Based On The Processing Deformation And Vibration Control Of Multi-frame Structure And Efficient Milling Mechanism

Multi-frame structure components with characteristics of high intensity and light mass are widely used in aero and electronic industries. During machining process, the machining deformation and machining vibration are very obvious, the machining precision and the machining efficiency are very difficult to be ensured at the same time. This has affected the enterprise's economic efficiency enormously. Study on the machining deformation and machining vibration of the mufti-frame structure components is very important. The main work in this paper is concluded as follows.1. The mechanical model of the milling is studied. Based on the existed documents, the milling force model considering the cutter round radius effect is founded. The model is verified with milling experiment.2. The machining deformation of mufti-frame structure components under elastic deformation influence is studied. The finite element model for the machining deformation analysis under elastic deformation influence is founded, and then based on the model, large quantities of FEM simulations have been done under different machining conditions, including the thin-walled machining deformations under different cutting parameters and the thin-web machining deformations under different cutting paths. According to the simulation results, the machining deformation rules are discussed.3. The machining deformation of mufti-frame structure components under residual stress influence is studied. The finite element model for the machining deformation analysis under residual stress influence is founded, and then based on the model, large quantities of FEM simulations on the thin-web machining deformations have been done under different machining conditions. According to the simulation results, the machining deformation rules are discussed.4. The milling dynamic characteristics of the mufti-frame structure components are studied. First, the modal analysis of the mufti-frame structure components have been carried out. Then based on the existed documents, a dynamic model is founded. At last, the milling dynamic characteristics in different cutting parameters are analyzed.5. The high efficiency, high precision machining process for the mufti-frame structure components are studied. The existent studies have been summarized and the new high efficiency, high precision machining processes are put forward.