Lathe hydraulic pressure expands and overlaps anchor clamps

The utility model provides a lathe hydraulic pressure expands and overlaps anchor clamps, including the lathe spindle, the main shaft afterbody is equipped with the angling cylinder, and ann has the pull rod on the piston rod of angling cylinder, and it has the connection pad to pacify on the main shaft, the downthehole ann of connection pad has the bloated cover of opening, is equipped with bloated core in the taper hole in the opening expands and overlaps, and bloated core passes through lock washer and anti -loosening screw and pull rod fixed connection, preferably, the opening expands to sheathe in and is equipped with a plurality of open slots. The utility model discloses positioning accuracy is high, and the work piece warp for a short time, and coaxiality error is little between this process's excircle, hole and the locating hole, and is more obvious to thin wall part effect. 本实用新型提供了种车床液压胀套夹具，包括车床主轴，主轴尾部设有回转油缸，回转油缸的活塞杆上安有拉杆，主轴上安有连接盘，所述连接盘的孔内安有开口胀套，开口胀套内锥孔内设有胀芯，胀芯通过防松垫圈和防松螺钉与拉杆固定连接；优选的，所述开口胀套上设有多个开口槽。本