What's the name of the fitter punch?

The assembler's drilling machine is called drilling machine or drilling machine. It is a machine tool for punching holes in metals, wood and other materials, which can drill holes with different diameters and depths on the workpiece. Drilling machine usually consists of motor, transmission device, transmission belt, drill bit and other parts. During operation, the drill bit is placed on the workpiece by manually or automatically adjusting the position and speed of the cutter, and appropriate pressure is applied to make the drill bit rotate and drill holes along the surface of the workpiece.