西石门铁矿选矿厂的分级机螺旋叶片属于外购件,费用高,周转时间长。为提高备件的自给率和经济效益,该厂决定自主研发分级机螺旋叶片,在开发该产品的过程中,重点是冷压模具的研制。1 设计思路由于大叶片内、外侧螺旋线曲率不同,所以在研制冷压模具过程中应该考虑以下几点:①既 West Shek Mun iron ore concentrator classifier spiral blades are purchased parts, high cost, turnaround time. In order to improve the self-sufficiency rate and economic benefits of spare parts, the factory decided to independently develop grading machine spiral blades. During the development of this product, the focus was on the development of cold-pressed molds. 1 design ideas As a large blade, the outer spiral curvature of the outside, so the process of developing cold-pressed mold should consider the following points: ① both