A grinding machine is a tool used to shape and finish materials, typically metals, by removing small amounts of material through abrasion. It operates by using a rotating wheel covered in rough particles, which grind away the surface of the workpiece. This process is essential in manufacturing and metalworking to achieve precise dimensions and smooth finishes. There are various types of grinding machines, including surface grinders, cylindrical grinders, and bench grinders. Each type serves a specific purpose, such as grinding flat surfaces, cylindrical shapes, or sharpening tools. These machines are vital in industries like automotive, aerospace, and tool-making.