毕业设计：汽车纵梁定位板弯曲模具设计及其有限元分析.zip

毕业设计：汽车纵梁定位板弯曲模具设计及其有限元分析
论文说明书共48页，字数总计：24204
资料内容简介：
A0-装配图.dwg
A2-凹模图.dwg
A2-工件图.dwg
A2-凸模图.dwg
A2-下模座.dwg
A3-导套.dwg
A3-导柱.dwg
A3-垫板.dwg
A3-顶料块.dwg
A3-顶料橡皮.dwg
A3-上模座.dwg
A3-卸料板.dwg
A4-顶杆.dwg
A4-螺杆.dwg
A4-模柄.dwg
毕业设计开题报告.doc
毕业设计论文封面.doc
毕业设计论文说明书：汽车纵梁定位板弯曲模具设计及其有限元分析.doc
毕业设计任务书.doc
毕业设计综述报告.doc
目录.doc
中英文摘要和关键词页.doc

汽车纵梁定位板弯曲模具设计及有限元分析


摘要：分析了定位板零件的艺特点及零件的检验要求，设计了l副将弯挤两递工序合为一道的弯曲模，满足生产需要。
弯曲工艺的基本运动是卸料板先与板料接触并压死，凸模下降至与板料接触，并继续下降进入凹模，凸、凹模及板料产生相对运动，导致板料变形折弯，然后凸、凹模分开，弯曲凹模上的顶杆（或滑块）把弯曲边推出，完成弯曲运动。卸料板及顶杆的运动是非常关键的，为了满足弯曲的质量和生产效率，必须控制卸料板的运动，让它先于凸模与板料接触，并且压料力一定要足够，否则弯曲件尺寸精度差，平面度不良；其次，要保证顶杆力足够，可以让它顺利地把弯曲件推出，否则弯曲件变形，生产效率低。对于精度要求较高的弯曲件，应特别注意一点，最好在弯曲运动中，要有一个运动死点，即所有相关结构件能够碰死。
介绍了弯曲模设计时要留意的地方，且相对多的考虑了模具结构的调整性、易更换性及模具价格。从控制制件尺寸精度出发，对凸模的每个重要尺寸进行了理论计算，用来确定工作零件的尺寸，从模具设计到零部件的加工工艺和装配工艺等进行详细的阐述，并应用CAD软件进行各重要零件的设计。
最后结合有限元模拟技术和数据处理的线性回归技术，建立了高强度板形件回弹的预测模型，并用生产中的零件给预测模型以验证，证明预测模型可以有效的对回弹进行预测，结合预测模型给出了回弹控制的模具结构。

关键词：定位板； 弯曲； 弹复角； 凸模





Vehicle longitudinal beam position design and finite element analysis of plate bending mold


ABSTRACT:It analyzed the processing characteristics and checking request of orientation board. A bending die that combines bending and extruding process was designed according to the producing request.
Bending process is the stripper plate before the basic movement and the sheet metal contacts and crushed, reduced to the punch and the sheet metal contacts and to continue to fall into the matrix, convex and concave molds and sheet metal production relative motion, leading to deformation of folded sheet bend, then convex, concave mold to separate the mandrill bending matrix (or slider) to launch bending side to complete the bending movement. Stripper plate and kicker pin movements is critical in order to ensure the quality or production efficiency curve, we must first control the discharge plate movement, it preceded the punch and the sheet metal contacts, and press material force must be sufficient otherwise the bending part dimensional accuracy is poor, poor flatness; Second, should ensure adequate plunger force in order to make it a smooth introduction of the curved pieces, or bending pieces of deformation, low production efficiency. For high precision bending parts, special attention should be that the best bending movement, a movement to have dead spots that can touch all the relevant structural parts dead.
The critical points of mold for bending design are introduced, and the adjustable character of molding structure、exchange character as well as the molding costs are all considered farther. Starting from controlling dimensional accuracy, the carry the cover to the main dimensions of punch are carried out so as to determine the size of different parts, the molding design and the process of parts as well as assembling process and etc of bending molding are stated in details.
Fainly,established the spring back prediction model about the high strength steel shape by using finite element simulation technology and the data processing linear return technology．And confirmed prediction model with the production components．The results proves the prediction model may be effective forecast the tendency of Spring back,and the control method of spring back has been introduced combine with prediction model．

Key words: orientation board，bend，spring—back angle，punch



目 录


摘要 …………………………………………………………………………… i
前言 …………………………………………………………………………… 1
1 冲裁工艺分析 ……………………………………………………………… 5
1.1 冷冲压模具设计的目的 ……………………………………………… 5
1.2 分析冲压件的工艺性能 ……………………………………………… 5
1.3 确定冲压件工艺方案………………………………………………… 6
2 冷冲压模具设计步骤 ………………………………………………… 10
2.1 确定毛坯形状，尺寸和下料方式…………………………………… 10
2.2 弯曲过程分析 ……………………………………………………… 10
2.3 弯曲件的回弹和弯曲时的偏移 …………………………………… 11
2.4 弯曲..