Double disc grinding wheel application problems and solutions to the whole analysis

The grinding wheels of double disc grinding may encounter a variety of problems in their applications, which may involve a variety of aspects such as the selection of grinding wheels, the operation of the grinding process, the use of coolant, and the condition of the machine tool. For these problems, the following are some specific solutions and recommendations:

First, the grinding wheel selection and dressing problems

Improper selection of grinding wheel hardness

Problem performance: grinding wheel too hard or too soft may lead to poor processing results, such as grinding wheel wear too quickly or poor surface quality of the workpiece.

Solution: According to the processing materials and processing requirements, select the appropriate hardness of the grinding wheel. If the grinding wheel is too hard, try to replace the grinding wheel with a slightly lower hardness; if the grinding wheel is too soft, choose a slightly higher hardness grinding wheel.

Inadequate grinding wheel dressing

Problem: The surface of the grinding wheel is not flat, resulting in a large surface roughness of the processed workpiece.

Solution: Regularly use CBN grinding wheel dresser to dress the grinding wheel to ensure that the surface of the grinding wheel is flat. If the effect of the dresser is not good, consider replacing the new dresser.

Second, the operation of the grinding process

Excessive feed

Problem performance: When the feed amount is too large, the contact pressure between the grinding wheel and the workpiece is large, which is easy to lead to faster wear of the grinding wheel and burns on the surface of the workpiece.

Solution: Appropriately reduce the amount of feed, reduce the contact pressure between the grinding wheel and the workpiece, in order to extend the life of the grinding wheel and improve the surface quality of the workpiece.

Improper use of coolant

Problem: The direction of the coolant nozzle is not right or the flow rate is not enough, which leads to overheating of the grinding wheel and workpiece, affecting the processing effect and the life of the grinding wheel.

Solution: Adjust the direction of the coolant nozzle to ensure that the coolant can fully cover the grinding wheel and workpiece contact area; at the same time, increase the flow of coolant to improve the cooling effect.

Third, the state of the machine tool

Machine vibration

Problem performance: machine vibration will affect the stability of the relative position of the grinding wheel and the workpiece, resulting in a decline in machining accuracy.

Solution: Check the vibration of the double disc grinding and the surrounding environment, to exclude the factors that cause vibration. If there is a problem with the machine itself, professional maintenance is required.

Fourth, other common problems and solutions

Coolant filtration is not clean

Problem performance: impurities in the coolant will block the nozzle and pipe, affecting the cooling effect.

Solution: Regularly check and clean the coolant filtration system to ensure that the coolant is clean and free of impurities.

Grinding wheel size mismatch

Problems: grinding wheel size and processing requirements do not match, will affect the processing efficiency and surface quality of the workpiece.

Solution: Select the appropriate grinding wheel particle size according to the processing requirements to ensure that the processing effect meets expectations.

In summary, the double disc grinding wheel encountered in the application of a variety of problems, but most of the problems can be solved through a reasonable selection of grinding wheels, adequate grinding wheel dressing, appropriate grinding operation, effective use of coolant and good machine condition. In practice, close attention should be paid to the various changes in the machining process, and problems should be found and solved in time to ensure the quality and efficiency of machining.