Chuck from direction centering centre gripping

The utility model discloses a chuck from direction centering centre gripping, characterized by, including chuck main part and power push rod unit, the top of chuck main part, bottom, right side are equipped with fixed orifices, toper direction through -hole, horizontal cylindricality hole respectively, and a perpendicular cylindricality aperture is connected to the up end of toper direction through -hole, and perpendicular cylindricality aperture does not nevertheless communicate with each other with the fixed orifices inside stretching into the chuck main part, horizontal cylindricality hole communicates with each other with perpendicular cylindricality aperture, power push rod unit includes power supply, push rod and briquetting, and the briquetting draws close with push rod left end face, and the push rod is connected with the power supply, and briquetting, push rod insert in the horizontal cylindricality hole in proper order. This kind of chuck can reach the work piece centering by self guidance, the work piece is got or abandons to this kind of chuck of while automatic clamp as required, this kind of chuck can improve work efficiency in processing, test by a wide margin, and is practical in batch processing, test procedure.