Factors affecting the normal use of grinding wheels

2019-08-13 1374

What are the precautions during use to ensure the best grinding performance of the grinding wheel?

The speed of the grinding wheel

The label of the grinding wheel specifies the maximum working line speed. Before use, it is necessary to confirm whether the speed of the machine tool spindle is within the range of the grinding wheel's line speed. Sometimes only checking the motor speed of the machine tool is not enough, and it is also necessary to calculate the speed ratio of the belt pulley.

Some machine tools have stepwise speed regulation, and operators should be careful not to accidentally adjust the speed to a gear higher than the linear speed of the grinding wheel.

Standardization of operation

Sometimes, operators may not operate according to process requirements. For example, the prescribed feed quantity is 2 threads per time, while some operators aim to catch up with the production and achieve a feed quantity of 5 threads per time. This makes it difficult for the grinding wheel to work properly, and the workpiece is prone to burns. Some burn surfaces do not show blue burn marks, but in reality, the hardness of the workpiece has decreased, which greatly affects the quality of the workpiece.

Diamond trimmer

The normal line between the diamond pen and the grinding wheel should have an angle of 15 °. The diamond pen can rotate several faces to maintain sharpness for a long time. If the diamond pen becomes dull and does not need to be inspected or replaced, the grinding wheel is still being repaired. It can be imagined that the grinding quality will not be good.

Maintenance work of grinding machine

According to safety maintenance requirements, the machine tool needs to undergo regular maintenance. If regular maintenance work is not taken seriously in order to save costs, resulting in poor machine condition, such as decreased spindle accuracy or excessive bearing wear, it will have a very adverse impact on grinding.

Instability of processed workpieces

Mainly manifested in the instability of size allowance and significant fluctuations in heat treatment hardness.

Is the cooling system reliable

Sometimes users may report scratches on the surface of the workpiece, and besides impure abrasive particle size, the filtration of the cooling system is crucial. If the filtering is not good, the metal chips will be recycled to the grinding area, causing scratches on the surface of the workpiece. In addition, the adequacy of the coolant flow rate is also a direct factor affecting the grinding effect.

In addition, attention should be paid to the storage, handling, and installation of grinding wheels:

The storage of grinding wheels should pay attention to ventilation and moisture prevention, especially resin grinding wheels and rubber grinding wheels, and also pay attention to the issue of aging. Generally, the storage period of resin grinding wheels and rubber grinding wheels cannot exceed 2 years.

During transportation, we sometimes see workers rolling large grinding wheels on the ground, which can accidentally collide with other objects and cause missing corners of the grinding wheels. High speed operation of grinding wheels with missing corners poses great danger. So we should try our best to avoid non-standard handling.

During the installation process, it is also important to handle it carefully and tighten the nuts diagonally, from loose to tight, when tightening the flange.

The article originates from diamond grinding wheelsWww.jm nanhua.com