摘要根据给定的具体零件图的尺寸和公差要求，并结合生产实际中的使用条件，设计了矩形盒落料拉深复合模以及切边模两套模具。包括：冲裁工艺设计，复合模结构、形式的设计及主要工作部件设计等。涉及模具方案的确定，材料的利用率，压力机的选择，模具正常工作时的情况，模具相应零部件的选取和制造。完成了拉深力、冲裁力、切边力、卸料、定位零件、顶出装置等的计算，然后对主要零部件的设计和标准件进行选择。通过这次设计使我巩固了所学的专业理论知识,进一步掌握注射模具设计和成型零件加工工艺制定的方法,提升了测量、绘图、查阅资料、文献翻译、应用专业软件等方面的能力,培养和造就了我的创新能力、工程意识、严谨的科学态度、逻辑思维方式、求实的工作作风和正确的科学研究方法。最后，阐述了对异形凸、凹模的加工过程。49617

毕业论文关键词：矩形盒；复合模；切边模 

Abstract This passage has designed rectangular box deep drawing dropping material composite modulus and trimming mode, according to the require of given concrete part drawing’s size and tolerance, combining the using condition of reality while producing. Including blanking process design, compound mould structure and forms of design, major work parts design. Involving the scheme determination of mould, material utilization, press choice, and the normal working condition of mold, Die parts selection and manufacturing .Completed the calculation of the deep drawing force, cutting force, trimming force, unloading, positioning parts, ejection device etc. Then choosing the main parts and standard parts. Through this design makes me the consolidation of the professional theoretical knowledge to master the injection mold design and molding parts processing methods developed to improve the surveying, mapping, access to information, literature translation, professional software applications such as the ability to cultivate and bring up my creative ability, engineering sense, the rigorous scientific attitude, logical thinking, realistic working style and the correct scientific method. Finally, expounds the special shaped convex, concave die on the process.

Key words: Rectangular box；Composite modulus；Trimming mode

 目 录

第一章  绪    论 1

1.1 选题的目的和意义 1

1.2 我国冷冲压模具现状及前景 1

第二章 工艺的分析 3

第三章 主要工艺设计及计算 4

3.1 拉伸工艺设计及其计算 4

3.1.1盒形件的修边余量 4

3.1.2 拉深次数的确定 4

3.1.3 盒形件拉深的展开尺寸计算 5

3.1.4 搭边及条料的宽度 7

3.15 落料凸、凹模尺寸计算 7

3.1.6 拉深凸、凹模圆角半径的确定 8

3.1.7 拉深力计算 10

3.2  落料、冲孔工艺设计及计算 10

3.2.1 材料利用率计算 10

3.2.2 冲裁力计算 11

3.2.3 卸料力、推件力和顶件力计算 11

3.2.4 冲裁凸凹模刃口尺寸计算 11

3.3  落料拉深模冲压力的计算