Tool life and cutting parameters are closely related. In the development of cutting parameters, first choose the right tool life, tool life and reasonable goal should be based on the optimization. Two general points lifetime maximum productivity and minimum cost cutter tool life, the former based on a single piece of work targeting the least, which is determined based on the lowest cost process goals.
When you select the tool life can consider the following points based on the complexity of the tool, the cost of manufacturing and sharpening to choose. Complex and high precision tool life should be selected higher than the single-blade cutter. For machine folder indexable cutting tools, tool change due to a short time, in order to give full play to their cutting performance, increase productivity and tool life alternative to a low level, and generally 15-30min. For loaded knife, tool change and tune complex multi-tool knife machine tools, combined machine tools and automated processing tools, tool life should be chosen to be higher, in particular, should ensure the reliability of the tool. Within a process plant productivity limits the increase in productivity of the entire plant, the tool life of the process should be lower when the election was a step in the unit time to share the whole plant expenditure m is large, the tool life should also be selected was lower. When finishing large, in order to ensure complete at least one pass, avoiding cutting halfway ATC tool life should be part accuracy and surface roughness to determine. Compared with ordinary machining method, CNC machining tool proposed for higher demand, not only need Gang offerings, high precision, and require dimensional stability, high durability, breaking and exclusive performance altar also requires easy to install, so to CNC machine tools to meet the requirements of high efficiency. CNC machine tool of choice is often used for high-speed cutting tool materials (such as high-speed steel, ultra-fine-grained carbide) and use the indexable insert.
