不锈钢饭盒盒盖复合模设计1北京理工大学珠海学院 2020 届本科生毕业设计目录诚信承诺书.....................................................................................................................................................2摘要.................................................................................................................................................................3Abstract...........................................................................................................................................................41 绪论..............................................................................................................................................................62 零件工艺的分析..........................................................................................................................................72.1 盒型件零件的工艺分析..................................................................................................................72.2 计算毛坯尺寸..................................................................................................................................72.3 排样..................................................................................................................................................92.4 工艺过程的确定............................................................................................................................113 工艺力的计算............................................................................................................................................133.1 落料力计算....................................................................................................................................133.2 卸料力计算....................................................................................................................................143.3 拉深力计算........................................................
