The invention more particularly blood are end mills and the end mills and the contact that is attached to the spindle rotation to the cutting process to fuse the electrical discharge machining, and mechanical milling in the form desired to avoid the workpiece relates to a hybrid cutting apparatus for cutting will by the positive electrode or negative electrode to the workpiece is respectively related to a plurality of the cutting blade and the mechanical milling and EDM is fused hybrid cutting device to the Home bottom surface between the cutting blade performing a mechanical cutting process and the discharging process are alternating .
To this end the present invention is mounted on the rotating spindle and the cutting end mills for machining a workpiece P; Work table and in which the workpiece is seated blood; A power supply that supplies power between the end mill and the workpiece so that the blood discharge processing performed between the end mills and avoid workpiece; Controlling a supply power is applied whether or not the power supply and control unit for controlling the clearance between the inspected workpiece and the end mill; jidoe comprises a, and a plurality of the cutting blade to which the end mill is protruding formed to twist in the axial direction, a plurality of cutting It made between the blade groove bottom surface which is formed with a groove type end mill in sequence a plurality of cutting edges in contact with the predetermined time intervals during the rotation portion cutting the workpiece P, and the groove bottom surface between the cutting blade is made to avoid electrical discharge machining the workpiece.