Abstract

The woodworking is based on a trinomial machine/piece/tool. For maximum quality of the manufactured piece, it is important not to separate this trinomial. But the limited life of tools prevents that permanent contact. This phenomenon is due to the wear of the cutting parts of the tools. The perception of wear is based on two methods. The first is to anticipate the end point of tool wear, changing these at fixed period, no matter what. The other school is to recognize the tool wear at the event: the tools are changed once they are really worn out, finding faults on manufactured parts. A worn tool generates pieces with non-compliant quality or even unusable. A deeper understanding of wear and its consequences would change the tool at the right time. The tool wear for wood is due to several phenomena interacting with each other. Firstly, the first dominating phenomenon consists of a corrosive attack decreases the mechanical strength of the surface, then an abrasive attack whose work is facilitated by the reduced resistance of the surface. Then repeated shocks or occasional involved in the degradation of the cutting edge, temperature acting as amplifier wear. Then, understanding of the wear patterns can characterize the life of tools by wear measurement, to find ways to extend this period with development of tools coatings, while maintaining optimal conditions for woodworking to get the best finish surface.