How does a surface grinder work? Surface grinders can smooth the metal surface to a completely flat and level state. This is an abrasive process that uses a high-speed rotation of the grinding wheel to grind the difference in height. Grinding wheels are usually made of composite materials. The composite material is usually some rough or coarse aggregate that is bonded to the cementitious matrix.
The two basic components of a surface grinder are a grinding wheel and a reciprocating or rotary table.
There is a work bed on the table that you can use to hold your workpiece. If it cannot be clamped for some reason, you can also use an electromagnet to hold the workpiece tightly.
After setting the workpiece, the height will be adjusted so that the workpiece is directly under the grinding wheel. When the grinding wheel reaches the required grinding speed, the table will start to move left and right, so that the table will be slightly lifted and the wheel will grind a part of the material. The workpiece is partially lifted for the next grinding. The table will also be moved in and out, so that the workpiece can be ground completely uniformly.
When performing surface grinding, you need to understand the relationship between the grinding wheel and the workpiece material. Cast iron and most steels tend to be well ground. However, other materials (such as aluminum, stainless steel, brass, and plastic) may become overheated and begin to corrode, or they may become embedded in the wheel. Both issues slow the process.
Grinding wheels don’t just have to be straight. In some cases, you may want to have a custom wheel profile because they give the selected pattern to the surface of the ground part. It is also known that surface grinding operators use straight grinding wheels and process patterns in them.
The accuracy of most surface grinders can reach ± 0.002mm. However, as you can imagine, this is a very time-consuming process. The movement of the table can be driven hydraulically or electrically. Most surface grinders also have some manual adjustment dials, but usually they are only used for initial setup. Most modern surface grinders are semi-automatic and can be programmed to grind to a certain depth with a certain number of passes. Once the grinder is set up, it usually requires very little operator intervention.
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