Effect of micro textures on the cutting performance of circular saw blade

摘要

In this paper, linear micro textures that parallel to the sawtooth edge were fabricated on the surface of the high-speed steel W6Mo5Cr4V2 circular saw blade by laser engraving. Furthermore, cutting performance of micro textured circular saw blade (TCS) and traditional circular saw blade (CS), including sawing arc length, sawing force, sawing temperature, machined surface roughness, and wear mechanism, were investigated in sawing 304 stainless steel pipes under the cutting fluid condition. Results showed that the largest sawing arc length and sawing force were occurred on the circular saw blade sawing outward from the inner wall. In addition, TCS exhibited better cutting performance mainly due to the following two aspects, on the one hand, the effective sawtooth-chip contact length was reduced due to the micro textures fabricated on the sawtooth surface; on the other hand, cutting fluid can be better penetrated into the micro textures and formed stable lubrication film in sawtooth-chip contact interface.