Ultra-long small taper thin-walled cylindrical parts are widely used in the aerospace field. Such parts are often formed by shear spinning. The traditional processing process is usually two-stage or even three-stage splicing and welding,which consumes materials and has a complicated process. At present,the integrated forming technology can effectively reduce the process and improve the utilization rate of materials. In this paper,ABAQUS simulation software was used to establish the shear spinning model of D406A coni-cal parts,and the influence of the feed ratio of the rotary wheel and the radius of the rotary wheel on the thickness deviation of the shear spinning wall of the conical part was analyzed. The research showed that when the feed ratio was 1mm/r and the radius of the rotary wheel was 6mm,the forming wall thickness of the cylindrical part was more uniform. It provides theoretical guidance for realizing the forming of ultra-long small taper thin-walled cylindrical parts.
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