Precise and adjustable positioning reference conversion clamp for flexible automatic production line

The utility model provides a precise and adjustable positioning reference conversion clamp for a flexible automatic production line, which is used for converting the positioning reference conversion when the mode that an inner hole of a part is positioned and clamped in an elastic expansion sleeve on a follow fixture is converted into the mode that an outer circle of the part is positioned and clamped on the follow fixture. The positioning reference conversion clamp comprises a base, a positioning block, a locking block and an outer ring, after the part is positioned and clamped on the positioning block of the positioning reference conversion clamp, the locking block pushes the outer circle of the part arranged in the positioning groove hole to the positioning groove hole to be positioned and locked, and the axis of the outer circle of the part is coaxial with the axis of a center hole of the base. According to the scheme, the fixture conversion scheme for converting inner hole positioning into outer circle p