Improvement of Structure Design and Mold Manufacturing of the Environment-friendly Fireworks Cartridge Case

Based on production procedures and FEM analyse results on stress and strain,the stucture of the fireworks cartridge case was improved.And the hot-forming mold was designed as separate structure.After being assembled into a whole with the up punch set,the intricate punches were cutted in a numeric control machine only by one installment.And due to employing CAD/CAM technologies,the high shape accuracy and position accuracy of the punches were obtained.The stucture design improvement of catridge case obviously re-duce the production cost and resource consumming,thus results in considerable economic benefit and social benefit.