Four steps grinding skills of surface grinder

1. Extra long workpiece grinding steps

This kind of workpiece has a large grinding area, high calorific value during processing and is easy to deform. Therefore, it is necessary to pay attention to roughing and select the direction of cutting steps. When finishing, it is also necessary to pay attention not to grind the side and bottom at the same time. Use the coarse sand wheel to lie down and grind one surface, and then stand up to grind the other surface. Try to avoid grinding with the side of the grinding wheel, Zui and then change the fine grinding wheel to clear the angle.

2. Grinding steps for small workpieces

Small workpieces often encounter steps of only 0.1mm or even 0.05mm. Grinding such steps is casual for imprecise processing. For precision parts, it is necessary to clear the corners. In the design, it is generally indicated that it is necessary to clear the corners so that R is less than 0.03mm. No matter how small the steps are, they should come out straight. Even if there are only a few wires, the general materials can be achieved by 120K corner cleaning for 3-5 times, It is troublesome for materials with particularly high hardness, such as DC53, skh-9 and other materials. It is necessary to use a finer grinding wheel, such as 360K, to clear the angle, and the number of times needs to be increased accordingly. If you check the size of R, experienced masters can check it by projection after a short time based on feeling and experience. You will know it after projection for several times.

3. Step with R

This situation is also very common. It should be noted that when the surface grinder is rough, it needs to leave the position of R to open a step. When it is refined, it can be repaired directly in place.

4. Four steps

For this type of workpiece, it is necessary to reserve a certain process table on each surface, which is called standing foot in some places. Otherwise, there will be no support point when grinding the steps of the surface grinder, and there is the possibility of deformation. There is no need to leave too much process table, 0.7-2mm can be used, which is convenient to remove the process table without deformation.