What are the several criteria that affect tool selection?
Although the tools used in machining look the same, they should be selected according to the actual situation when they are used. Generally speaking, there are many factors that affect the selection of tools. Generally speaking, they can be roughly divided into the following standards :
What are the several criteria that affect tool selection?
1. Workpiece material
There are various workpiece materials, and the tool materials are roughly high-speed steel, cemented carbide, ceramic and diamond. Different workpiece materials must choose suitable tool materials to achieve endless and maximize economic benefits.
2, machine tool type
High speed and high rigidity machine tools should be equipped with tools with high hardness and good toughness, such as cbn tools. Such tools are suitable for high-speed cutting and can give full play to the advantages of machine tools. Under the condition that the rigidity of the workpiece system and the tool system can be guaranteed, high-productivity tools, such as high-speed cutting tools and large-feed tools, are used.
3, CNC machining plan
Different CNC machining programs can use different types of tools. For example, drilling and reaming can be used for hole processing, or drilling and boring tools can be used for processing.
4, the size and shape of the workpiece
The size and shape of the workpiece also affect the selection of tool types and specifications. For example, special tools must be used to process special-shaped surfaces.
5, processing surface roughness
The surface roughness of the machined surface affects the structure shape and cutting amount of the tool. For example, rough milling cutters can be used for rough milling, and fine-tooth milling cutters are best for fine milling.
6. Machining accuracy
Machining accuracy affects the type and structure of the finishing tool. For example, the final machining of the hole can be processed by drilling, reaming, reaming or boring according to the accuracy of the hole.
There is also the nature of production. The nature of production mentioned here refers to the batch size of parts, which mainly considers the impact on tool selection from the processing cost. Generally, custom-made tools are mainly used in mass production, so it may be cost-effective from the perspective of cost. In single or small batch production, it is more suitable to choose standard tools with strong versatility.
