The research content of high speed cutting technology of automobile mold I. Research on the mechanism of high speed machining The development of high-speed machining technology at home and abroad is short, and there is still much room for further research and improvement in the cutting mechanism. It is mainly due to the significant increase in speed, cutting force, cutting heat, tool wear and machining during machining. The surface conditions will be significantly different from the phenomena produced by the traditional processing factors and the results. The lack of high-speed cutting mechanism will hinder the deep application of high-speed machining technology. Therefore, we must first study the mechanism of high-speed machining to deepen the understanding of high-speed machining technology by technicians and operators, and make full use of high-speed machining technology to cover automobiles. The molds are processed with high efficiency and high quality. Second, the optimization of high-speed machining parameters Practice has proved that the use of reasonable processing parameters in the case of equipment, materials and processing strategies will greatly improve work efficiency and achieve the best combination of processing efficiency, tool wear and processing quality. Therefore, the optimization of machining parameters in the high-speed machining of automobile panel molds is an important technical link to improve work efficiency and mold processing quality of automobile panel parts. Research on high-speed machining strategy of complex mold surface An important prerequisite for successful high-speed machining is to withstand nearly constant cutting loads, which guarantees good high-speed machining results under these conditions. For complex mold surfaces, it is necessary to study the machining strategy of removing material volume change and constant cutting load during machining to avoid faster tool wear and reduce tooling error. Fourth, the establishment of high-speed machining and cutting database for automobile molds High-speed machining and cutting database stores data such as high-speed cutting parameters for technicians and operators to query and use, and plays an important role in managing process data and assisting technicians in process planning. In order to improve the efficiency of technicians and operators, and to promote the stable and sustainable development of enterprises, it is imperative to establish a cutting database for high-speed machining of automotive panel molds. Technical means for research on high-speed cutting technology of automobile mold First, cutting processing finite element simulation technology The rapid development of computer technology makes it possible to use numerical simulation methods to study the relationship between cutting process and various parameters. The finite element simulation technology of metal cutting machining started in the 1970s has also been developed in the development of computer technology. Great progress. The finite element simulation of metal cutting considers material properties, tool geometry, cutting parameters (cutting speed, feed rate, depth of cut) as well as cutting force loads, thermal loads and residual stresses caused by machining. Based on the test aid and verification, the relative movement of the tool and the part during the virtual cutting process, the dynamic physical simulation of the chip forming process, can show the machining behavior and the internal stress, strain, strain rate and temperature of the machined part. The distribution of physical quantities, such as the processing quality of the parts and the wear and tear of the tools. Furthermore, by optimizing the process parameters, the processing quality of the parts can be improved, the degree of wear of the tools can be effectively reduced, and the expensive cost and time required to determine the new process by the traditional trial and error method can be reduced. In addition, the metal cutting process simulation can define the relationship between the relevant factors (processing parameters, tool geometry and the upper limit of heat and force) and material removal rate. Under the premise of ensuring the quality of the parts, the material removal rate is improved by changing the cutting parameters, thereby achieving the purpose of improving productivity. The high-speed machining mechanism and processing parameter optimization technology of automobile panel molds involve many disciplines such as materials science, mechanics, metal physics, machinery manufacturing, etc., and it has been difficult to solve in the field of CNC machining. The existing CAM software can only perform NC programming according to the surface features of the parts, ensuring that the tool path does not collide or interfere, but it is difficult to ensure that the processed parts are also optimal in physical targets such as surface quality and tool life, often resulting in products. The accuracy is low and the tool wear is severe, so optimizing the high-speed machining process is a difficult but important issue. From the above overview of the cutting processing finite element simulation technology, the combination of digital simulation and experimental research is an effective measure to solve the practical problem. The finite element simulation of the cutting process and the chip forming process provides a new and more effective analysis method for in-depth study of cutting mechanism and improvement of cutting quality. Previous page next page