Nc drilling machine machining characteristic of nc drilling machine is the workpiece stationary, rotation of the cutting tool and feed along the axis direction, and numerical control bench drilling machine, numerical control vertical drilling machine and nc rocker arm drilling machine. This machine mainly is for the H section steel, square tube, channel steel and other material designed to the plane of the borehole drilling on the profile single plane for processing, has the very good flexible machining function, realizes the clamping porous processing can be done at a time. Processing precision high speed, is one of the profiles processing essential equipment.