Clamping jig for shell of semiconductor part

The utility model relates to a clamping jig for a semiconductor part shell. The clamping jig comprises a base block, a threaded cylinder and a positioning restraint frame, the threaded cylinder is located in a center hole in the base block and is in a cylindrical shape, and an internal thread is arranged in the threaded cylinder. The top end face of the base block is a plane. A dovetail groove is formed in the top end of the base block, and the positioning restraint frame is located in the dovetail groove; the positioning restraint frame comprises a sliding block part, a restraint part and a top positioning part; an upper locking screw is arranged on the top positioning part, a lower locking screw is arranged on the sliding block part, and the lower locking screw corresponds to a screw hole in the dovetail groove. According to the utility model, a shell workpiece of a semiconductor part with a threaded pipe structure at the bottom can be positioned and clamped, and the clamping mechanism does not interfere wi