The cause and solution of burr in grinding process (3)

The machining parameters in the grinding process also have an important effect on the generation of burrs. The following is a detailed analysis from the dimensions, accuracy, surface quality and so on.

1. Size: The size of the grinding wheel affects the area of the grinding zone and the degree of heat accumulation, which in turn affects the generation of burrs. Under normal circumstances, the size of the grinding wheel should be adapted to the size of the workpiece.

2. Accuracy: The requirements of grinding accuracy are different, and the required processing parameters will be different.

In addition to grinding wheels, processing conditions and processing parameters, there are a number of other factors that also affect the production of burrs during grinding.

Workpiece material: Physical properties such as hardness, toughness and thermal conductivity of workpiece materials will affect the grinding process, which in turn affects the generation of burrs. For materials with high hardness and good toughness, cracks and burrs are easy to appear during grinding. For materials with low thermal conductivity, it is easy to produce thermal damage and burrs during grinding. Therefore, it is necessary to select the appropriate grinding parameters and grinding wheels according to the nature of the material to reduce the generation of burrs.

Grinding wheel dressing: grinding wheel dressing is an important work in the grinding process, the poor dressing state of the grinding wheel will lead to the surface of the grinding wheel convex or concave, and then produce burr. Therefore, it is necessary to regularly dress the grinding wheel to ensure the smoothness and roughness of the grinding wheel surface.

Cooling method: The cooling method in the grinding process also has an effect on the generation of burrs. The suitable cooling method can effectively reduce the temperature of the grinding zone and reduce the burrs on the workpiece surface. For example, the use of high-pressure cooling, spray cooling and other methods can effectively improve the cooling effect.

Operator skills: The skill level of the operator is also an important factor affecting the generation of burrs. The operator needs to have skills and experience to be able to select the appropriate grinding wheel, processing conditions and processing parameters according to the actual situation to reduce the generation of burrs.