Positioning and clamping tool for supporting rod base workpiece

The utility model relates to a supporting rod base workpiece positioning and clamping tool which comprises a base, a positioning column, a screw rod, a positioning pressing ring and a positioning seat. A center table is arranged on the upper end face of the base, the positioning column is vertically arranged on the upper end face of the center table, a radial positioning sleeve is arranged on the periphery of the positioning column, and the radial positioning sleeve is detachably connected with the positioning column. The screw rod is located at the top end of the positioning column, a nut is arranged on the screw rod, the positioning pressing ring is arranged on the screw rod in a sleeving mode and located below the nut, and an inclined wall positioning ring is arranged at the bottom end of the positioning pressing ring; the positioning seat is located on the center table, and a positioning groove and a locking screw are arranged on the positioning seat. According to the positioning and clamping tool for the