Development status and prospects of flexible spinning technology for curved-generatrix thin-walled parts
Spinning technology for curved-generatrix thin-walled parts has been widely applied in aviation,aerospace,automobile,chemical and other industrial fields. The spinning method is used to form such parts,which often need to be supported by a rigid mandrel of the same shape in order to control the forming accuracy and wall thickness distribution. However,rigid mold spinning has problems such as difficult demoulding,long production preparation cycle,and single product specification,which is not suitable for personalized small batch production. With the development of numerical control technology,the flexible spinning technology that only uses a universal mandrel or support roller instead of a traditional rigid mandrel has also developed rapidly. Flexible spinning can improve the shortcomings of rigid mandrel spinning products,such as single product specification,long preparation cycle,and high cost of small batches,and in addition to the barrel and conical parts of straight generatrix,it is also applied to curved generatrix shell parts.In this paper,the flexible spin-ning of curved generatrix in recent years is reviewed,in order to explore a new spinning method with strong versatility.
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