Simulation And Cutting Experiment Of Hard Cutting Under Air Cooling Cutting

The manufacturing industry is an important factor in economic growth around the world and also the foundation of industry, manufacturing has been looking for ways to reduce production costs and improve the efficiency of existing technology.Cutting is an important part of advanced manufacturing technology, Cutting is the main processing technology and fundamental technology in manufacturing industry,such as automobile,efficiency in cutting.As the whole global environment is deteriorating day by day, people pay more and more attention to environment problem. Meanwhile, putting forward of the strategy of sustainable developm aeronautics and astronautics, power and mold.so wo should find the way to reduce cost and improve ent makes green manufacture technology getting more and more attention. Applcation of air-cooling cutting technology of vortex tube has been already the most hot research of green manufacture technology. Therefore, the thesis applys the contrast test for air-cooling and dry cutting of vortex tube and analyzes the effect of air-cooling. Moreover it simulates the process of cutting by analysis software.Firstly, Combining with production practice, consulting domestic and overseas relative information, based on the analysis of vortex tube's cooling principle and power separate process, the system of air-cooling with vortex tube is made up in this thesis.Then, the experiment research of dry cutting and air-cooling cutting is done by using PCBN tool to bearing steel GCr15. The results indicate that: compared with dry cutting, air-cooling cutting has the influence on the aspects of cutting force, cutting temperature, chip formation. Because of metal softening effect, the cutting force is bigger in air-cooling cutting than in dry cutting, cooling air accelerates the conduction among the workpiece, chip and tool. This makes the temperature of cutting zone become lower and reduce the tool wear, and the machined surface quality is improved. The workpiece is locally cold short by air- cooling cutting, this is beneficial to shear fracture of chip, reduce cutting load and enlarge the chip deformation.Finally, the paper establish finite element analyse model of glomerocryst cube boron nitrogen tool (PCBN) cutting hardened steel under cold air. The paper use use finite element software DEFORM-3D implement modeling and simulation on dry cutting and air cooling cutting, and modeling and simulation on dry cutting and air cooling cutting by diamond shape tool with flute profile. We obtain stress distributing, temperature distributing, tool ware and chip formed process under air cooling, and then analyse them. Meanwhile, comparative simulation of air-cooling cutting and dry cutting is done. The simulation result coincide with test result. The simulation result has certain reference value to application of air-cooling cutting technology.