Research Of Some Problems About Cutting Tools Design And Manufacture

With the rapid development of the modern manufacture, modern cutting technology is demanded higher increasingly. Tools play an important role in the cutting manufacture because of their great effect on the performance of cutting. The paper studies some problems in the cutting tools design and manufacture experimentally. There are two parts in the paper. One studies the chip-breaking groove design, which is an important part of the turning tools design, and some problems in the using of the cutting tools. The other studies grinding ruled surface, which is an important part of grinding the twist drill, and the method can be applied into grinding the ruled surface of another cutting tool.The paper presents the significance of chip-breaking groove studies, and summarizes the background of chip control and chip-breaking groove at home and abroad.The analytical and experimental research presented here deals with the chip flying. The relationship between the chip flying and the geometrical feature of the groove is studied. The relationship of the geometrical feature of the groove, the material, and the cutting force is studied, and the relationship of the chip-breakability, the cutting force and the tool life is studied, too.The theory of the friction-reducing groove is presented here, and its effect on the chip form, the cutting force and the tool life are studied analytically and experimentally. The paper, based on the experiments, points two problems in the cutting test, which are the effects of the cutting speed and the radii of the workpiece in the cutting process. The paper analyzes the materials and the geometrical feature of the insert, and summarizes the characteristics of the chip-breaking groove for the stainless steel. The paper studies the method of grinding the ruled surface of the twist drill in the 6-axis CNC grinding machine with the conical grinding method, and the method is applied in the manufacture.