Centerless grinders are one of the many types of grinders available in the shop and they come in several designs. The most common and versatile model is the table-top style. This type of grinder is similar to a lathe in that it is powered by a motor that must be turned by hand. Unlike a lathe, however, the work piece is in position and the grinding wheel rolls freely across the work surface.
Centerless grinding is a unique machining method which utilizes abrasive cutting into a workpiece in order to remove material. By using this unique and new process, the entire process of grinding a part can be completed from the solvents used in the in-feed grinding component of the machine or from a solenoid located inside the workpiece. These are some of the advantages of the centerless grinder:
One of the most distinctive features of the centerless grinder is the fact that it requires no turning of the working wheels. By utilizing the same solenoid found in table top grinders, the work piece moves into a stationary position and the grinding wheel begins to turn. The large area of the working surface that is accessed during the operation of the grinding wheel ensures that only the areas of need are cut. Although the in-feed and end-feed grinding wheels may be used at the same time, it is still safe to have only one grinding wheel working at any given time. Since there is no turning of the wheels, the entire operation can be completed without interruption. The adjustable feed rates allow the operator to set the grinding wheel to the appropriate speed for the particular project.
Another advantage to using a centerless grinder is the speed of the motor itself. Because the wheels are not driven by a human, they are able to operate at higher speeds than other machine setup methods. This allows the operator to achieve very high quality results and eliminates many of the problems involved with slow or inefficient machine operation. Some of the benefits of the centerless grinder include:
The centerless grinder is an excellent machine setup choice due to the fact that it provides the user with a large surface area and large surface finishes. With the in-feed and end-feed grinding wheels included, the ability to cut a wide variety of materials becomes possible. The large cutting surfaces and uniform centerline ensure that there is a good even cut on every workpiece. The in-feed and end-feed grinding wheels also eliminate the need to use any grinding plates, which improves the machine’s output. The overall efficiency of the centerless grinder increases with a better overall cut depth and consistent finishing process.
Due to the lack of turning wheels, this type of machine can be used for a wide variety of abrasive materials, including drilling. Many centerless grinders include a sliding blade and some machines include both a grinding and cutting blade system. Some of the popular options in these units include: flat bed, heavy duty, plastic-coated, custom, and contact bearings. Although they do not include a table in their design, many centerless grinders include a small workholding area for easy hand work.