Three-sided cutter, can be divided into straight-tooth three-sided blade and wrong tooth three-sided blade. It is mainly used in the horizontal milling machine step surface and one or both ends through the shallow groove. In addition to the three-sided edge cutter with the main cutting edge, the two sides also have deputy cutting edge, thereby improving the cutting conditions, improve the cutting efficiency and reduce the surface roughness value. However, after resharpening the width of the larger changes, three-sided inserts cutter can solve this problem.
