Development Of Horizontal CNC Spinning Machining Center With Multi-process Integration

Spinning forming technology is widely used in aerospace,automobile,light industry and other fields because of its principle of no-chip processing and excellent performance of manufacturing products.With the increasing market demand of spinning parts and the tendency of spinning parts in modern manufacturing to develop in the direction of complex structure,the spinning equipment which can only realize single forming process cannot meet the precision and high efficiency of complex parts.Therefore,the development of high automation,multi-process integrated spinning forming equipment has a strong engineering practical value.Based on the spinning technology,this paper comprehensively utilizes the electromechanical and liquid integration design theory and the finite element numerical simulation to complete the independent development and development of a horizontal NC spinning machining center which can meet the requirements of multiple process processing for complex surface spinning parts.According to the technical requirement of spinning machining center,through analyzing its working principle and forming process,this paper puts forward the general design idea and the modular division of the overall structure of spinning machining center.Based on the prediction of the deformation force in the rotary forming of the machine tool,the maximum bearing capacity of the machine is determined,the speed selection of the moving source of the spinning center is completed and the overall technical parameters are established.Based on the Creo software,the general structure of spinning machining center is built,and the main body is developed,which has the function of multi-function roller Library,roller automatic switch,0°~90° rotation roller mounting angle,and has better neutral and stability tailstock,Combined with finite element numerical simulation method,the strength and rigidity of the whole structure and key parts of the machine tool are checked.Based on electro-hydraulic combined control technology,a set of Tailstock hydraulic system which can provide stable tail-end force and can realize "fast forward-work-fast-rewind" movement is constructed,and using the electromagnetic proportional overflow valve,spindle speed measurement,calculation device design of the tail-top force hydraulic control system,in order to achieve small pressure starting spindle,under large pressure spinning processing,The motion reliability simulation of Tailstock hydraulic system is completed by using simulation x software and verified by test.Select GSK980 TDC CNC System to control the movement of machine tool,using weak electricity to control the layout of the spinning machining center electrical control system.Finally,the reliability test of the spinning machining center is carried out through the positioning precision test,vibration test and product spinning forming test.In order to ensure the equipment damage caused by excessive load during the spinning forming process,the on-line spinning pressure detection system is constructed,and the intelligent protection of spinning machining center is realized.Based on the above research,the development of multi process integrated horizontal CNC spinning machining center is completed.The numerical control roller seat,which is constructed by means of the combination of numerical control turret and rotary indexer,can realize conventional spinning,power spinning,flanging,trimming and other spinning forming technology and auxiliary rotary processing technology,and significantly improve the utilization rate and production efficiency of machine tool.The finite element analysis of the whole structure and the key parts of machine tool shows that the strength and rigidity of the center of spinning machining meet the design requirements.Tail seat hydraulic system simulation of the tail top fast forward,the error between the speed of velocity and the velocity of the tail top is 3.94% and 7.5%,the error of the system pressure,tailstock force and theoretical result is 5% and 0.4%,which indicates the accuracy of the simulation model and the hydraulic system can realize the tail top " Fast forward-work in-rewind " movement and provide a stable and reliable tail-top force.The precision test of the feed system,the vibration test of the rotating roller seat,the product spinning test result and the force test show that the precision of spinning machining center satisfies the design requirement,and the roller seat has better rigidity,can rotate and produce the qualified products and realize real-time monitoring of spinning pressure.