Static And Dynamic Characteristics Analysis And Experimental Research Of CNC Lathe Feed System

The equipment manufacturing industry not only attaches great importance to the domestic market,but also looks at the world platform,and it also occupies a place that cannot be shaken.The basic structure of CNC lathe feed system researched and produced at home and abroad is almost the same;however,the CNC lathe feed system developed and produced in China is not strong in processing capability,the precision of processed products is not high,and the stability is not high,which is difficult to apply to high-precision product processing.From the perspective of feed system theory analysis and simulation experiment,this paper systematically studies the driving mode,dynamic model and static and dynamic characteristics of the CNC lathe feed system,and improves the machining performance of the CNC feed system.The key research object of this paper is the L-200 series high-performance CNC lathe feed system.Through the finite element method,the proper mathematical model of feed system dynamics is established.In-depth analysis and study of the static and dynamic characteristics of the series of CNC feed systems under complex conditions,and the relevant tests and comparisons of the dynamic models.The main contents of the study are as follows:Firstly,the theoretical basis of feed system design is discussed,and the design and analysis are carried out from the finite element method of static deformation and dynamic analysis.Thesystem analysis of the dynamic model of the L-200 series high-performance CNC lathe feed system,combined with the performance index and cutting requirements of the L-200 series machine tools,completed the core requirements of high accuracy,stability and inertia of the feed system.set up.The characteristic calculation of the SSDLFS dynamic model transmission mechanism is carried out,which mainly covers the five aspects of torsional load,axial load and screw deformation.The composition of the dynamic model servo system and the functions of each part are clarified.The position unit and the velocity unit are carried out.Calculation.Secondly,a number of variables were detected by Renishaw laser.The results were compared with the calculated results.The results show that the error is within the controllable range,and the output torque error is only 2.08%.The laser X-axis and Z-axis directions have high detection accuracy and high data accuracy,which verifies the feasibility of establishing a mathematical model.According to the finite element method,the finite element model of the L-200 high performance CNC lathe feed system was established by ANSYS analysis software.The whole process of the model establishment is introduced in detail,including the establishment of the feed system ANSYS model,the selection of the unit type,the grid setting and the dynamic modeling of the joint surface.Finally,the static and dynamic characteristics analysis of the finite element model of the L-200 high-performance CNC lathe feed system is carried out.The static and dynamic characteristics of the key components,the ball screw and the feed system,are analyzed.The reason the system produces resonance and points out the improvement method.