Multi-column machine vision lighting support

The utility model relates to the field of supports, in particular to a multi-stand-column type machine vision polishing support, scales are arranged on the surfaces of stand columns, external threads are arranged at one ends of the stand columns, internal threads used for being connected with the external threads are arranged at the other ends of the stand columns and the surface of a bottom plate, a transverse rod and vertical rods are arranged on the sides of the stand columns, and the vertical rods are installed at the two ends of the transverse rod. A light-transmitting plate is installed on the bottom face of the vertical rod, a long-strip-shaped groove hole and a long-strip-shaped hole are formed in the surface of the transverse rod and the surface of the vertical rod respectively, the vertical rod can slide along the long-strip-shaped groove hole, the transverse rod and the vertical rod are connected through a hand-turning screw, the transverse rod and the stand column are connected through a cylindric