A double-sided grinder, sometimes also known as a double-feed grinders, is a grinding device consisting of two rotating surfaces that rotate clockwise and counterclockwise. Usually the first spinning surface is called a fixed blade. The second spinning surface is called a variable blade, which can be used for grinding or for polishing and honing workpieces.
The most common types of machines are those that have a pair of disc types rotating in the same plane. The two discs may be of different thicknesses and can have different widths. Typically the two discs are complementary in their operation, with one having a higher degree of grinding power than the other. One example of this type of double-sided grinder machine features a blade with a higher degree of cutting depth than the other.
The grinding angle of any machine should be considered when determining what types of blades are appropriate. The best option is to purchase one with the same height and/or width as the base and/or spindle unit on which the blade will be mounted. It is also advantageous to consider the wear and tear that is common with the types of blade sets found on different models of machines. For example, a burr blade set up that is frequently used on a lathe may encounter less wear and tear as compared to a diamond blade set up.
Some grinders may feature blade covers, which are hinged or sliding pieces of metal used in conjunction with the grinding machine’s blade. This facilitates the easy replacement of damaged blade parts. Some blade covers are hinged and fixed, while others may be opened in order to allow access to the blade’s cutting surface for cleaning or polishing.
The types of grinding machine wheels that are found on grinders range from a small wheel with a single grinding plate to larger multi-spindle wheels with many plates. Most grinders will have at least two grinding plates, but the type of grinding wheels that are found will depend on the particular type of machine that is being used. For example, a machine designed to produce sanding chips will likely have larger wheel sizes than a machine designed for grinding flat components. Also, the type of grinding wheel needed may be an indicator of the type of material that will need to be ground. For instance, a compound mill wheel is more suited to grinding aluminum than a rotary grinding wheel would be.
For many operators, the most important consideration when purchasing a new grinder lies in selecting the type that is most suitable for their operation. These machines can be found in a wide price range, so there is a grinder available to meet almost any budget. Before purchasing, it is important to carefully measure the space that is available and the expected amount of usage to determine which type of grinding machine will be the most appropriate. Once the grinder has been purchased, the operator should familiarize himself with its proper care and use to maximize its performance.