Flexible quick-changing locating device

The utility model discloses a flexible quick-changing locating device, which is used for flexible production of multi-variety steering knuckles. The device is characterized in that a fixture body is fixed with a flatten through a key and a bolt, the fixture body is provided with a side face locating plate and a front surface locating plate, the side face locating plate and the front surface locating plate are connected with the fixture body and an angle plate through bolts respectively, the angle plate is connected with the fixture body through a bolt, a locating disc is located through a locating pin and a seam allowance of the angle plate and is fixed on the angle plate by a bolt, a workpiece is located on the locating disc through a locating pin and a seam allowance of the locating disc and is compacted by a pressing block, the pressing block is fixed on a connecting rod by a bolt, the connecting rod is connected with an oil cylinder push rod through a bolt, and the oil cylinder push rod controls the press