第0页共36页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第0页共36页目录摘要.................................................................................................................3第1章、绪论.......................................................................................................31.1冲压模具的历史和背景.........................................................................31.2设计目的及意义.....................................................................................31.3目前发展状况.........................................................................................31.4主要设计内容.........................................................................................3第2章、基础理论分析.......................................................................................32.1冲压工艺介绍.........................................................................................32.2拉深件类型.............................................................................................32.3筒形件的拉伸变形分析.........................................................................32.4拉深成形过程中出现的问题及防止措施.............................................32.4.1起皱..............................................................................................32.4.2拉裂..............................................................................................32.5拉深系数的计算.....................................................................................32.5.1、拉深系数...................................................................................32.5.2影响极限拉深系数的因素..........................................................32.6拉深次数及工序尺寸计算.....................................................................32.6.1拉深次数的确定..........................................................................32.6.2各次拉深工序件尺寸的确定......................................................32.7圆筒形件拉深的压边力与拉深力.........................................................32.7.1.压边力..........................................................................................32.7.2拉深力..........................................................................................32.7.3公称压力......................................................................................32.8拉深工艺的辅助工序.............................................................................3第3章、工艺分析...............................................................................................33.1筒形件工艺分析.....................................................................................33.2计算毛坯直径D.....................................................................................33.3判断拉伸次数.........................................................................................33.4压边力的计算.........................................................................................33.5拉伸力的计算.........................................................................................3第1页共36页第0页共36页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共36页3.6公称压力的计算.....................................................................................3第4章、模具工...
