Study And Application In Low Rigidit Part By Finite Element Method And Technics Optimized

In the field of metal cutting, Cutting forces, cutting temperatures and tool wear are the major indexes reflecting cutting process. Especially, cutting forces are widely used. In the cutting process, it directly decides generation of heat and plays a serious role in tool wear and life, precision of work piece, quality of the cut surface, vibration and etc. The conventional study is done with the theory and the experiments of metal cutting. Using the computer simulation technology, metal cutting technology and machining technology, this paper studies on finite element analysis, computer simulation and predicts machining quality of low rigidity part.Firstly, based on studying of The key technology of finite element simulation, this paper use FEA software Deform to model and simulate cutting process. As an application, machining of 45# steel using uncoated carbide tooling was investigated. Comparisons of predicted cutting forces with theory forces showed similar trends and reasonable agreement.Secondly, we compare predicted cutting force with the cutting force that measured by using experimental equipment. The result shows that they similar trends and reasonable agreement too.Finally, introduced popular methods of teachnics optimized; based on above researches and experiments, this paper gropes the method of machining quality predicted for slender shaft. Then established predicted formula of surface roughness and cutting dosage, and proved this formula is usable.