Positioning jig

The embodiment of the utility model discloses a positioning jig, which utilizes a pressing part and a bearing part of a clamping assembly to clamp a positioned piece, and then utilizes a locking part to lock the relative positions of the pressing part and the bearing part, so as to ensure that the positioned piece can be stably fixed on the clamping assembly. Therefore, on one hand, the rotating plane of the pressing part and the rotating plane of the locking part are configured to be perpendicular to each other, it is guaranteed that after the pressing part conducts pressing operation, the locking part can effectively lock the pressing part through contact with the pressing part, and the pressing part is prevented from being opened easily. And meanwhile, the clamping operation of the clamping assembly on the positioned part is simplified. And on the other hand, through the arrangement of the relative positions of the positioning groove and the material groove in the carrying table, it is further guaranteed t