Address:Auto Parts Industrial Park, Jinji Town, Tianchang City, Anhui Province
Cause of tool wear in large gear machining
1 hard point wear
The workpiece material contains a hard point, which is higher than that of the tool material. In the process of cutting, the cutting tool will be cut out of the matrix of the soft matrix. In low speed cutting, hard point wear is the main reason of tool wear.
2 bond wear
The bonding point between the surface of the workpiece or the surface of the chip and the surface of the cutting tool, and the wear caused by the relative movement of the tool, which is caused by the particles of the cutting tool. Bond wear is related to the cutting temperature, and it is related to the affinity of the workpiece material and the tool material.
3 diffusion wear
At high temperature, the atoms of the elements in the workpiece material and tool material, which are compatible with each other, diffuse to each other, so that the chemical composition of the tool material is changed, and the cutting performance of the tool is weakened.
4 phase change wear
Cutting temperature is increased, and the change of microstructure of cutting tool material is achieved, which makes the wear of cutting tool hardness decrease. Such as high speed steel cutting tool, when the cutting temperature to achieve phase change temperature, the phase change wear, loss of cutting performance. There are other reasons for tool wear, such as oxidative wear, thermal chemical wear and electrochemical wear.
Because of the large gear processing, cutting temperature Nian Gao, tool wear faster, so the cutting temperature is the main reason of the tool wear.