Automatic grooving device for numeric control bender

The invention relates to an automatic grooving device for a numeric control bender. The device comprises a bedplate arranged at the bottom, a group of profile brackets fixed on the bedplate, and a vertically downward saw blade, and is characterized by further comprising a lifting device and a rotating device; linear slide rails are fixedly arranged on the profile brackets respectively and are connected through a cross beam slide board; the rotating device is fixedly connected with the cross beam slide board; and the lifting device is movably connected with the cross beam slide board. The device provided by the invention can automatically groove according to the bending angle of a product and can automatically set and control the grooved angle and depth with the precision achieving 0.001 mm, so that the problems of non-uniformity of angles and uncontrollable factors of grooved depths of the previous manual grooving can be completely avoided, the product quality is improved, the production cycle is accelerated, and meanwhile, the product has an attractive appearance.