Tool grinders are machines used to sharpen and shape cutting tools, such as drills, end mills, and lathe tools. They operate by using an abrasive wheel to grind the tool's surface, ensuring it maintains a sharp edge for efficient cutting. Tool grinders are essential in manufacturing and maintenance, as they help prolong the life of tools and improve their performance. These machines come in various types, including bench grinders, CNC tool grinders, and surface grinders. Each type serves specific purposes and offers different features, allowing users to select the best option for their needs. Proper use and maintenance of tool grinders can significantly enhance productivity in workshops and factories.