Angular positioning combination device for drilling tool to machine tooth holes

The utility model discloses an angular positioning combination device for a drilling tool to process a tooth hole, which comprises a chuck for processing and fixing the drilling tool, the lower end of the chuck is arranged at the rotating end of a turntable, and a directional key matched with a groove on the side surface of a workpiece is arranged on one side of the workpiece clamped on the chuck. Firstly, a workpiece needing to be machined is placed on a chuck through a feeding part, then the workpiece is clamped and positioned through the chuck, after clamping, a linear module drives a connecting column to move towards the position of the workpiece, and when the connecting column moves to a set moving distance, after moving is completed and a sensor does not receive a signal, the workpiece is clamped and positioned through the chuck. When the sensor receives a signal, the chuck slowly rotates by an angle of a tooth until the directional key can be moved into the side groove of the workpiece, and then the li