A Brief Overview of How a Surface Grinder Works
The common term for all types of mechanical grinding methods is ‘surface grinding’. This is the process of grinding a surface to get a very smooth finish on most flat surfaces. It’s a widely used mechanical abrasive cutting method where a spinning diamond-tipped rotating wheel containing abrasive particles removes small pieces of metal or non-metal material from a workpiece, producing a rounded, flat surface.
There are two main types of this grinding process. One is the rotary type, where the work piece is placed between two spinning wheels. In this type the work piece is usually made up of a number of different sized stones that are all put on a rotary chuck or blade. The other type is the wet grind, where the work piece is placed between two grinding wheels and the work is moving along a fixed path using a hydraulic or electrical motor.
In order to be effective, surface grinder operations must be carefully controlled. For this reason it’s often necessary to introduce additional materials into the grinding operation. Aqueous solutions containing abrasives are sometimes introduced into the work piece to help remove minute amounts of material. Abrasives are also sometimes used in conjunction with the abrasive wheel in order to speed up the process.
One type of surface grinder uses a unique electrical tool which is called the electromagnetic chuck. This is a heavy-duty electrical chuck similar to the ones found in many factories. It consists of two steel rods that have been electrically pushed together. One rod is attached to the work surface and the other to a stationary magnet. The electromagnetic chuck is capable of operating with both hot and cold working surfaces. A major advantage of this type of surface grinder is the high accuracy that it achieves while operating at different working temperatures.
Larger rotating spindles are used in some surface grinders. These larger grinders are capable of performing complex grinding operations. For example, these devices can grind surfaces at high speeds and can even rotate in opposite directions. The larger rotating spindles are most often found in industrial machines such as concrete plants.
Finally, a surface grinder has the option of a table top or a rotary vane. A table top surface grinder resembles a small table. It features a rectangular table and a grinding wheel with one or two grinding surfaces rotating simultaneously. Rotary vane surface grinder units consist of a rotary vane rotor and a series of pins which link the grinding surfaces.