Three methods to reduce mold processing defects

Mold processing refers to the processing of forming and blank making tools. In addition, it also includes shear molds and die-cutting molds. Defects sometimes occur during mold processing. Let's talk about some small methods to reduce mold processing defects.

1. Reasonably use cooling and lubricating fluid, give play to the three functions of cooling, washing and lubrication, and keep the cooling and lubrication clean, so as to control the grinding heat within the allowable range, so as to prevent the thermal deformation of the workpiece. Improve the cooling conditions during grinding, such as oil immersed grinding wheel or internal cooling grinding wheel. When the cutting fluid is introduced into the center of the grinding wheel, the cutting fluid can directly enter the grinding area to play an effective cooling role and prevent workpiece surface burns.

2. Select the grinding quantity reasonably, and adopt the fine grinding method with small radial feed, or even fine grinding. If the radial feed rate and grinding wheel speed are properly reduced and the axial feed rate is increased, the contact area between grinding wheel and workpiece is reduced and the heat dissipation conditions are improved, so as to effectively control the increase of surface temperature.

3. Reasonably select and trim the grinding wheel. The white corundum grinding wheel is better. Its performance is hard and brittle, and it is easy to produce new cutting edges. Therefore, the cutting force is small and the grinding heat is small. It is better to use medium particle size in particle size, such as 46 ~ 60 mesh. Medium soft and soft (ZR1, Zr2 and R1, R2) in wheel hardness, that is, the coarse particle size and low hardness grinding wheel has good self excitation, which can reduce the cutting heat.