模具课程设计报告
制动盘
落料拉深冲孔切边复合模
学院：机 电 学 院 班级：05010903 学号：2009301235 姓名：程晓祥
西北工业大学
目 录
1 分析零件的工艺性 ······························································ 3 2 确定工艺方案 ···································································· 5
2.1 计算毛坯尺寸 ············································································· 5 2.2 锥形拉深计算 ············································································ 6 2.3 确定工艺方案 ············································································· 6
3 主要工艺参数的计算 ··························································· 7
3.1 确定排样、裁板方案 ···································································· 8 3.2 计算工艺力、初选设备 ································································· 9 3.2.1 计算工艺力 ·········································································· 9 （1）落料力 ················································································ 9 （2）冲孔力 ·············································································· 10 （3）推件力 ·············································································· 10 （4）拉深力 ·············································································· 10 （5）压边力 ··············································································· 11 3.2.2 拉深功的计算 ······································································ 11 3.2.3 初选压力机 ········································································ 12
3.2.4 计算压力中心 ····································································· 12 3.2.5 计算凸、凹模刃口尺寸及公差 ·················································· 12
4 模具的结构设计 ································································ 13
4.1 模具结构形式的选择 ·································································· 13 4.1.1 模架的选用 ········································································ 13 4.1.2 模具的闭合高度 ·································································· 13
1 分析零件的工艺性
冲压件工艺性是指冲压零件在冲压加工过程中加工的难易程度。虽然冲压加工工艺过程包括备料——冲压加工工序——必要的辅助工序——质量检验—组合、包装的全过程，但分析工艺性的重点要在冲压加工工序这一过程里。而冲压加工工序很多，各种工序中的工艺性又不尽相同。即使同一个零件，由于生产单位的生产条件、工艺装备情况及生产的传统习惯等不同，其工艺性的涵义也不完全一样。这里我们重点分析零件的结构工艺性。
该零件是制动盘，如图1.1，该零件可看成带凸缘的锥形件，料厚t=1.5mm，拉深后厚度不变；零件底部圆角半径r=1.5mm凸缘处的圆角半径也为R=1.5mm；尺寸公差都为自由公差，满足拉深工艺对精度等级的要求。
图1.1 工件图
其主要技术要求如下：
1.Φ100±0.07对50°内锥其轴线同轴度不大于Φ0.008； 2.镀锌钝化9～12μ；
3.未注公差按IT12（GB1804-79）级精度制造； 4.锐角倒钝；