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为了提高弹体毛坯的材料利用率和降低生产成本,开展了钢管一次收口工艺改进。根据钢管收口过程的变形规律,改进已有工装、模具,最终实现了弹体毛坯由钢管一次收口成形。该工艺的难点是控制收口的形状,以及收口过程中模具润滑材料的选择。工艺改进后,简化了工序,减少了工模具及刀具的消耗,改善了工作环境,降低了操作工人的劳动强度,极大地提高了材料利用率,产品质量稳定,符合制造与验收规范要求。
In order to improve the material utilization of the projectile blank and reduce the production cost, a steel pipe closing process improvement was carried out. According to the deformation of the pipe closing process, improve the existing tooling, mold, the final realization of the body blank from the pipe once shut-forming. The difficulty of the process is to control the shape of the shut-off and the choice of mold lubricant during shut-off. After the process is improved, the process is simplified, the consumption of tools and tools is reduced, the working environment is improved, the labor intensity of the operating workers is reduced, the material utilization rate is greatly improved, the quality of the products is stable, and the requirements of the manufacturing and acceptance specifications are met.