The machine is used mainly for grinding various types of the straight blade cutting tools at different angles. It is suitable for grinding different types of cutting tools such as furniture making, printing and textile industry etc., it also can be used for sharpening the knife made from high-speed tool steel. The has good and reasonable appearance arrangement, it consist of the six electric components: the main body, the working table, the sliding board, the motor and the grinding head, the structure of each section is compact. The machine can grind 4 pieces of blades at the same time, the grinding head feeds automatically in average speed, that ensure the cutting tool exert its unique advantages equally. It is the necessary grinding machine for the industries of furniture making and straight blade making.