Design And Dynamic Analysis Of The Column Of Forming Milling Machine

The form milling machine has high processing efficiency, good reliability, easyoperation and adjustment, broad application range and other characteristics. With therapid development of the industry in our country, gears with high-speed, heavy loadand high accuracy are more and more widely used. Therefore, gear milling machinehas an increasingly wide utilization in enterprises and factories. The column is the keycomponent of form milling machine. Its static and dynamic performance can directlyaffect the machining accuracy. The column which is designed based on traditionalmethods is not optimally designed with advanced methods. Therefore, the finiteelement method and dynamic analysis theory are used to analyze the static anddynamic performance of the column for getting the column with higher static anddynamic performance and economic benefit. The study and application of these newmethods is quite significant in shortening the cycle and reducing the cost of researchand development of machines, improving economic benefit and the performance andmachining precision of machines. The main tasks which have been done are as follows:Firstly, the finite element model was built by putting the Pro/E-based entitymodel of the column into ANSYS Workbench. The static and dynamic performance ofthe column was analyzed by ANSYS. The static stiffness, dynamic properties andstress distribution of the original column was acquired through calculation analysis.Secondly, different forms of internal structure of the column model wereproposed, explored the effects of the changes of rib structure in the column of themachine, such as, the different forms of structure and the different thickness of the ribon the static and dynamic performance of the column.Thirdly, found out the effects of structure and the thickness of the rib on the staticand dynamic performance of the column in the end by comparing the results of columns of different shape. Eventually, the column with comprehensive performancewas optimized and then picked out.Fourthly, the gear machining trial cutting experiment was done on the NC formmilling machine which was independently developed in order to verify the structuralperformance of the optimized column and the correctness of the theoretical analysisresults.The study showed that the combined use of finite element analysis andoptimization optimized reasonable structure and layout, increased the naturalfrequency and the static and dynamic performance of the column. Then the columnwith comprehensive performance was optimized. This method has successfullyavoided the blindness of traditional method.