Indexing device of automatic indexing tool

The utility model discloses an indexing device of an automatic indexing tool, which is characterized in that a linear cylinder drives a guide shaft to move in the horizontal direction, the guide shaft drives a connecting rod to move, the connecting rod drives a deflector rod to move along a guide square hole, an indexing bolt is inserted into or separated from a bolt hole of a tool ring, a proximity switch I and a proximity switch II act, and a signal is fed back to a controller; the controller controls the servo linear electric cylinder to act, drives the whole composed of the connecting base, the oil cylinder support and the linear cylinder to move, and drives the two cam bearings to move along the arc grooves in the sliding bases, so that the tool ring rotates by a certain angle, and the outer circle of the tool ring rotates by the distance between the centers of the two adjacent plug pin holes. After other parts of the automatic indexing tool act to clamp the workpiece, the servo linear electric cylinder