High-precision gear grinding clamp based on taper elastic positioning

The utility model discloses a high-precision gear grinding clamp based on taper elastic positioning. The high-precision gear grinding clamp comprises a tool mandrel, a taper elastic expansion sleeve, a pressing component and a connecting component. The tool core shaft is used for achieving accurate positioning between a machined workpiece and equipment. A taper elastic expansion sleeve arranged in an inner hole of the workpiece is in taper fit with the peripheral surface of the tool mandrel; the pressing part is installed at the top end of the tool mandrel, on one hand, a workpiece is attached to a protrusion of the tool mandrel, end face positioning of the workpiece is achieved, on the other hand, the taper elastic expansion sleeve is tightly matched with an inner ring of the workpiece, and radial positioning of the workpiece is achieved. The connecting part is used for connecting the tool mandrel and the equipment spindle to guarantee synchronous movement of the workpiece and the equipment spindle. The posi