三维工件图
摘要
根据任务书的要求，本次设计的工件为支撑桶，初步分析该工件的结构，可以看出该工件为圆筒型的拉深件，并且不带有凸缘，属于无凸缘拉深件，在整个工件的内部和表面有冲孔和翻孔，所以我们可以分析出该工件所需要的工序有落料，拉深，冲孔以及翻孔四个工序。在下文的叙述中，我将会首先对工件的工艺性进行分析，然后对拉深件的毛坯尺寸进行展开尺寸的计算，利用展开的毛坯尺寸进行排样图计算，算出材料利用率，然后对模具的冲裁方案进行选择，选择使用复合模或者级进模或者单工序模具进行设计。因为本次设计工序有落料，拉深，冲孔，翻孔四个工序，所以模具所需的冲压力有落料冲孔工序的冲裁力和拉深翻边工序的成形力，求和即为整套模具的冲压力，然后根据这个冲压力选择合适的相匹配的压力机，并且进行校核，然后又对冲裁和拉深的刃口尺寸进行了计算后，设计出了其余零部件，最后进行了整理和绘制装配图。
本次设计的难点在于拉深模具的计算，拉深工件的计算比较复杂，在进行设计模具之前需要对拉深次数进行计算，如果工件能够一次拉深成型，那么最优的方案即为复合模，一套落料拉深冲孔翻孔复合模即可成形，如果一次拉深工序不能够成形工件，那么即需要两套模具。选用合适的模架形式也是影响工件成品质量的关键，常用的模架形式有中间导柱模架，后侧导柱模架以及对角导柱模架等等。
关键词：落料；拉深；冲压力；压力机；模架。
Stamping process analysis and die structure design of support barrel parts
Abstract: According to the requirements of the task specification,the designedworkpiece is a support barrel.After preliminaryanalysis of the structure of theworkpiece,it can be seen that theworkpiece is a cylindrical drawing partwithout flange,which belongs to a flangeless drawing part.There are punching and turning holes on the inner and surface of thewholeworkpiece.Therefore,we can analyze that the required processes of theworkpiece include blanking,drawing,punching and turning holes Process.In the following description,Iwill first analyze the process of theworkpiece,then calculate the blank size of the drawing part,use the expanded blank size to calculate the layout,calculate the material utilization ratio,then select the blanking scheme of the die,choose to use the composite die or progressive die or single process Die for design.Because this design process has four processes: blanking,drawing,punching and turning over,the punching pressure required bythe die includes blanking and punching force and forming force of the deep drawing and flanging process.The sum is the punching pressure of thewhole die.Then select the appropriate matching press according to the punching pressure,check it,and then carryout the cutting edge size of blanking and dras After the calculation,the rest parts are designed,and finallythe assemblydrawing is arranged and drawn.
The difficultyof this design lies in the calculation of the drawing die.The calculation of the drawingworkpiece is relativelycomplex.Before the design of the die,it is necessaryto calculate the drawing times.If theworkpiece can be drawn once,the optimal scheme is the compound die.One set of blanking drawing compound die can be formed.If one drawing process can not form theworkpiece,then two sets of dies are needed.The selection of suitable mold base is also the keyto the qualityof finished products.The commonlyused mold base forms are the middle guide pillar mold base,the back guide pillar mold base and the diagonal guide pillar mold base.
Keywords:Blanking; drawing; punching pressure; press; mold base.
目录
1绪论-1-
1.1研究的目的和意义-1-
1.2国内外研究发展状况-1-
1.3研究内容-2-
2支撑桶零件工艺性分析及工艺方案的确定-3-
2.1支撑桶零件工艺性分析-3-
2.2零件材料特性-4-
2.2.1特性-4-
2.2.2处理工艺-4-
2.3确定冲裁工艺方案-4-
3支撑桶冲压模具设计-6-
3.1计算毛坯尺寸-6-
3.1.1零件的修边余量-6-
3.1.2翻孔尺寸计算-6-
3.1.3计算毛坯尺寸-7-
3.2计算拉深次数-7-
3.3排样设计-8-
3.3.1搭边及其作用-9-
3.3.2搭边值的确定-9-
3.3.3步距-11-
3.3.4计算材料利用率-12-
3.4冲压力计算与压力机的选择-13-
3.4.1冲孔力的计算-13-
3.4.2落料力的计算：-13-
3.4.3卸料力的计算-14-
3.4.4拉深力的计算-14-
3.4.5模具总工艺力的计算-14-
3.5压力中心计算-14-
3.5.1压力中心的确定-15-
3.6校核冲压设备基本参数与选择-15-
3.6.1模具闭合高度的校核-15-
3.6.2冲裁所需总压力校核-16-
3.7冲裁间隙的确定-16-
3.8计算凸凹模冲裁刃口尺寸-17-
3.9拉深凸、凹模工作部分尺寸的确定-18-
4模具的零部件设计与选用-19-
4.1模具零部件结构的确定-19-
4.1.1冲孔凸模结构的设计-19-
4.1.2凹模结构的设计-20-
4.1.3凸凹模的的结构设计-21-
4.1.4卸料装置-23-
4.1.5模架和模座的选择-24-
4.1.6垫板及间隔板的设计-26-
4.1.7固定板的设计-27-
4.1.8螺钉的选用-27-
4.2.标准件的选用-28-
4.3模具整合-28-
结论-30-
参考文献-31-
致谢-32-
三维装配图
工件图
A0拉深模装配图
A1凹模
A1间隔板
A1上模板
A1下模板
A2凸凹模固定板
A2卸料板
A3冲孔翻边凸凹模
A3冲孔凸模
A3拉深翻边凸凹模
A3落料拉深凸凹模
工艺卡
目录
设计所包含文件
摘要
设计方案
