Difficult To Machine Frame Structure, Efficient And Precise Processing Mechanism And Technology,

The frame structure components are widely used in die and mould industry, aeroindustry and electronic industry because of its perfect mechanical characteristics. Some ofthe frame structure components have the thin-walled structure character, so the rigidity isvery poor. During machining process, the machining precision and the machiningefficiency are very difficult to be ensured at the same time. Study on the high efficiency,high precision machining mechanism and technology of the difficult-to-cut frame structurecomponents is very important.The main studies and conclusions are as follows:1. The existent machining mechanism and machining crafts of the frame structurecomponent are studied. Through summarizing and analysis, the advantages and thedisadvantages of these works are pointed out, then the research strategies and methods aredetermined.2. The static mechanical model of the milling is studied. Based on the existent models,the milling force model considering the cutter round radius effect is founded, the model issimple and efficient, and it can be used in more comprehensive machining deformationanalysis.3. The finite element analysis technology for the machining deformation analysis offrame structure components is studied. The finite element model for the machiningdeformation analysis is founded, then baded on the model many simulations have beencarried out in different machining conditions. According to the simulation results, themachining deformation rules of single frame component and the whole multiple framecomponents are both discussed.4. The milling dynamic characteristics of the frame structure components are studied.Based on a simplified dynamic model founded, the milling dynamic characteristics indifferent cutting parameters are analyzed.5. The high efficiency, high precision machining process for the difficult-to-cut framestructure components are studied. The exsistent studies have been summarized and the newhigh efficiency, high precision machining processes are put forward.