What is a cutting surface grinder? It is simply a type of rotating mechanism that generates a rough surface cutout from grinding. The roughness of the cutter is controlled by a computer program that is digitally control. Basically it’s used to make a flat, smooth finish on non-flat surfaces like stainless steel, aluminum and sometimes even plastic. It’s a widely used roughing abrasive machining method where a spinning diamond blade covered in soft scratchy particles cuts hard metal or non-metallic material from a workpiece, creating a very small face of it smoothly or at an angle.
There are two types of grinding that can be accomplished with surface grinders. One is referred to as single pass grinding where a single belt or wheel of diamond grit is passed across the work piece. The other is referred to as multiple pass grinding wherein multiple belts or wheels are passed across the work piece. It’s up to the operator whether or not to allow for the formation of a coarse dust layer on the work piece. However, if this occurs, it may not be possible to achieve the exact finish.
Grinding of one or both sides of a metal is usually done using one of two types of surface grinder. One is known as a centripetal grinding spindle, while the other is called a disk grinder. Centripetal ones are better suited for drilling holes and mounting stationary power tools. On the other hand, disk grinder types are more appropriate when dealing with curved surfaces and when the output is a bit higher than the input. The advantage of having a centripetal grinder is that it has a high grinding force, while the disk variety relies solely on its spin and consequently can yield good working speeds even under tough working conditions.
In order to understand the differences between the two types of grinders, an understanding of how an abrasive machining process works is necessary. When materials are placed into a grinding machine, the abrasive material passes through the grinding wheel and the wheels have contact with two different surfaces located either side of the blade. These two surfaces are typically rough and polished. The rough surface is called the work face, while the polished one is known as the work area. Grinding wheels are usually made of either steel or aluminum, and they’re attached to a fixed platform.
To begin the process, the rough surface grinding wheel is moved forward until it’s about to contact the work surface. Meanwhile, a small chuck is inserted into the grinding machine so that a sliding action would occur, thus lifting the work piece into contact with the grinding wheel. With that, the chuck automatically locks into place and the abrasive material is now transferred to the work piece. A rotary hammer is used to strike the work piece against the stationary chuck in order to drag it into the grinding area.
Another difference between a surface grinder and a magnetic chuck is that the former generates a more even wear of the metal and is thus better at producing a consistent product. On the other hand, the magnetic chuck relies on a nonmagnetic force to create the grinding motion. It can be used for various types of metal, although those metals that are more resistant to magnetic forces are best suited. A nonmetallic product may also benefit from a magnetic chuck, but it should be noted that the magnetic force can alter the properties of the nonmetal used in the chuck.