机械5

摘要 本次设计内容是关于对给定的工件设计冲压模具，其给定工件是某汽车一支撑架零件，分析该工件结构特征，对工件进行展开和计算，查阅相关资料和对工件结构特征仔细分析选择采用多工位级进模，多工位级进模能提高生产效率，保障操作的安全。根据工件结构和展开图设计工件排样方案，确定排样工位、条料宽度、步距和搭边。工件在加工过程中有一次两边90度弯曲和四次单边45度弯曲，为能实现这些弯曲需要采用斜楔滑块机构。由于工件结构比较复杂，所用排样工位有些多，该模具体型相当的大，许多模具零件不能找到合适规格，需要按设计要求设计相应零件。 关键词：级进模，排样设计，斜楔滑块机构 Brace parts stampi
ng die desig
n ABSTRACT This graduatio
n desig
n is about for the give
n workpiece stampi
ng die desig
n, the workpiece is give
n some car a support frame parts, a
nalyzed the structure characteristic of workpiece, to expa
nd a
nd calculatio
n of workpiece, co
nsult the releva
nt data a
nd careful a
nalysis to choose the workpiece structure usi
ng multi-statio
n progressive die, multi-statio
n progressive die ca
n improve the productio
n efficie
ncy, guara
ntee the safety of the operatio
n. Accordi
ng to the workpiece structure a
nd layout for graph desig
n artifacts, determi
ne the layout locatio
n, strip width, i
nterval, a
nd o
n. Workpiece i
n machi
ni
ng process o
n both sides of a 90 - degree be
nd a
nd u
nilateral 45-degree be
nd, four times i
n order to achieve these be
ndi
ng
need to adopt wedge slide block mecha
nism. Due to the workpiece structure is complicated, the used layout locatio
n i
n some more, the mold size is quite big, ma
ny ca
n
not fi
nd a
n appropriate specificatio
n mould parts,
need to desig
n the correspo
ndi
ng parts accordi
ng to desig
n requireme
nts. KEY WORDS: progressive die, layout desig
n,i
ncli
ned slide block mecha
nism 目录 前言1 第1章绪论2 1.1中国模具现状2 1.1.1模具设计与制造能力状况2 1.1.2模具CAD/CAM技术状况2 1.1.3我国模具发展趋势2 1.2课题的主要特点及意义3 第2章冲压工艺与模具设计4 2.1冲压件工艺性分析4 2.1.1分析零件图4 2.1.2对零件进行展开计算5 2.2支撑架零件排样设计7 2.2.1确定载体的形式7 2.2.2工位设计7 2.3支撑架零件冲压力、卸料力和推件力计算10 2.3.1冲压力计算10 2.3.2卸料力和推件力计算12 第3章模具凸、凹模设计计算14 3.1凸、凹模加工尺寸计算14 3.1.1冲裁用凸、凹模尺寸计算14 3.1.2弯曲用凸、凹模尺寸计算15 3.2凸、凹模的固定方式设计15 3.2.1冲裁用凸、凹模固定设计15 3.2.2弯曲用凸、凹模固定设计18 第4章模具零件选择和制造19 4.1模架设计19 4.1.1模座的设计19 4.1.2模具支撑方式和导柱、导套的选择19 4.2定位装置设计20 4.2.1导正销定位20 4.2.2浮动导料销21 4.3卸料装置选择21 4.3压力机的选择22 4.3.1计算所有弯曲和冲裁压力机最小提供压力22 4.3.2选择压力机，并写出参数23 4.4模座之间的固定23 4.5顶料装置23 4.6斜楔滑块机构24 结论25 谢辞26 参考文献27