High-precision long sleeve outer clamping turning clamp

The utility model relates to a high-precision long sleeve outer clamping turning clamp which comprises an upper conical head flange, a lower conical head flange and a double-cone rubber chuck, outer conical surfaces are formed at the upper end and the lower end of the double-cone rubber chuck respectively, and inner conical surfaces are formed on the upper conical head flange and the lower conical head flange respectively. The inner conical surface of the upper conical head flange and the inner conical surface of the lower conical head flange are attached to the outer conical surfaces of the upper end and the lower end of the double-cone rubber chuck respectively, and the upper conical head flange does axial linear motion relative to the lower conical head flange. The upper end and the lower end of the double-cone rubber chuck are driven by the upper cone head flange and the lower cone head flange respectively, so that the two ends of the double-cone rubber chuck can clamp a workpiece, the axial length of the