Non standard tool material, tool structure and tool geometry are the three major requirements to determine the cutting performance of non-standard tool, and the performance of non-standard tool material plays a key role. The 20th century is a historical period of great development of cutting tool materials. The emergence and application of various difficult to machine materials, the development and application of manufacturing system, high-speed cutting, ultra precision machining and green manufacturing put forward higher and newer requirements for cutting tools. It is predicted that the cutting process will not decline in a long time to come, and the cutting tools and tool materials will have a new development. Tool material has a great impact on tool life, processing efficiency, processing quality and processing cost, so we should pay attention to the correct selection and reasonable selection of tool materials.
The production of non-standard tools in the process of mechanical processing often encounter some difficult to use standard tools for processing, so the production of non-standard tools is important for mechanical cutting. The use of non-standard cutting tools in metal cutting is common in milling, so the production of non-standard cutting tools in milling is introduced. Because the standard cutting tool is aimed at the cutting of common metal or non-metallic parts with a wide range of areas, when the hardness of the workpiece increases due to overheating treatment, or the workpiece is easy to stick to the tool due to stainless steel, some workpiece surface geometry is complex, or the machined surface has high roughness requirements, etc., the standard tool can not meet the processing needs. Therefore, in the process of processing, it is necessary to design the material, geometric shape and geometric angle of the cutting tool, which can be divided into two categories: customized and non customized. Non customized tools mainly solve two problems: dimension and surface roughness.
