| abstract |
Disclosed is a cutting tool capable of improving cutting performance and productivity. A cutting tool according to the present invention is a rake having a surface texture having a concavo-convex pattern on at least a part of a contact surface on which chips of a work material generated by cutting with a cutting edge at a tip can come into contact. The present invention relates to a cutting tool having a surface. The surface texture according to the present invention has recesses intermittent in the chip discharge direction, and the chip contact area ratio, which is the area ratio of the remaining surface excluding the recesses from the entire surface texture to the entire surface texture, is 9 to 90%. It is characterized by that. There is a dot-type texture as such a surface texture, and it is formed by using, for example, a nanosecond pulse laser. When cutting is performed using the cutting tool of the present invention, the cutting resistance force such as the main component force and the back component force can be greatly reduced, and relatively thin chips can be efficiently discharged. [Selection] Figure 13B |