Centerless grinders are one of the most common types of grinders in use today. This type of grinder is different from the traditional table or stand model in that it has the work piece in its center. As such, it will typically require a much larger table area and greater room to operate. Because of these differences, a centerless grinder can be used in a number of different production applications.
One of the most popular uses for a centerless grinder is in the manufacture of precision machined parts. In this case, the workpiece is completely clear of any obstructions so that the fine surface finishes can be etched or engraved. In many cases, precision machined parts are made using tiny steel particles that are driven by compressed air. In order to accomplish this, a cylindrical grinding wheel is attached to the workpiece through a shaft that runs through the workpiece. The workpiece is then placed in the grinding wheel’s chuck and the grinding begins.
In another application, the centerless grinder is used to obtain the same results as the previously mentioned example. In this case, the workpiece is again clear of all obstructions so that the fine grinding wheel works at its optimal level. A solid workrest is then installed on top of the workpiece so that the grinding continues around the workers while the workers are kept in a stationary position. Since the workers keeps the workpiece completely clear of all edges, it provides excellent material clearance, even among sharp edges of various sizes.
Centerless grinders can also be used in milling applications. In this case, a very large table may be required to provide even heating and cooling. Typically, the work performed with the milling machine is a collection of rollers that are arranged around a large table. The grinding process occurs around the table. The centerless grinder is then used in conjunction with the table. By using the two together, a much smoother operation is achieved that translates into higher productivity.
In the milling and drilling applications, the two types of centerless grinder are typically used in tandem. The traditional version is known as the through-feed grinding machine. This type of grinding unit consists of a grinding wheel and a series of stationary rollers. The power source used is usually an electric motor.
The term ‘centerless grinding’ is frequently used in the context of computer numerical controlled (CNC) machining. Centerless grinders are ideal for CNC machine operation since they do not require the use of a stand or ‘bench’ or a base support. They allow the operator to manipulate workpieces in their entirety and to perform any operation with complete ease and confidence. They are perfect for surface polishing and surface tumbling and finishing, grinding, drilling and peening. Some centerless grinders are also designed for making shallow dents in workpieces by grinding away at them at a slower pace than traditional machines. This feature is ideal for use in drilling holes for securing bolts and other fasteners.