机械5

落料冲孔倒装复合模的设计 THE MOLD DESIGN OF THE BLANKING AND BACK-UP COMPOSITE DIE 摘要 本文设计了落料冲孔倒装复合模，这属于冲压工艺的模具设计的一种。通过对工件结构的分析，确定落料和冲压工序的先后。随后在设计了三种设计方案，在经过对比的情况下，选择了落料冲孔倒装复合模。在确定了模具的设计方案之后，经过分析，确定模具的各个装置结构。在选用了合适的排样方法后，通过计算，算出模具的压力中心与凸凹模的刃口尺寸。利用计算的数值来选用适当的压力机及相应的模架，以及选用合适的装配方案。 关键词落料冲孔；倒装；模具 Abstract I
n this paper, the composite die of bla
nki
ng pu
nch is desig
ned, which belo
ngs to the die desig
n of the stampi
ng process. We ca
n determi
ne the seque
nce of bla
nki
ng a
nd drawi
ng operatio
n by a
nalyzi
ng the structure of the work piece. Three desig
n schemes were desig
ned, a
nd i
n the case of compariso
n, the composite die was selected. After the desig
n of the mold was determi
ned, the structure of each device was determi
ned after a
nalysis. After selecti
ng the suitable layout method, the cutti
ng edge size of the pressure ce
nter a
nd the co
ncave die is calculated. Usi
ng the calculated value to choose the appropriate press a
nd correspo
ndi
ng die frame, a
nd choose the appropriate assembly pla
n. Key words bla
nki
ng pu
nchi
ng i
nversio
n mould 目录 摘要I Abstract II 1绪论1 2冲压的工艺性分析和模具的结构类型3 2.1工艺性分析3 2.2设计方案的选取3 2.3冲压模具的结构类型选择4 3模具的选择5 3.1模具的结构类型5 3.2模具的定位装置5 3.3模具的推出件装置5 3.4模具的卸出料装置6 4模具的设计与计算7 4.1排样的设计7 4.1.1排样要求7 4.1.2排样方法7 4.1.3原料的使用效率计算8 4.2计算冲裁压力、压力中心和选用压力机10 4.2.1冲裁力与卸料力的计算10 4.2.2冲压模具的压力中心的选取与计算11 4.3冲压工艺的计算12 4.3.1冲压部分的计算12 4.3.2落料部分的计算13 4.4各个重要零部件的结构大小15 4.4.1凹模的外部形状的确定15 4.4.2剩余零部件的尺寸16 4.5闭合高度的计算16 5模具的结构17 5.1模具零部件的加工17 5.2模架与冲床的选用18 5.2.1模架的选则18 5.2.3冲床的选用18 5.3模具的装配20 5.3.1常见装模工具及其作用20 5.3.2模具的装配过程20 5.4模具的调试23 5.5压力机的安全技术措施23 结论25 致谢26 参考文献27