CNC CNC POLYGONAL HOLE PROCESSING DEVICE AND CNC MACHINE TOOL WITH THE SAME

摘要

The present invention relates to a polygonal hole processing device for a CNC machine tool, and a CNC machine tool including the same. A belt driving method is employed instead of a helical gear to transfer power to a cutting tool to polish an inner surface of a polygonal hole; is possible to lengthen a main body without adding a burden to weight as well as reducing costs; is possible to extend a hole processing length; and is possible to process a micro-hole. According to the present invention, the polygonal hole processing device for the CNC machining tool comprises: a hollow main body attached longitudinally in a cantilever shape to a tool base of the CNC machining tool capable of moving horizontally and vertically providing driving power of a motor and being able to be inserted into a polygonal hole of a workpiece; a spindle installed to rotate on a front end portion of the main body; a cutter attached to the spindle, processing the inner surface of the workpiece while rotating together at the time of rotation of the spindle; and a driving belt which connects the spindle to a rotation shaft connected to the motor provided in the tool base, and rotating to transfer driving power to rotate the cutter.