The number of blades of a round insert has a great influence on the cutting result. The number of edges refers to the number of teeth on the cutting edge of a round insert. The higher the number of blades in the insert, the better the cutting result will usually be.
First of all, the increase in the number of edges can increase the area where the blade is in contact with the workpiece. When the number of blades increases, so does the cutting area of the insert. This allows the cutting force to be evenly distributed over a larger contact surface, thereby reducing the local pressure between the insert and the workpiece, reducing the deformation of the workpiece and the wear of the insert.
Secondly, the increase in the number of flutes can improve the cutting efficiency. With less work time per tooth, each tooth can complete the process of plunging, cutting, and exiting faster. This can speed up the cutting speed and improve the cutting efficiency.
In addition, the increase in the number of flutes can improve the stability of the blade. When the number of blades increases, the gap between the teeth decreases accordingly. This can effectively reduce the vibration and resonance of the insert, improve the stiffness and stability of the tool, and reduce the vibration and noise during the cutting process.
In addition, the increase in the number of flutes can improve the heat dissipation performance of the blade. As the cutting area increases due to the increase in the number of flutes, the friction between the insert and the workpiece also increases. This effectively disperses the heat generated during the cutting process, reduces the increase in insert temperature, and prolongs the service life of the tool.
However, it should be noted that an increase in the number of edges will also lead to an increase in cutting force. As the number of blades increases, so does the cutting force per edge. This increases the cutting force of the entire tooling system, and the requirements for the structure and performance of the cutting machine and tool increase accordingly. In addition, the increase in the number of edges also increases the production cost of the tool, which involves the cost of edge machining, edge grinding and edge repair.