Rotary workbench of three-dimensional scanning system

The invention relates to a rotary workbench of a three-dimensional scanning system. The rotary workbench comprises an annular substrate, and a scale indication block is arranged on the outer surface of the annular substrate; a contact switch is arranged at the lower part of the inner wall of the annular substrate; an annular boss is arranged at the upper part of the inner wall of the annular substrate; the annular boss is connected with a rotary table through a roller pin; the rotary table is of a hollow circular ring structure; a groove is formed in the outer side surface of the rotary table; a circular workbench is connected on the upper surface of the rotary table through a bolt; a graduated scale is arranged on the circumference of the side surface of the circular workbench; the lower surface of the rotary table is connected with a gear ring; the gear ring meshes with a drive rod; the drive rod is connected with a micromotor; and a touch rod is arranged on the edge of the lower surface of the rotary table