Numerical Simulation And Technical Study Of Parts With The Shape Of Thin-wall And Curvilinear Generatrix During Spinning Forming Process

The parts with the shape of thin-wall and curvilinear generatrix are a kind of parts and pony-roughing pass spun parts which are widely used in the industry of aviation, aerospace and weapons. It will be great significant to discuss the spinning forming theory of this kind of parts for the research of their forming discipline and forming precision. A three-dimensional finite element model of the parts with the shape of thin-wall and curvilinear generatrix during the forming process has been established in this text, and spinning forming theory of this kind of parts besides the law of how the main technological parameters affecting their forming process have been researched. The main content is as follow:A finite element model for the process of forming this kind of spun parts has been established. The forming process has been simulated. By the analysis of the simulated results, the distribution and alteration law of stress and strain about the parts with the shape of thin-wall and curvilinear generatrix during the deep drawing spinning process is gained, thus spinning forming theory of the parts with the shape of thin-wall and curvilinear generatrix during the spinning process can be discussed in a certain extent.Effect of the minor technological parameters (such as temperature, equipment characteristic and material property, etc.) is neglected in the text and only the effect of the main technological parameters (such as the diameter of the wheel, feed speed of wheel, rotate speed of the spindle and dip angle of the work piece) which affect the spin forming process has been researched. By comparing the simulation result of different technological parameters, the law of how the different technological parameters affect the performance index of the spun parts has been gained, and the parameters which were mentioned above include forming quality,the equivalent stress and the equivalent strain, the spinning force. It provides reference for selecting the technological parameters, and reasonable technological parameters are selected basing on it. By the analysis of the simulation result, the possible defect and the preventive action have been discussed, and the reference is provided for spin forming process of this kind of work piece.