The Effect of Different Roll-beating Methodson Deformation Forces of Rack Cold Roll-beating

Xiaoming Liang

Abstract


Cold roll-beating forming of screw is a new technology of near-net plastic forming which, by adopting high-speed revolving rolling wheels to beat the workpiece surface repeatedly and interruptedly, realizes dynamic impact, partial load and accumulation. During the forming process, the deformation force exerts great influence on the quality of the shaped component, the design of forming equipment and its service life. Based on the basic principles of cold roll-beating forming of screw, this study adopts ABAQUS software to set up a finite element simulated model of cold roll-beating forming of screw. Then the changes of the deformation force during the forming process of forward and backward beating are analyzed according to the simulation results. Rack rolling experiment is conducted on the refitted cold roll-beating forming equipment, during which the deformation force in the stable stage of the forming process is measured, achieving an identical result as the simulating result. Therefore the validity of the finite element simulation is proved, providing a reference for the choice of different ways of rolling in cold roll-beating forming.


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