Mold design and forming process of the workpiece in the forming pipe joint
Abstract: This design is a forming pipe joint of the workpiece mold design, but also contains the forming process. The main contents include the stamping parts of the process analysis, including parts of the shape, size, size of the accuracy of the analysis. The selection and sorting of punching process, the selection of composite die, blanking and drawing after the first hole punching. Determine the blank according to the blanking process calculation of the expansion size, layout, design and calculation of the material utilization. Calculation of blanking force, drawing force, blank holder force, punching force, turning force and so on to determine the total punching force, according to the total punching force of the press, calculation and determination of the pressure center of the press. According to the calculated punch edge blanking and punching the punch with the mouth. With the necessary design and calculation of the early completion of the final calculation of blanking drawing die and punch through the overall structure of the mold design, with 2D assembly drawings. According to the overall structure of the mold selection of standard parts, the design of non-standard parts of the structure and the two-dimensional drawings. Determine the processing methods of some non-standard mold parts. General assembly of mold structure design.

Key words: Composite mold design；blanking drawing die,；punching flanging die

1 冲裁件的工艺性分析  9
1.1 冲裁件的结构工艺性 10
1.1.1 冲裁件的形状 10
1.1.2 冲裁件的尺寸精度 10
1.1.3 材料的性能 10
2 制件冲压工艺方案的确定 11
2.1 冲压工序的组合    11
2.2 冲压顺序的安排11
3 制件排样图的设计及材料利用率的计算 12
3.1 展开尺寸的计算      12
3.2 制件排样图的设计14
3.2.1 搭边与料宽 15
3.3 材料利用率的计算15
4 确定总冲压力和选用压力机及计算压力中心 17
4.1 落料拉深模计算  17
4.1.1 落料力计算17
4.1.2 拉深力计算17
4.1.3 压边力计算18
4.2 冲孔翻孔模计算    18
4.2.1 冲孔力计算    18
4.2.2 翻孔力的计算    18
4.3 压力中心的计算19
4.4 压力机的选用    20
4.5 压力机的校核20
5 凸、凹模刃口尺寸计算22
5.1 落料,冲孔凸、凹模刃口尺寸22
5.1.1 计算原则22
5.1.2 凸模和凹模配合加工23
5.2 拉伸模24
5.3 翻孔模尺寸计算方法25
6 模具整体结构形式设计26
6.1 落料拉伸模结构形式26
6.2 翻孔模的结构形式27
6.3 标准件的选择28