This machine tool is specially designed according to the fact that the blades of the crusher are easy to be dull. It is a supporting product of the crusher, which greatly improves the working efficiency of the crusher, and can also grind the straight-edged blades of technical machine tools and other machine tools. Structural features: The machine tool is composed of a machine body, a workbench, a linear slide bar, a sliding block, a geared motor, and a cooling system and electrical control components. The components are compact in structure, beautiful in appearance, and stable in the uniform speed of the grinding head. It has the advantages of small size, light weight, fast effect, stable operation and easy adjustment, and it is suitable for processing various straight-edged tools.