Milling cutting tool having a double sides cutting insert

And the cutting insert part formed pickled on both sides (兩面), the cutting insert is, by easily with a cutter body at least one insert seat is formed to be coupled, to extend the service life of the cutting insert and the cutter body and the processing surface roughness and the cutting efficiency to a milling cutting tool applying a double-sided type cutting insert it is disclosed for maximizing. Cutting tool according to the present invention, the sides at the edge side and the edge side opposite sides connecting the top surface and a side surface and an adjacent side surface connecting the bottom surface and an upper surface and a lower surface having a symmetrical shape, while in parallel to the top surface and a corner portion made of a side connecting the sides, a top surface and a bottom surface edge, the cutting insert is formed and a subsection of this subsection of the corner is pickled for connecting the main clause and the main clause and a subsection of between formation; In one chip pocket portion and the seat side which is precipitated in a direction opposite to the chip pockets, and a sheet that is hit not the sheet facing the chip pockets formed in the one side of the seat side parts of the sheet side is further sheet side adjacent and is formed at a right angle, the sheet is not hit, the connection with the circular opening formed in the cutting insert, a circular opening a ball seat screw that screw fastening through-formed to the seat side to tooth meets the edge portion, not the sheet side of the sheet is corner portions meeting formed, and a cutter body, which recess grooves are formed.