper side wall of the cavity. According to the utility model, a plurality of positions of a material can be rapidly and accura